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TrueGrid ® Output Manual for LS-DYNA

1. 101 example a cake ote pets 29 SPH us Bee ees Crag a Fea 26 ESS ee n vts ee chat ethane 18 Lsyna example subia nd xk deat 29 VSS a Oh Sit O Bees GN 12 Make BB ot BU hae hd 18 Waster side ia eae aa ees 19 Witenes uae ete E 12 23 24 Material coordinate system 23 PUED 3 A ET A 18 NO 12 20 O enh aes Set ees a a tale een Gk te 84 Merge dummy interface 138 TOSS 24d das deis do 17 rigid bodies 25 Merged nodes ir ana rte Pace 18 25 26 Mesh density up a 18 mlabs labels ao 16 A Aes neha a anaes 18 Moms crea de aati ease 13 20 22 MOMENT 2s ured 3 tick se T dares 4 Bed 22 Moments cue sis e 20 22 Momentum eins a gt Sega ee nananana 20 Momi s ia adele ed XR RAE 13 20 DGS icy O ace A a Said 6 25 Wick estas deere ohare tena annie Moles 12 23 24 Maanosa abc as 12 23 24 Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 147 O 23 shell orientation 5 NU ane eras Le Serene A Gjat 13 20 22 Ndl rra a dada ARA 20 RODA TOS O A aides 22 nodal load o o ooo 20 21 Node merging sliding interface 132 A A A ae as 26 Node S t uri 25 Node sets A E a 18 NOLES E O A RA 64 METGE bo Secon Pawnee eae Seed 17 tied 2d aaa ny Gis 26 Non reflecting bi ed sue he 19 Normal vector o ooo oooooooo 23 IN OD no Aout Roa ta god eo a 11 27 NPIN es DI A IA 12
2. MAT_DAMPER_NONLINEAR_VISCOUS Isdymats MAT_DAMPER_VISCOUS Isdymats MAT_ELASTIC Isdymats MAT_ELASTIC_FLUID Isdymats MAT_ELASTIC_PLASTIC_HYDRO Isdymats MAT_ELASTIC_PLASTIC_HYDRO_SPALL Isdymats MAT_ELASTIC_PLASTIC_THERMAL Isdymats MAT_ELASTIC_WITH_VISCOSITY Isdymats MAT_ENHANCED_COMPOSITE_DAMAGE Isdymats MAT_FABRIC Isdymats MAT_FLD_TRANSVERSELY_ANISOTROPIC Isdymats MAT_FORCE_LIMITED Isdymats MAT_FRAZER_NASH_RUBBER_MODEL Isdymats MAT_FU_CHANG_FOAM Isdymats MAT_GENERAL_VISCOELASTIC Isdymats MAT_GEOLOGIC_CAP_MODEL Isdymats MAT_HIGH_EXPLOSIVE_BURN Isdymats MAT_HONEYCOMB Isdymats MAT_HYDRAULIC_GAS_DAMPER_DISCRETE_BEAM Isdymats MAT_HYPERELASTIC_RUBBER Isdymats MAT_HYSTERETIC_SOIL Isdymats MAT_ISOTROPIC_ELASTIC_FAILURE Isdymats MAT_ISOTROPIC_ELASTIC_PLASTIC Isdymats MAT_JOHNSON_COOK Isdymats MAT_KELVIN MAXWELL_VISCOELASTIC Isdymats MAT_LAMINATED_GLASS Isdymats MAT_LINEAR_ELASTIC_DISCRETE_BEAM Isdymats MAT_LOW_DENSITY_FOAM Isdymats MAT_LOW_DENSITY_VISCOUS_FOAM Isdymats MAT_MODIFIED_ HONEY COMP Isdymats MAT_MODIFIED_ZERILLL ARMSTRONG Isdymats MAT_MOONEY RIVLIN_RUBBER Isdymats MAT_MTS Isdymats MAT_NONLINEAR_ELASTIC_DISCRETE_BEAM Isdymats MAT_NONLINEAR_ORTHOTROPIC Isdymats MAT_NONLINEAR_PLASTIC_DISCRETE_BEAM Isdymats MAT_NULL Isdymats MAT_OGDEN_RUBBER Isdymats MAT_ ORIENTED CRACK Isdymats MAT_ORTHOTROPIC_ELASTIC Isdymats MAT_ORTHOTROPIC_THERMAL Isdymats Copyright O 2007 by XYZ Scientific Application
3. For material type 21 Thermal Orthotropic w 12 Constants ea a elastic_modulus eb b elastic_modulus ec c elastic_modulus prba ba poisson s_ratio prea ca poisson s_ratio preb cb poisson s_ratio alpa a thermal_expansion alpb b thermal_expansion alpe c thermal_expansion gab ab shear_modulus gbc bc shear_modulus gca ca shear_modulus aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 for by cross product with shell normal shell elements only 4 for by normal vectors in cylindrical coordinates xp x coordinate aopt yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA VX x component aopt 3 amp 4 vy y component aopt 3 amp 4 YZ z component aopt 3 amp 4 p1 x component aopt 4 p2 y component aopt 4 p3 z component aopt 4 For material type 22 Fiber Composite w Damage ea ea elastic_modulus eb eb elastic_modulus ec ec elastic_modulus prba vba poissons_ratio prea vca poissons_ratio preb vcb poissons_ratio gab gab shear_modulus gbc gbc shear_modulus gca gca shear_modulus k k bulk_modulus aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal
4. Output Manual i E For LS DYNA gt AT A Guide and a Reference Version 2 3 0 Robert Rainsberger and Mike Burger XYZ Scientific Applications Inc Copyright O 2007 by XYZ Scientific Applications Inc All rights reserved TrueGrid the TrueGrid Output Manual for LS DYNA and related products of XYZ Scientific Applications Inc are copyrighted and distributed under license agreements Under copyright laws they may not be copied in whole or in part without prior written approval from XYZ Scientific Applications Inc The license agreements further restrict use and redistribution XYZ Scientific Applications Inc makes no warranty regarding its products or their use and reserves the right to change its products without notice This manual is for informational purposes only and does not represent a commitment by XYZ Scientific Applications Inc XYZ Scientific Applications Inc accepts no responsibility or liability for any errors or inaccuracies in this document or any of its products TrueGrid is a registered trademark of XYZ Scientific Applications Inc Some other product names appearing in this book may also be trademarks or registered trademarks of their trademark holders Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 2 May 15 2007 TrueGrid Output Manual For LS DYNA Table of Contents Table of Contents oei siure ER is VE AI E IS Eee eae 3 I LS DYNA Output Guide soci A A A A
5. All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 r3 coefficient r4 coefficient r5 coefficient all coefficient al2 coefficient al3 coefficient al4 coefficient al5 coefficient bli coefficient bD coefficient bB coefficient bl4 coefficient bl5 coefficient rll coefficient rl2 coefficient rl3 coefficient rl4 coefficient rl5 coefficient c0 coefficient omega coefficient e0 coefficient v0 coefficient Isdymats LS DYNA materials Isdymats material_ material_type parameter_list where material_ is the positive integer used to identify the material model and where material_type can be any of the numbers associated with the models described below Check the LS DYNA manual or use the dialogue boxes in TrueGrid to avoid mismatches in options The following options can form part of the parameter_list and are available for all materials rho density hgqt type Hourglass Stabilization Method where type can be 1 standard 2 Flanagan Belytschko integration 3 Flanagan Belytschko integration with exact volume 4 stiffness form of type 2 Flanagan Belytschko 5 stiffness form of type 3 Flanagan Belytschko Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 48 May 15 2007 TrueGrid Output Manual For LS DYNA hgq coefficient hourglass coefficient bat type bulk viscosity type bqq coefficient quadratic viscosity coefficient bql coefficient linear viscosity coefficient migl option where the gr
6. All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 23 You may need to specify the through thickness integration points when defining a composite material This can be done by defining an integration rule with the sind command Then identify this rule in the material definition Thick Shells Thick shells are generated and look like hexahedral elements Only a few materials support thick shells Be sure to use the mate mt or mti command to assign the proper material to each section of the mesh The element local coordinate system used in an orthotropic or anisotropic material is imposed by the order of the nodes that define the element You can flip the nodal ordering to switch the orientation of this local coordinate system using the or command in the part phase You may need to specify the through thickness integration points when defining a composite material This can be done by defining an integration rule with the sind command Then identify this rule in the material definition All other cross section information is specified in the material definition Beams Two nodes are required to form a beam element In many cases a third node is needed to define the local coordinate system used to form the cross sectional properties These element are sometimes referred to as structural elements Use the ibm ibmi jbm jbmi kbm and kbmi commands to form beam elements with shell or brick structures while in the part phase
7. CONGINION ra dea ee 16 Constraint rotational iia ios 19 Constraints oooooooo ooo o 19 25 Contact Surface 5 18 26 133 PACES as ahs Ro urea 18 BAD si coos pew ee eee eae SY 18 graphics gt ETRE todas 18 initial penetration 18 merged nodes curras sw 18 mesh density 18 orientation ooooooo o 18 replication 2 ea 18 AS ASA 18 PADIS id 18 DE da 18 Contact surfaces rita todas 132 SI A pur Pete ae ata 133 convection oooooooooo oo 21 22 Cross section oo o 23 24 27 Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 145 cr shed Mita td AE 47 RS aur hehe 6 2422 MA E A eeee 6 21 Caldera 5 16 SPH A Sere a EEE 26 A E Taa Se eats 57 67 GT A ge Rte Re Bre aS PR ee 88 93 DAPR y 25 data A A NEO UR 91 DADAS AS eae ee 27 Database stats ais 27 A h 9 a eee 64 GISTs A E SN 37 delete LN tia Mate lena Gees latins 26 delset cA ates A aher Leta iat 26 a td tt ge ANA ahead aot AA ates AN lata 12 Dialogue box SIG 2 65 Ta N ee 138 Displacement sia sen aks 21 22 QS iid eer dd EA 6 13 22 Distributed loads 20 22 OUND oe racer arg tet Cetera EA 13 Dummy interface usaras 19 138 dyman orust anisar ald e 13 16 e 54 56 58 60 61 67 69 71 74 77 78 81 83 84 87 88 93 96 97 a a a bai 88 92 93 Paire aa eh ag than a 26 Failure nodes Hed
8. Shear Stress Tau4 Shear Stress Tau5 Load Curve Defining Shear Strain versus Shear Stress Scale Factor to Apply to Shear Stress in LCID For material type 80 Ramberg Osgood Plasticity Reference Shear Strain Reference Shear Stress Stress Coefficient a coefficient Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 92 May 15 2007 TrueGrid Output Manual For LS DYNA r exponent Stress Exponent k elastic_modulus Elastic Bulk Modulus For material type 81 Plastic with Damage e young s_modulus Young s Modulus cc parameter Strain Rate Parameter C p parameter Strain Rate Parameter p pr poisson s_ratio Poisson s Ratio sigy yield_stress Yield Stress eppf strain Plastic Strain at Failure tdel time_step Automatic Element Deletion Time Step lesr load_curve Load Curve to Scale Yield Stress eppfr strain Plastic Strain at Rupture vp ledm load_curve numint num_fail Effective Stress Effective Plastic Strain by Load Curve less load_curve Effective Stress Effective Plastic Strain Load Curve etan tangent_modulus Tangent Modulus by Strain amp Stress Values up to 8 values eps list_of_effective_plastic_strains Effective Plastic Strain Values es list_of_effective_plastic_stress Yield Stress Values For material type 83 Fu Chang s Foam with Rate Effects e young s_modulus Young s Modulus for Tensile Strains ed coefficient Stiffness Coefficient for Contact Interface Stiffness te stress Tension Cut off Stress
9. The coordinates s coordinates of integration points from interval lt 1 1 gt Denoted by crosses The weights w are determined from the term w A A where A is the area corresponding to the i th integration node 4 is the total area of the cross section determined by A YA The and s dimensions are used for scaling from parametric to real coordinates The and s dimensions are specified using the bsd bm ibm ibmi jbm jbmi kbm kbmi or the Isdymats commands and are parametric 1 Figure 3 Cross Section with Integration Points bm create a string of beam elements bm options where option can be Selection of the first node nl node_ to make an existing node the first node of the beams pml point_mass_ to make a point mass node the first node of the beams rtl x y z const to create the first node of the beams in Cartesian coordinates cyl p Oz const to create the first node of the beams in cylindrical coordinates spl p O gconst to create the first node of the beams in spherical coordinates Selection of the second node n2 node_ to make an existing node the last node of the beams pm2 point_mass_ to make a point mass the last node of the beams rt2 xyz const to create the last node of the beams in Cartesian coordinates cy2 p Oz const to create the last node of the beams in cylindrical coordinates Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 34 May 1
10. bsd global beam cross section definition 38 ibm generate beams in the i direction part phase 41 Isdyeos LS DYNA3D equation of state ooooo ooooooo 43 Isdymats LS DYNA materials sos Sade ada 48 Isdyna select LS DYNA output format 101 Isdyopts LS DYNA analysis and database options 101 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 Isdythmt offset si si sii sid sind spd spdp spring spring spwd vd IV INDEX ooo LS DYNA thermal material properties 129 add offset to numbered entities in the output 131 assign sliding interface to region part phase 132 select nodes for the slave side merge phase 132 assign sliding interfaces part phase 133 sliding interface dennon annen 133 shell user defined integration rules 138 define the properties of a set of springs or dampers 138 assigns a face to be half of a set of spring damper pairs 140 create modify a spring part phase 141 create modify a numbered spring 142 spot weld property definitions 143 define a volume es is tue 144 Pee Tee PE OTE ee eRe eee eR Oe eon et ee rere 145 Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA
11. constrain spring about the y axis at the first node constrain spring about the z axis at the first node vertex of the part as the second node point mass as the second node increment the second point mass number when making part replications constrain spring in the x direction at the second node constrain spring in the y direction at the second node constrain spring in the z direction at the second node constrain spring about the x axis at the second node constrain spring about the y axis at the second node constrain spring about the z axis at the second node material properties increment the SPD number when making part replications scale factor for the material properties orientation option 0 for spring damper acts along the axis 1 for deflection rotations are measured and force moments applied along the following vector 2 for deflection rotations are measured and force moments applied along the projection of the spring damper onto the plane with the following normal prflg flag where flag can be print flag 0 for forces are printed in DEFORC file 1 for forces are not printed in DEFORC file ofsi offset initial offset Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 141 xco x component x component of the orientation vector yco y component y component of the orientation vector and or zco Z component z component of the orientation v
12. discharge coefficient stiffness coefficient if piston bottoms out orifice locations relative to fixed end no more than 16 radii corresponding to orifice locations fluid density coefficient for linear velocity term coefficient for quadratic velocity term force vs piston displacement damping coefficient vs piston displacement initial displacement typically 0 coefficient for fluid inertia term For material type 70 Hydraulic Gas Damper Model c0 c0 length of gas column Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA cnn adiabatic constant pU po initial gas pressure pa pa atmospheric pressure ap ap piston cross sectional area kh kh hydraulic constant Idn oad_curve orifice area vs element deflection fr fr return factor on orifice force self sclf scale factor on force clr clearance For material type 71 Cable Model e young s_modulus Idn Joad_curve stress vs strain For material type 72 Concrete Damage Model0 pr pr Constant Poission s Ratio Model sigf failure Maximum Principal Stress Failure a0 cohesion Cohesion al coefficient Fiirst Pressure Hardening Coefficient a2 coefficient Second Pressure Hardening Coefficient b1 factor Damage Scaling Factor alf coefficient Pressure Hardening Coefficient for Failed Material per percent Percent Reinforcement er elastic modulus Elastic Modulus for Reinforcement prr poisson s ratio Po
13. repeated Each command is described by an entry like the following command summary description command arguments brief description of functionality with brief descriptions of what the arguments should be indentation is used to indicate a list of options to the arguments Remarks When present the Remarks section describes the command in even greater detail It may describe the context in which the command is normally used and other commands used in association with this command It may describe side effects It may describe other similar commands In many cases it includes a description of where to find the command in the menus Example When present this shows the exact use of the command If you use the dialogues this command will be generated by simple selection options with the mouse and entering data where indicated The command as shown here will appear in the session file for later reuse and possible modification You can also enter the command into the text window or insert it into a command file to be run in batch mode Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 33 bind Hughes Liu beam user defined integration points bind rule Zs t Wi S3 t W3 83 b3 W3 where rule_ can be any positive integer used to refer to this rule followed by a list of local coordinates of integration points s and t and corresponding weights w Remarks
14. Boundary Convection vevi Variable Boundary Convection fl Boundary Flux fli Boundary Flux vfl Variable Boundary Flux vfli Variable Boundary Flux ft Boundary Temperature fti Boundary Temperature vft Variable Boundary w Functional Temperature vfti Variable Boundary w Functional Temperature vhg Volumetric Heat Generation vhgi Volumetric Heat Generation vvhg Variable Volumetric Heat Generation Il Linearly Interpolate Loads by Arc Length Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 21 The list of commands that can be used to assign loads in the merge phase includes fe Cartesian concentrated nodal loads mom nodal moment about one of the nodal axis in the global coordinate system ndl pressure converted to distributed nodal loads pr pressure loads on element faces pramp pressure loads on element faces fv Cartesian prescribed nodal velocities fvv Cartesian variable prescribed nodal velocities vace Cartesian variable prescribed nodal acceleration fd Cartesian displacement frb prescribed rotation ffe concentrated nodal load with a follower force fmom nodal moment with a follower force cv Boundary Convection on a Face Set ft Boundary Temperature by Load Curve vvhg Variable Volumetric Heat Generation ffe Follower Nodal Force by Load Curve fmom Follower Nodal Moment about an Axis The pramp command is used with either pr or pri It applies a pre
15. Discrete 3D Beam vold volume cabarea cable_area lump inertia lumped geometric inertia cableid ocal_coordinate_system_ defined by the Isys command caboff cable_offset Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 40 May 15 2007 TrueGrid Output Manual For LS DYNA Spot Weld Beam Standart Sections Isd 1 flange_width flange_thickness depth web_thickness W section Isd 2 flange_width flange_thickness depth web_thickness C section lsd 3 flange_width flange_thickness depth web_thickness angle lsd 4 flange_width flange_thickness depth web_thickness T section lsd 5 flange_width flange_thickness depth web_thickness rectangular lsd 6 flange_width flange_thickness depth web_thickness Z section Isd 7 flange_width depth web_thickness trapezoidal Spot Weld Beam Constant Thickness sthi thickness s thickness at both ends tthi thickness t thickness at both ends Spot Weld Beam Variable Thicknesses sthil thickness s thickness at beginning sthi2 thickness s thickness at ending tthil thickness t thickness at beginning tthi2 thickness t thickness at ending ibm generate beams in the i direction part phase ibm region _in_j _in_k material orientation cross_section option where _in_j is the number of columns of beam elements in the j direction _in_k is the number of columns of beam elements in the k direction material is the material number orientation is the option of orientation of the cross section axis j second a
16. E xX a mba 97 Hs 2 SS S35 Mit Ose len L see TN aes Ts ee se A De mate 201 endpart merge bptol 1 2 0 bptol 2 3 0 bptol 3 4 0 bptol 1 1 0 bptol 2 2 0 bptol 3 3 0 bptol 4 4 0 stp 001 write Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 31 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 32 May 15 2007 TrueGrid Output Manual For LS DYNA TI LS DYNA Reference The commands found here are provided to the user so that a complete input file can be generated by TrueGrid This manual does not try to explain the meaning of the associated parameters For this the user is referred to the LS DYNA User Manual Some ofthese commands have additional options not shown here because they do not apply to the formation of a LS DYNA output For a full description of these commands see the TrueGrid User s Manual Most of the commands used to form a complete input input file for LS DYNA are only documented in the TrueGrid User s Manual because they do not require special explanations for their use with LS DYNA Conventions When an arbitrarily long list of arguments are required a semi colon terminates the list Sometimes the abbreviation _things is used to mean number of things and thing_ for a numbered thing The square brackets are used to indicate that something inside the square brackets can be
17. If the material of the shell or brick structure is set to zero using the mt mti or mate command then the shells or bricks will be ignored but the embedded beams will not be ignored This is a convenient way to build an array of beams using block structured methods You can also use the bm command in the merge phase to build a string of beams that can be made to follow a 3D curve The beam command this command has been denigrated can also be used to form beam elements but the command is not interactive Both the element type and the default cross section properties are defined in the material definition You can also use the bsd command to define cross sectional properties to over ride the material default cross sectional properties When you create a beam refer to the bsd number to assign these cross sectional properties to the beam Use the bind command to define beam integration rule if needed Then refer to this integration rule when defining the material Joints and Rigid Bodies A rigid body is formed using shells and bricks that are assigned the rigid body material Each rigid body can be attached to other parts of the model using joints A joint is defined in two steps The jd command is used to define the properties of a joint Then the jt command is used to identify which A Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 24 May 15 2007 TrueGrid Output Manual For LS DYNA nodes are used to form the joint N
18. JWL coefficient xpl coef product JWL coefficient xp2 coef product JWL coefficient frer volume unreacted c0 volume Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 46 May 15 2007 TrueGrid Output Manual For LS DYNA g product rl coef r2 coef r3 coef r5 coef r6 coef fmxig fraction freq pressure growl coef em exponent arl exponent esl exponent cyp capacity cyr capacity ccrit volume enq heat tmp0 temp grow2 coef ar2 exponent es2 exponent en exponent fmxgr max fmngr min product wcv unreacted JWL coefficient unreacted JWL coefficient unreacted wcv unreacted JWL coefficient unreacted JWL coefficient initial fraction reacted f0 initial pressure pO first burn rate coefficient pressure exponent Ist term exponent on F 1st term exponent on 1 F 1st term heat capacity products heat capacity unreacted product co volume heat of reaction initial temperature 298 k second burn rate coefficient exponent on F 2nd term exponent on 1 F 2nd term pressure exponent 2nd term maximum F for 1st term minimum F for 2nd term For pore collapse model type 11 mul compression mu2 intersection e0 energy mul compression virgin load_curve_pairs crushed oad_curve_pairs levir load_curve_ Iecru oad_curve_ For JWLB model type 13 al coefficient a2 coefficient a3 coefficient a4 coefficient a5 coefficient rl coefficient r2 coefficient Copyright 2007 by XYZ Scientific Applications Inc
19. LS DYNA For material type 4 Thermo Elastic Plastic temp temperature_list e young s_modulus_list pr poisson s_ratio_list alpha secant_coefficient_list sigy vield_stress_list etan plastic_hardening_modulus_list For material type 5 Soil and Crushable Foam g shear_modulus ku bulk_unloading_modulus a0 yield_function_constant al yield_function_constant a2 yield_function_constant pe pressure_cutoff ver volumetric_crushing_option where the volumetric crushing option can be 0 for on 1 for loading and unloading paths are the same vs volumetric_strain_list ps pressure_list For material type 6 Linear Viscoelastic k bulk_modulus g0 short_time_shear_modulus gi long_time_shear_modulus beta decay_constant For material type 7 Blatz Ko Rubber g shear_modulus For material type 8 High Explosive Burn d detonation_velocity pej chapman jouget_pressure beta option where the option can be 0 for beta programmed burn 1 for beta burn only 2 for programmed burn only k bulk_modulus g shear_modulus sigy vield_stress Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 For material type 9 Null Hydrodynamic w o Deviatoric Stress pe pressure_cutoff mu viscosity_coefficient rvt relative_volume rve relative_volume e young s_modulus pr poisson s_ratio For material type 10 Isotropic Elastoplastic Hydrodynamic g shear_modulus sigy v
20. Lui for Belytschko Leviathan Englemann Whirley for Belytschko Leviathan Englemann Whirley for fully integrated Belytschko Tsay membrane for Belytschko Wong Chaing for co rotational Hughes Lui Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA fast for fully integrated shell very fast psts for plane stress xy plane pstn for plane strain xy plane assa for axisymmetric solid area weighted assv for axisymmetric solid volume weighted fidk for fully integrated dk quad tri fc0 for fully integrated c0 shell fc05 for fully integrated c0 shell 5 dof Isp3 for linear shear panel element btth for Belytschko Tsay with stretch teth for fully integrated shell with stretch ens for 1 point Eulerian Navier Stokes ens8 for 8 point Eulerian Navier Stokes mfsf for mesh free strain formulation mfas for mesh free axisymmetric solid form sle for simplified linear shell shear factor tsti _points propt option where option can be 1 for average resultants amp fiber lengths 2 for resultants at plan points amp fiber lengths 3 for resultants stresses at all points amp fiber lengths userrl integration_rule_ from sind command quad integration_rule_ where the integration_rule_ can be n positive for the number of points using the trapezoidal rule 0 for Gauss n negative number for the user specified rule see sind shth thickness shth1 thickness shth2 thickne
21. arbitrary force deflection curve one way treatment for Single edge treatment for shell surface edge to edge treatment for Simulated draw bead for Automatic surface to surface tiebreak for Automatic one way surface to surface tiebreak for Automatic general for Automatic general interior for Force transducer constraint for Force transducer penalty for Forming node to surface for Forming one way surface to surface for Forming surface to surface for Discrete nodes impacting surface w interference for One way treatment of sliding impact friction w interference for Spotweld for Spotweld with torsion for Sliding impact friction w interference for Tiebreak nodes only for Tied with failure Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA rebar for rebar in concrete 1D sliding and an option can be lersgo oad_curve_ for optional load curve defining the resisting stress vs gap opening isrch flag small penetration in contact search where flag can be 0 for check is off 1 for check is on 2 for check is on shortest diagonal used visdam percent for viscous damping coefficient in percent of critical kpf flag kinematic partition factor for constraint where flag can be 0 for fully automatic treatment 1 for one way treatment with slave nodes constrained to master surface 1 for one way treatment with master nodes constrained to slave surface lca
22. can be written to the output file Y ou can construct a node set or a face set This will be written to the output file as a set Then it is a simple matter to add the keyword command to the output file using a text editor to transform that set into a contact surface or sliding interface This approach has the problem that nodes may be merged across the two sides because they are not defined as sliding interfaces When nodes are merged nodes across a sliding interface will not be merged When a merge command is first issued in the merge phase a table is written listing the number of nodes and faces associated with each sliding interface The dummy type interface is actually used to avoid merging of nodes A sliding interface of this type is not written to the output file The nodes and faces of a sliding interface or contact surface can be viewed in the merge phase using the si option of the co command If the output option has been selected prior to using the dialogue box to make a selection only the options available to that output option will be displayed in the dialogue box Example sid 13 lsdsi 9 lersgo 1 visdam 34 isrch 1 sind shell user defined integration rules sind rules t W S3 bs W3 S ty Wy where rule is the integration rule number 0 or 1 If 1 then all other arguments are ignored t w mM are local coordinate integration weight and material number spd define the properties of a set of springs or d
23. don t eliminate compressive stresses 1 for eliminate compressive stresses gab coefficient gbc coefficient gca coefficient esflg flag e young s_modulus Y oung s modulus for elastic liner pr poisson s_ratio Poisson s ratio for elastic liner rlf ratio ratio of liner thickness to total fabric thickness rla coef Rayleigh damping coefficient aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 by cross product with shell normal Shell elements only xp x coordinate aopt 1 yp y coordinate aopt 1 Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 72 May 15 2007 TrueGrid Output Manual For LS DYNA Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 vx x component aopt 3 vy y component aopt 3 YZ z component aopt 3 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 mangle angle beta list_of_material_angles aopt 3 fle fabric_leakage_coefficient fac fabric_area_coefficient ela effective_leakage_area Inre liner_compression_flag form membrane_formulation_flag fvopt option Ica Ic Icb Ic Icab lc Icua lc Icub lc Icuab c For material type 35 Kinematic Isotropic Elastic Plastic Green Naghdi Rate Model e young s_modulus sre c strain rate parameter c srp p strain rate parameter p pr poisson s_ratio sigy yield_stress etan hardening_modulus eb hardening_parameter For materi
24. ebc Isdyopts options q1 q2 ibq Isdyopts options itsflg epsdt dtsf adtmax Isdyopts options insol dtinit cfl ickdt iacurc Isdyopts options mimass iadvec ifct divu thetak thetaa thetaf msol maxit ichkit iwrt ihist eps ihg ehg Isdyopts options ipsol maxitr ichcit idiag ihst epsp nvec istab pbeta ssid plev pleid Isdyopts options itemp nspec imss ibaltd iaflx thetk thtaa thetf itsol mxiter ickint idiagn ichist epst ihgt ehgt Isdyopts options itrb smagc sn Isdyopts options icoarse fangl sn1 sn2 sn3 sn4 sn5 sn6 sn7 sn8 Isdyopts options slsfac rwpnal islchk shIthk penopt thkchg orien dkeep usrstr usrfre nsbcs interm xpene tfst itftss itfpsn dsfric ddfric dedc dvfc dth dthsf dpensf ignore frceng Isdyopts options unleng untime unforc timidl flipx flipy flipz sybcyl mrpc icsc usaco nsmcol Isdyopts options cputim Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 8 May 15 2007 TrueGrid Output Manual For LS DYNA CONTROL_DYNAMIC_RELAXATION CONTROL_ENERGY CONTROL_EXPLOSIVE_SHADOW CONTROL_HOURGLASS CONTROL_HOURGLASS_936 CONTROL_IMPLICIT_AUTO CONTROL_IMPLICIT_DYNAMICS CONTROL_IMPLICIT_EIGENVALUE CONTROL_IMPLICIT_GENERAL CONTROL_IMPLICIT_SOLUTION CONTROL_IMPLICIT_SOLVER CONTROL_IMPLICIT_STABILIZATION CONTROL_NONLOCAL CONTROL_OUTPUT CONTROL_PARALLEL CONTROL_REMESH
25. fail flag Failure Option After Cutoff Stress is Reached where flag can be 0 Tensile Stress remains in Cut off Value 1 Bulk Viscosity Active damp coefficient Viscous Coefficient tbid load_curve Stress Strain Strain Rate Table bvflag flag Bulk Viscosity Activation Flag where flag can be 0 No Bulk Viscosity Recommended 1 Bulk Viscosity Active d0 constant Material Constant d0 nU constant Material Constant n0 nl constant Material Constant n1 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 93 n2 constant n3 constant cU constant cl constant c2 constant c3 constant c4 constant c5 constant aij constant sij constant ratemin strain_rate ratemax strain_rate sflag flag rflag flag tflag flag pvid oad_curve sraf flag Material Constant n2 Material Constant n3 Material Constant c0 Material Constant cl Material Constant c2 Material Constant c3 Material Constant c4 Material Constant c5 Material Constant aij Material Constant sij Minimum Strain Rate Maximum Strain Rate For material type 86 Orthotropic Viscoelastic ea constant eb constant ec constant vf friction k bulk_modulus g0 shear_modulus ginf shear_modulus b decay_constant prba poisson s_ratio prca poisson s_ratio preb poisson s_ratio gab constant gbe constant gca constant aopt option Ea Eb Ec Volume Friction of Viscoelastic Material Elastic Bulk
26. for brick and thick shell nodes which are initially in contact damage is a linear function between points Icid1 load_curve load curve dynamic interface stiffness Icid2 load_curve load curve transient interface stiffness isym option_ symmetric plane option i2d3d option_ segment searching option sldthk thickness solid element thickness sldstf thickness solid element stiffness igap option_ flag implicit convergence behavior ignore option_ ignore initial penetration in automatic interfaces edge distance edge to edge penetration check rbrad radius rbstr strength rbshr modulus rbumax strain rbexp exponent Remarks Sliding interfaces or contact surfaces are constructed in 3 steps These steps can be done in any order 1 define the properties 2 select the slave side 3 select the master side if applicable The sid command is used to define the properties The si and sii commands are used in the part phase or the merge phase to select the nodes or faces that form the master and slave sides of the interface Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 137 The options for LS DYNA are large and unique so they have been singled out and fall under the Isdsi option of the sid command Some of these sliding interfaces require nodes on the slave side while others require only a set of faces on the slave side This definition is required so that the proper data
27. number_of_springback_steps istress flag 1 include initial stress 2 ignore initial stress enstn indicator_for_consistent_tangent_stiffness 0 do not use 1 use form element_formulation 0 type 16 1 type 6 nsolvr flag CONTROL_IMPLICIT_SOLUTION where flag can be 1 linear 2 nonlinear with BFGS updates default 3 nonlinear with Broyden updates 4 nonlinear with DFP updates 5 nonlinear with Davidon updates 6 nonlinear with BFGS updates arclength 7 nonlinear with Broyden updates arclength 8 nonlinear with DFP updates arclength 9 nonlinear with Davidon updates arclength Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 107 ilimit iteration_limit maxref stiffness_reformation_limit detoln displacement_convergence_tolerance ectoln energy_convergence_tolerance Istoln line_search_convergence_ tolerance dnorm flag 1 vs current time step 2 vs total diverg flag 1 reform stiffness 2 ignore divergence istif flag 1 reform stiffness at start of each step n reform at each n th step niprt flag 1 print to screen and files 2 print to files arcctl arc_length_control_node arcdir flag 1 global X translation 2 global Y translation 3 global Z translation arclen arc_length_size arcmth flag 1 Crisfield 2 Ramm arcdmp flag 2 off 1 on Isolvr flag CONTROL_IMPLICIT_SOLVER where flag can be 1 direct sparse incore default 3 direct sp
28. ot tt ck op eh ahs adh A oh 26 fast aa ri is td 60 PG E A 13 20 22 OGG ode ERT 13 20 POG A a Aada dade hele TRAE 4 13 20 O A A arn ast ee 13 20 CXAMIPIC as mene 29 POS E E Boeken 13 20 GRT a a ts 13 20 cade diia 6 21 22 A rad ai eae Ea 6 21 OCI cig gud Pag ces et E A 6 21 E C25 deca A Macca Raat Eet he 6 21 OG iy cht lets GON tad O Rit a 6 21 O ay arar 6 21 PIC NA Geers eee aa id 13 22 0 Sth tae O 6 21 22 Eled anaia IN 2 otter ee 12 22 A 6 21 22 FUK ee tnt aa n EE r 21 EMM a ii ta eae E 13 22 NS E NE 6 26 TT a Se hoe cee ntsc Sats acess Spgs 6 26 OM tos 73 83 Follower force ai oe 22 follower moment 22 TOMS 553 bho Asal N ad A 5 FID ak ce eek Matawan 6 19 21 22 A A taal tea ecu 19 21 PSG sad E es ade Gk tas 16 18 26 FSC EL a ee ae girs OS Meee eae 16 26 TE seas R ala ena ae a wee eta 621 22 A deg AER T 6 21 EVA A E R 6 20 22 A Sy ae ah ee Taa ee Le 6 20 A deco ET A a 6 20 E cats rr bt ata ido 6 20 PR A IE 6 20 ESA A AA ok ee eres 6 20 Pa did BE 6 21 22 Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 99 e a nes 54 64 66 68 72 81 94 ol A 54 64 66 68 72 73 81 94 E eM A 93 Element Serei RN E RRE O CIR 26 j 2 a E E thers Rundle hs 11 27 Erosion CONLACE iaa ace Aa ees 135 ESET i etter K AO E Bina 16 26 OSO ute ach E al as aa al 16 26 CUM sels clan ace A nite Lac tea is 26 Example ass sages hae eee 29 Face SOU ta O EE 26
29. plastic strains 2 exclude effective plastic strains rltflg flag where flag can be 1 include stress resultants 2 exclude stress resultants engflg flag where flag can be 1 include internal energe and thickness 2 exclude internal energe and thickness cmpflg flag where flag can be 0 global 1 local ieverp flag where flag can be 0 more than one state can be on each plotfile 1 only one state can be on each plotfile beamip number of beam integration points dcomp flag where flag can be 1 off default no rigid body data compression 2 on rigid body data compression active 3 off option 1 but no nodal vel and accel 4 on option 2 but no nodal vel and accel shge flag Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA where flag can be 1 output shell hourglass energy off 2 output shell hourglass energy on stssz flag where flag can be 1 off default 2 on output time step size 3 output mass added mass or time step size n3thdt flag where flag can be 1 write material energy off 2 write material energy on nintsld n number of solid element integration points Isavs option flag where option can be 0 node 1 brick 2 beam 3 shell 4 thick shell where flag can be 0 table 1 1 table 2 3 table 3 Ismovie option flag where option can be 0 node 1 brick 2 beam 3 shell 4 thick shell where flag can be 0 table 1 1
30. pr pressure surface amplitude vectors sy nodes assigned to a numbered symmetry plane si element faces or nodes on sliding interface or contact surface rb boundary radiation orientation vectors on faces fl boundary flux orientation vectors on faces cv boundary convection orientation vectors on faces tm initial temperature at nodes Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 16 May 15 2007 TrueGrid Output Manual For LS DYNA ft boundary temperature at nodes fv boundary velocity vectors at nodes sw nodes assigned to a numbered stone wall nr non reflecting boundary faces jt identify nodes within a numbered joint iss interface save segments vhg volumetric heat generation or element local coordinate system axis syf nodes assigned to a numbered symmetry plane with failure acc the acceleration vectors n shell element outward normal vectors sp a numbered set of springs dampers pm all point masses npb nodes in the nodal print block epb elements in the element print blocks thic shell thicknesses mdep elements with momentum deposition sfb local coordinate system tepro temperature profile nodes by load curve sc ALE smoothing constraint directions spwf material 100 spot welds frb fixed rotational boundary displacements ffe follower forces fmom follower moments detp detonation points trp tracer particles The labels la command will label geometric objects in the physical display window In part
31. prompt and supply the load curve number Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 22 May 15 2007 TrueGrid Output Manual For LS DYNA Stone Walls A stone wall is defined with two commands Use the plane command to set the properties of the stone wall Nodes to react to the stone wall will not be selected automatically based on the tolerance Use the sw and swi commands in the part phase to assign faces of the model to react to the stone wall You can use the sw command in the merge phase as well to assign faces from a face set to react to the stone wall Bricks Brick elements refer to hexahedral prism wedge and tetrahedral elements and are considered the same type in LS DYNA Only one element type can associated with a material definition If you want two different element types with the same material properties you must define two materials Most but not all materials support the different brick element types All the different element formulations for brick elements are assigned in the Isdymats command Be sure to use the mate mt or mti command to assign the proper material to each section of the mesh The element local coordinate system used in an orthotropic or anisotropic material is imposed by the order of the nodes that define the element You can flip the nodal ordering to switch the orientation of this local coordinate system using the or command in the part phase Shells Shell elements
32. refer to both quadrilateral and triangular elements and sometimes referred to as structural elements All the different element formulations for shell elements are assigned in the Isdymats command Be sure to use the mate mt or mti command to assign the proper material to each section of the mesh The default shell thicknesses are included as part of the cross sectional properties These default thicknesses can be over ridden with the use of the thic command in the part phase Both can be over ridden for a region of the part using the th and thi commands If you have two surfaces that represent the inner and outer surfaces of a structure that is to be modeled using shell elements than you can use the ssf and ssfi commands in the part phase to create shells with variable thickness The orientation of the positive normal direction to the shell is dictated by the nodal ordering of the nodes that define the shell This positive direction is used for example to determine the direction of a positive pressure This direction can be flipped using the n command in the part phase The order of the nodes also dictate the local material coordinate system which can be important when using an orthotropic or anisotropic material Use the or command to flip the coordinate system to the desired direction When an angle is specified for the orientation of a composite material itis with respect to this orientation Copyright 2007 by XYZ Scientific Applications Inc
33. si sii Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 6 May 15 2007 TrueGrid Output Manual For LS DYNA CONTACT_AUTOMATIC_ONE_WAY_SURFACE_TO_SURFACE_TIEBREAK sid orpt si sii CONTACT_AUTOMATIC_SINGLE_SURFACE sid orpt si sii CONTACT_AUTOMATIC_SURFACE_TO_SURFACE sid orpt si sii CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_TIEBREAK sid orpt si sii CONTACT_CONSTRAINT_NODES_TO_ SURFACE sid orpt si sii CONTACT_CONSTRAINT_SURFACE_TO_SURFACE sid orpt si sii CONTACT_DRAWBEAD sid orpt si sii CONTACT_ERODING_NODES_TO_SURFACE sid orpt si sii CONTACT_ERODING_SINGLE_SURFACE sid orpt si sii CONTACT_ERODING_SURFACE_TO_SURFACE sid orpt si sii CONTACT_FORCE_TRANSDUCER_CONSTRAINT sid orpt si sii CONTACT_FORCE_TRANSDUCER_PENALTY sid orpt si sii CONTACT_FORMING_NODES_TO_SURFACE sid orpt si sii CONTACT_FORMING_ONE_WAY_SURFACE_TO_SURFACE sid orpt si sii CONTACT_FORMING_SURFACE_TO_SURFACE sid orpt si sii CONTACT_NODES_TO_SURFACE sid orpt si sii CONTACT_NODES_TO_SURFACE_INTERFERENCE sid orpt si sii CONTACT_ONE_WAY_SURFACE_TO_SURFACE sid orpt si sii CONTACT_ONE_WAY_SURFACE_TO_SURFACE_INTERFERENCE sid orpt si sii CONTACT_RIGID_BODY_ONE_WAY_TO_RIGID_BODY sid orpt si sii CONTACT_RIGID_BODY_TWO_WAY_TO_RIGID_BODY sid orpt si sii CONTACT_RIGID_NODES_TO_RIGID_BODY sid orpt si sii CONTACT_SINGLE_EDGE sid orpt si sii CONTACT_SINGLE_SU
34. spotWeld aros ries tara Mack res 6 CONTACT a ae R a o 134 spwd properties 143 TOSCA 25 A 12 25 141 142 NPS ada an 140 propertiies durado a 138 O a int Gore wnt qu 139 SDW A ROSA 6 JA ai hae oy T 25 SPWd nia as 6 25 143 A ee ee a A eter ee R 26 e 2 irate Ras OA Gee atte tele s 12 23 MM E untied wee 12 23 Stone wall 20 23 Stone Walls EA 23 AAA A aa mart 17 132 dummy interface 138 EXAMP S Laisa eer step ees 31 Manada ei EES 132 Surface constraint ia to Pas 19 OW LU da dao 16 23 A Maid Ta oekaki 16 23 VE sired Gah Aen Ga ES Oecd nL eee ES 6 16 SVE tics att ft wie ote ES Bu hag ene 6 16 SMED do za 19 20 PANE oy cole ea atop td aed sane 20 T dummy interface 138 NAAA O a Ogata ates tare 13 25 A tek he tektites Tan 13 25 temp hig ie OE cate eset ead 12 13 25 57 Temperature aa 25 Boundary eed 21 22 Tepr ada a da 13 25 ETANOL AS a CER 23 IG arat ibe OG Sock tia EY coe A 5 12 23 SS A 23 TIC res it des da 23 Mn A tirade gi Sia het A 24 a AA AS ks 23 LASA NOTES era cas e pd ea es 26 TUNE SO rar 2a ened tye dae 21 Pi ee 6 E 3 Sra NR TE ATTAR ia 18 Title at ee eats ae 16 18 NENA 12 e A 12 A A EA 17 MM AM ae satis ok atk ease eats 19 Tp Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 149 TAC ri Edo 27 TAM A T eee ede a ea aa 88 90 100 PP sale a a aay
35. table 2 3 table 3 Ismpgs option flag where option can be 0 node 1 brick 2 beam 3 shell 4 thick shell Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 125 where flag can be 0 table 1 1 table 2 3 table 3 ssstatex id part set id ibinary flag where flag can be 0 64 bit format 1 32 bit ieee runrsf time options where options can be nr H number of running restart file intfor time option where the option can be ledt n load curve id nrn number of running restart file xtfile nodal_set_id1 coordiante_system_id d3crck time option where the option can be ledt n load curve id nr H number of running restart file cplane options where options can be psid id part set id xct x x coordiante of tail of normal vector yet y y coordiante of tail of normal vector ZCL Z z coordiante of tail of normal vector xch x x coordiante of head of normal vector ych y y coordiante of head of normal vector zch z z coordiante of head of normal vector xhev x x coordiante of head of edge vector yhev y y coordiante of head of edge vector zhev z z coordiante of head of edge vector len length of edge in 1 direction lenm length of edge in m direction id id rigid body or accelerometer id type flag where flag for local system type can be 0 rigid body 1 accelerometer idhead options where options can be Copyright O 2007 by XYZ Scientific Applic
36. the form of a radial angular and z offset Depending on the coordinates of the beam the cylindrical vector will define a different orientation for each beam since the vector offset is made in cylindrical coordinates and then transformed to Cartesian coordinates Isdyeos LS DYNA3D equation of state Isdyeos material_ eos_type parameter_list where the eos_type can be one of the types listed below and where the parameter_list depending on eos_type and where the material_ associates this equation of state with a numbered material For linear polynomial model type 1 c0 constant cl coefficient c2 coefficient c3 coefficient c4 coefficient c5 coefficient c6 coefficient Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 43 e0 energy v0 volume For JWL model type 2 a constant b constant rl constant r2 constant omega constant e0 energy v0 volume For SACK model type 3 al constant a2 constant a3 constant bl constant b2 constant e0 constant v0 constant For GRUNEISEN model type 4 vei intercept sl coefficient s2 coefficient s3 coefficient gamma coefficient sa coefficient e0 energy YU volume For ratio of polynomials model type 5 al0 constant all constant al2 constant al3 constant a20 constant a21 constant a22 constant a23 constant a30 constant a31 constant Copyright O 2007 by XYZ Scientific Applications Inc All Rights
37. used to form a set of nodes by enumeration Alternatively nodes can be selected by proximity to geometry or from existing conditions Boolean operations can be performed on these sets A similar array of functions are also available for face sets fset and fseti and for element sets eset and eseti These sets will always be written to the LS DYNA output file unless they are deleted using the delset command Since conditions contact surfaces and loads can be applied to a set it may be redundant to have both the property applied to a set and to have the set written to the LS DYNA output file This is when it is appropriate to use the delset command after the property has been applied to the set You can name sets in TrueGrid and when they are written to the LS DYNA output file they are assigned a number If you name a set with a number it will appear in the LS DYNA output file by that number This feature is critical when referring to the set in a verbatim command Smooth Particle Hydro SPH The sparticle command is used before the cylinder or block command to transform any brick elements into Smooth Particle Hydrodynamic elements To continue using linear bricks issue the linear command When defining the material for these elements choose the SPH element type Be sure to specify the material density when defining this material It is needed to complete the SPH elements Use the plane command to specify the SPH symmetry plane The vd comma
38. vectors 3 for by cross product with shell normal shell elements only axes flag material axes change flag brick elements only where flag can be 1 default 2 switch material axes a and b 3 switch material axes a and c xp x coordinate aopt yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 vx x component aopt 3 vy y component aopt 3 Vz z component aopt 3 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 se strength shear strength on a b plane Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 65 xt strength longitudinal tensile strength along a axis xt yt strength longitudinal tensile strength along b axis yt ye strength transverse compressive strength yc alpha stress nonlinear shear stress parameter sn strength syz strength szx strength mangle angle beta list_of_material_angles aopt 3 For material type 23 Temperature Dependent Thermal Orthotropic w 12 Curves aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 for by cross product with shell normal shell elements only xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 VX x component aopt 3 v
39. z component aopt 3 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 dfailm maximum_strain_for_matrix dfails maximum_shear_strain tfail step time step for element deletion NS stress nonlinear shear stress parameter soft factor softening reduction factor for material strength in crashfront elements frbt softening fiber tensile strength yefac compression_strength remainder longitudinal compression strength after compressive matrix dfailt strain failure strain for tensile fiber mode dfaile strain failure strain negative for compressive fiber mode efs effective_failure_strain Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA xe strength xt strength ye strength yt strength se strength bt factor mangle angle longitudinal compressive strength longitudinal tensile strength a axis transverse compressive strength transverse tensile strength b axis shear strength ab plane weighting factor for shear term in tensile fiber mode beta list_of_material_angles aopt 3 e young s_modulus Idns oad_curve tcut stress hunl factor beta decay ve viscous_coefficient sf factor fopt option For material type 57 Low Density Urethane Foam nominal stress vs strain tension cut off stress hysteretic unloading factor stress oscillations and shock waves shape factor for unloading failure option after cutoff stress is reached w
40. 12 27 Tsave file ESI ria dolls 25 Unsipported ata ST E RO haus 27 US Li aa EA AE 86 WAGE e O a e e La 6 21 22 MACOS AS foes 6 21 MacC as a 6 21 MAC rr E A E aN 6 21 NACC S aaa R A AA 6 21 Va eSis aiae E caries A N bib Baas 6 21 Variable acceleration 21 22 Variable thickness 20 00 0000 sins 23 Variable velocity 21 22 VEV A H Oey 21 VOW R TATE aass 21 Ka ap aa Bia Bey 12 144 DON id M a 4 0 E X Ea Z 19 SPH a eas O 26 MS A di 12 19 Mei A O ATR dd elas 12 19 Velocities 2 ds da 20 22 Velocity Aa iCat 12 19 Verbatim 4 40 bie 5 mise ages Gren les 27 examples aa ei 30 A ae 26 a ora e aos Ors Da dy 21 VI A as 21 A a LA E O A 21 EIS A E AA 21 DG T aa HR R RAL ales 13 WHOL Serea eds aoa caay ee 13 21 O cop et eae ea EE aha 47 OIG A E ose 144 WED ta che AO E ARE 20 OLI sita A 20 IO O 21 A 23 Wite as E AO Ia 17 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 150 May 15 2007 TrueGrid Output Manual For LS DYNA Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 151
41. 15 2007 TrueGrid Output Manual For LS DYNA Irs3 release the rotation constraint about the y axis at intermediate points Irt3 release the rotation constraint about the z axis at intermediate points Remarks This command is available only in the block or cylinder Part Phase The ibmi jbm jbmi kbm and kbmi commands can also be used to generate embedded beam elements in the part phase Their full description can be found in the TrueGrid User s Manual The ibm command is presented here as representative of this class of commands These commands generate an array of beam elements conforming to the geometry and nodes ofa solid or shell regions This feature is useful in generating structural elements embedded within the solid or shell region Be sure to use the Isdymats command and select the beam element type and associated properties Also use the bsd command to define the cross section properties of these beams Some of the beam element properties specified in the Isdymats command and the bsd command are the default values and are over ridden by values specified in the bm command Some of the properties in this command are specific to the type of beam selected in the Isdymats command The orientation of the beam can be selected in many ways or none at all in some cases see the LS DYNA manual The v option specifies a vector for the orientation That vector is defined by the coordinate system If the part is a cylinder the vector is in
42. 16 25 SPINDE a eet ted 142 143 O 6 19 A A totes T aires 6 19 NA T S 6 16 18 25 26 SEU AAN 6 16 25 26 OSEE de AES ae elle Ro a 63 131 OMEGA cag cede RR tee cea 44 LE 44 et eE H we 23 24 Orientation lt Sara g aie ate et 18 23 24 A A be a Bar es 6 18 Sith esensue leet E Lag ath 132 ONO TOPS 23 24 A ms Mette O dite cash abuts alate 91 Qutput a ds ds E Na ela 17 part material torere niita Ea kee sent 5 Parts estes Gt et oad ds 5 PEE ts ao da teed 87 O hoe hes 6 16 19 20 23 SPH 3 ae ties E e E iA 26 PO A 12 25 Spring pth atte Bal toe None 142 143 o A ong xk eee eae 25 Post processing ads Wats ROE aA 27 RE alt dat O ea a 13 20 22 Prap e ie Waele hak a Re aes 13 20 22 PrESSUPC amp s25 0 20 e od A ese 20 22 o steerer TE 13 20 22 O Modi ooo ae A aiden eons R a 23 PSI caged Aucune ab OAM ce ALS ai 18 SPP Ours pi chee eases 142 Y 51 52 Radiation 76759 e O EEN 19 PDE eet aaa canine ten me E EE 6 19 A Berson push arose aaah dates Malin 6 19 Readmieshi rt ey San eens 18 Md a a 59 Remarks talar aa ds anto ba 33 Replication 4 ce a 18 o A 6 25 STT A A A 6 12 20 Rapid body o wh se ee Rohe ae ea 24 Rotation Gc a N d NZ a ad 12 19 21 22 Rotational CONSTA A d 19 SOS AN A mbes 6 19 Segment iii ded ia ake 26 e A IS ON 22 NN 26 OCIO cr at 26 O Gan ete R TO 2 26 numbering io Gig decias toe 26 Ma tes a N aran dH 6 12 20 SIM iio Meese eek ate Mews wastes 20 Shape stress na Aretha GAA ds Den
43. 2 May 15 2007 TrueGrid Output Manual For LS DYNA sp rho theta phi to select a node close to a spherical point nset name_of_set to select an entire node set fset face_set to select a face set boundary can be one of m master side of the interface s slave side of the interface options can be fail norm_failure_force shear_failure_force exp norm_failure_exp shear_failure_exp fsf coulomb_friction_scale viscous_friction_scale Remarks The global properties of a sliding interface are defined using the sid command Some interface types allow for nodes on the slave side Most require face sets for both the master and slave sides The dummy sliding interface type which is used to control the merging without the side effect of causing a sliding interface definition in the output allows for nodes on both the master and slave side sii assign sliding interfaces part phase sii progression sliding_ type options sid where sliding_ sliding interface reference number type m for master and s for slave options this depends on the type If the type is s then options can be normal_failure_stress_or_force shear_failure_stress_or_force exponent_for_normal_force exponent_for_shear_force fsf Coulomb_friction_scale viscous_friction_scale where the first pair of parameters must be specified in order to specify the second pair of parameters If the type is m then options can be fsf Coulomb_friction_scale viscous_friction_scale
44. 2 for 2x2 Gauss quadrature 3 for 3x3 Gauss quadrature 4 for 3x3 Lobatto integration 5 for 4x4 Gauss quadrature bmcross shape where the shape can be 0 for rectangular 1 for tubular Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA 2 for standard or user define sthi thickness tthi thickness sthil thickness sthi2 thickness tthil thickness tthi2 thickness sloc location where location can be 1 meaning the side where s is 1 0 meaning centered 1 meaning the side where s is 1 tloc location where location can be 1 meaning the side where t is 1 0 meaning centered 1 meaning the side where t is 1 vold volume for volume of discrete beam lump inertia for lumped inertia cablcid ocal_coordinate_ for a cable coordinate system Id cabarea area for a cable area caboff offset for a cable offset cabrx for a cable rotational constraint r direction cabry for a cable rotational constraint s direction cabrz for a cable rotational constraint t direction Thick shell element types only tshell for thick shell elements with the following options that can be added to the parameter_list elfot option where the option can be spp Tor single point in plane quadrature thick shell r22 for reduced 2x2 thick shell s22 for assumed strain 2x2 in plan shear factor tsti _points propt option where option can be 1 for average resultants amp fiber lengths 2 for res
45. 5 2007 TrueGrid Output Manual For LS DYNA sp2 p 0 const Selection of the orientation n3 node_ pm3 point_mass_ rt3 xyz const cy3 p Oz const sp3 p 0 D const orient x yz sd surface_ VxXyz Misc options mate material_ cs cross_section_ nbms number_of_beams indc const cur 3d_curve_ where const can be any of to create the last node of the beams in spherical coordinates to make an existing node the last node of the beams to make a point mass the last node of the beams to create the last node of the beams in Cartesian coordinates to create the last node of the beams in cylindrical coordinates to create the last node of the beams in spherical coordinates to specify a coordinate triple to orient the beams to orient beam axes in the orientation of the normal of the surface to orient beam axes in the direction of the vector to specify the material number to specify the cross section number see bsd to specify the number of beams in the string default is 1 to specify the constraints on the intermediate nodes to interpolate the string of beams along a 3D curve dx to constrain the x displacement dy to constrain the y displacement dz to constrain the z displacement rx to constrain the x axis rotation ry to constrain the y axis rotation rz to constrain the z axis rotation Selection of the nodal spacing res ratio drs st_ratio 2nd_ratio nds distribution_ as 0 1st_thickness as 1 last_thic
46. 66 67 75 96 98 ADISOMOPIC 2 299624 a 23 24 aopt 55 56 64 66 68 71 72 74 76 79 80 82 94 98 ATC HVE i od ete te ah alata eta eye Alt pn eh 18 SUED pita alten wtih Sta Geek ra 6 13 22 arrival A ananunua 22 ax 55 56 64 66 69 71 73 76 79 80 82 95 98 100 130 ay 55 56 64 66 69 71 73 76 79 80 82 95 98 100 130 az 55 56 64 66 69 71 73 76 79 80 82 95 98 100 130 Da 16 19 44 46 58 60 69 92 94 95 A II NA A 18 MAIS NI A Se AA 18 DO to Mac Aaa 46 DEM rd 24 25 52 97 Beams uti it ad 24 CLEAR 41 beta 45 55 58 66 67 73 75 80 81 83 88 95 Bra ie eh beta hats na dilata 16 19 example nAi a Bay te E TR 29 Bnd a O caxlh Ga land 12 24 34 DIF oeae wene be Sa Race daa Wek Soe ees 64 Block at weal ee feo ee anaes 5 16 SPH ios die bs taa 26 Block boundary 18 Bm uo AN Za 12 16 24 34 Bold o A d i rear da aN 5 Boolean operations 4 26 Boundary dra ios 19 non reflecting x sc day hes ume ees 19 Boundary conditions 19 Mas odessa Bad ee 132 BOC OAS Mineo nee ciate Oka 19 pna an ged oa ey ee eee Ga 19 A Mand bea eh Suse ZT 49 IST La pei ened ALA A 23 Bd A AAA 12 24 O II aes 37 A aia Raed A RY 68 96 99 CO anes A O 18 RI Se ita tate sae attain cone bight 132 O A aga a 26 Codintion SPH a st et Saat eh eee ae 26 COMME Rees eres 18 GOT oe cat cient E A odode 62 Concentrated loads 20 22
47. A SE GRA 5 O E analy vee O 5 Font Conventions o AR co Rie eBid RA N A aE 5 Supported Features in LS DYNA 2 0 1 cc ccc cee een e ene nees 5 Sliding or Contact Surfaces atin Ges ha AG ete Aw eS yA e OE at twang 18 Initial and Boundary Conditions id hee ha Cente eee 19 Loads a Pata tiaee hg deh O Ba AE be De coo oe 20 Load CUVES iO night tes e e tel o 22 Stone Walls 2 A RR AS gt apa ew Nek WES care tase 23 BACKS a a IR RE Re A 23 O O E 2 9 23 Dick ns pos eS O ARAS es 24 Beams A A T ERE RRR Ta T ace th eens eta wh RE 24 Joints and Rigid Bodies 4st sete eae eee waa gel eeu ein Ode ein Dawe 24 Springs Dampers and Point Masses 000 ce cece eee eee nee 25 TEMPETATUTES da AI DA IA Gwe eens 25 Sh red Constraints sz rosaire A A ee ARS 25 Spotwelds De ia EN E TEE IES AAA o PG I 25 Tied Nodes with Falles ads A AAA 26 A RER eed TAE Bel owe eee T Beare nhc pale n bine Te 26 Smooth Particle Hydro SPH awstats eee ae eh he ate Re eee ewes Cie eren ee 26 Data tor P st Processing e sta a gain hd wie ee un eit TRA ane ng elena 27 Unsupported Features in LS DYNA oooooccccocococo eee 27 I LS DYNA Output Examples 00000 Vide 8 As CON BCR aE dicta 29 Example 1 impacting rod orar ira orde adria 29 Example 2 cascading balls a in ai 29 HI LS DYNA Reference 220225209 1100 e a AE A ee 33 CONVENTIONS 21 AS do de ic a aE eA 33 bind Hughes Liu beam user defined integration points 34 bm create a string of beam elements 34
48. AL_TOPAZ LOAD_THERMAL_VARIABLE_ NODE MAT_3 PARAMETER_BARLAT gt 4 gt O QO G U Q AT_ADD_EROSION AT_ANISOTROPIC_ELASTIC AT_ANISOTROPIC_PLASTIC AT_ANISOTROPIC_VISCOPLASTIC AT_BAMMAN AT_BAMMAN_DAMAGE AT_BARLAT_ANISTROPIC_PLASTICITY AT_BARLAT_YLD96 AT_BILKHU DUBOIS_FOAM AT_BLATZ KO_FOAM AT_BLATZ KO_RUBBER AT_BRITTLE_DAMAGE AT_CABLE_DISCRETE_BEAM AT_CELLULAR_RUBBER AT_CLOSED_CELL_FOAM AT_COMPOSITE_DAMAGE AT_COMPOSITE_FAILURE_MODEL AT_COMPOSITE_FAILURE_SHELL_MODEL AT_COMPOSITE_FAILURE_SOLID_MODEL MAT_CONCRETE_DAMAGE MAT_CRUSHABLE_FOAM ARRE E X Ke He HE He Ke Ke KH H He a HK iF iss issi Isdyopts option spbk Isdyopts options xgrav xgdr Isdyopts options ygrav ygdr Isdyopts options zgrav zgdr Isdyopts options xvel xaverx Isdyopts options yvel xaverx Isdyopts options zvel xaverx Isdyopts options yldb hiteb xb0 yb0 zb0 tb0 Icb1 Icb2 clb ctb cpb dymain vhg vhgi fc fci fes fesi fec feci ll ffc ndl mom momi fmom pr pri pramp dom arri dist te tei temp Isdyopts options mhk tpz3d tepro Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Isdymats Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007
49. All Rights Reserved 74 May 15 2007 TrueGrid Output Manual For LS DYNA etan hardening_modulus err anisotropic hardening parameter Idss load_curve ex0 direction ey0 direction ez0 direction effective stress vs effective plastic strain For material type 40 Nonlinear Elastic Orthotropic Material modulus longitudinal direction modulus transverse direction modulus normal direction vba poisson s_ratio vea poisson s_ratio veb poisson s_ratio dtm dt temperature increment for stress initialization trmp t ramp time to ramp up to the final temperature alpha alpha thermal expansion coefficient gab shear_modulus gca shear_modulus gbc shear_modulus aopt option where the option can be one of 0 1 2 3 xp x coordinate yp y coordinate Zp z coordinate ax x component ay y component az z component dx x component dy y component dz z component vx x component vy y component YZ Z component for by nodes for by point and element center for by normal vectors by cross product with shell normal Shell elements only aopt 1 aopt 1 aopt 1 aopt 2 aopt 2 aopt 2 aopt 2 aopt 2 aopt 2 aopt 3 aopt 3 aopt 3 beta list_of_material_angles aopt 3 Idnsa load_curve Idnsb load_curve efail epsilon fail dtfail dt fail cdamp c damp nominal stress vs a axis strain nominal stress vs b axis strain failure strain time step for automatic element erosion damping coefficient Copyright 2007 by XYZ Scientifi
50. Applications Inc All Rights Reserved 18 May 15 2007 TrueGrid Output Manual For LS DYNA You can also assign materials LS DYNA parts to both the slave and master sides instead of selecting faces segments or nodes Care is needed to be sure that nodes between the master and slave materials LS DYNA parts are not merged Use the bptol command to avoid merging nodes between TrueGrid parts using a tolerance of 1 You can also use the sid command with the dummy type along with the si or sii command to avoid merging nodes Use the vd command to define boxes used to limit the region of a contact surface Initial and Boundary Conditions There are several ways to constrain nodes The b and bi commands in the part phase or the b command in the merge phase will constrain nodes in the global coordinate system Use the plane command to specify symmetry plane constraints including symmetry planes with failure Nodes in the model will be assigned to these symmetry planes based on the tolerance you specify in the plane command The Ib and the associated Isys command can be used to set the constraints in any coordinate system The sfb command can also be used to do this Be sure that something in the model has been constrained or the entire model might fly off To set non reflective or transmitting boundary conditions use the nr and nri commands in the part phase or the nr command in the merge phase Special care is needed when developing a model usi
51. Curve pe pressure_cutoff Pressure Cutoff for Plastic Strain out flag Plastic Strain Output where flag can be Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 91 0 for VolumetricPlastic Strain 1 for DeviatoricPlastic Strain b factor Residual Strength Factor After Cracking fail flag Failure of Element Flag where flag can be 0 for No Failure 1 for After cut off is reached Element is Eroded 2 for After cut off is reached Tension is no longer carried Choose only one levm oad_curve Icyp load_curve Yield vs Von Mises pressure Load Curve Second Stress Invariant J2 Yield Pressure Load Curve For material type 79 Hysteretic Soil k0 bulk_modulus Bulk Modulus at the Reference Pressure pU pressure_cutoff Cutoff Datum Pressure b exponent a0 constant al constant a2 constant df flag Exponent to Pressure Sensitive Moduli Yield Function Constant a0 Yield Function Constant al Yield Function Constant a2 Damping Factor where flag can be rp pressure gaml strain gam2 strain gam3 strain gamd strain gam5 strain taul stress tau2 stress tau3 stress taud stress tau5 stress Icid Joad_curve sfld factor gy strain ty stress 0 No Damping 1 Maximum Damping Reference Pressure Shear Strain Gammal Shear Strain Gamma2 Shear Strain Gamma3 Shear Strain Gamma4 Shear Strain Gamma5 Shear Stress Taul Shear Stress Tau2 Shear Stress Tau3
52. END EOS_LINEAR_POLYNOMIAL EOS_JWL EOS_JWLB EOS_SACK_TUESDAY EOS_GRUNEISEN EOS_RATIO_OF_POLYNOMIALS trp Isdyopts options trhist trhistbn vd vd Isys rigid sfb Icd fled spring spdp secondary result of many commands bm ibm ibmi jbm jbmi kbm kbmi bm ibm ibmi jbm jbmi kbm kbmi spdp spring see spd npm pm block cylinder th ssf sffi block cylinder th ssf sffi block cylinder block cylinder Isdymats mate mt mti automatic Isdyeos Isdyeos Isdyeos Isdyeos Isdyeos Isdyeos EOS_LINEAR_POLYNOMIAL_WITH_ENERGY_LEAK Isdyeos EOS_IGNITION_AND_GROWTH_OF_REACTION_IN_HE EOS_TABULATED_COMPACTION EOS_TABULATED EOS_PROPELLANT_DEFLAGRATION EOS_TENSOR_PORE_COLLAPSE HOURGLASS INITIAL_DETONATION INITIAL_MOMENTUM INITIAL_TEMPERATURE_ NODE INITIAL_VELOCITY_NODE INTEGRATION_BEAM INTEGRATION_SHELL x x x x x x Isdyeos Isdyeos Isdyeos Isdyeos Isdyeos Isdymats detp mdep temp tm tmi velocity rotation ve vei bind bsd sind Isdymats Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 12 May 15 2007 TrueGrid Output Manual For LS DYNA INTERFACE_COMPONENT_SEGMENT INTERFACE_SPRINGBACK LOAD_BODY_X LOAD_BODY_Y LOAD_BODY_Z LOAD_BODY_RX LOAD_BODY_RY LOAD_BODY_RZ LOAD_BRODE LOAD_DENSITY_DEPTH LOAD_HEAT_GENERATION_SOLID LOAD_NODE_POINT LOAD_SEGMENT LOAD_THERMAL_CONSTANT_NODE LOAD_THERM
53. ERMAL_NONLINEAR CONTROL_THERMAL_SOLVER CONTROL_THERMAL_TIMESTEP CONTROL_TIMESTEP DAMPING_GLOBAL DAMPING_PART_MASS DAMPING_PART_STIFFNESS DAMPING_RELATIVE DATABASE_ABSTAT DATABASE_ADAMS DATABASE_AVSFLT DATABASE_BINARY_D3CRCK DATABASE_BINARY_D3DRLF DATABASE_BINARY_D3DUMP DATABASE_BINARY_D3MEAN DATABASE_BINARY_D3PART DATABASE_BINARY_D3PLOT DATABASE_BINARY_D3THDT DATABASE_BINARY_INTFOR DATABASE_BINARY_RUNRSF DATABASE_BINARY_XTFILE DATABASE_BNDOUT DATABASE_CROSS_SECTION_PLANE DATABASE_CROSS_SECTION_PLANE_ID DATABASE_DEFGEO DATABASE_DEFORC DATABASE_ELOUT DATABASE_EXTENT_AVS Isdyopts options ncbs boxid sphdt idim sphmem sphform sphstart sphmaxv sphcont sphderiv sphini Isdyopts options struct Isdyopts options iterm Isdyopts options subcyl Isdyopts options endtim endcyc dtmin endeng endmas Isdyopts options mxmrts ctolt divep Isdyopts options atype ptype thslvr cgtol gpt eqheat fwork sbe Isdyopts options ktst tipt itst tmint tmaxt dtempt tscpt Isdyopts options dtinit seft isdo tslimt dt2ms Ictm erode mslst dt2msf Isnwds Isdyopts option gflg Isdyopts option mflg Isdyopts option sflg Isdyopts option rflg Isdyopts options abstat abstatbn Isdyopts options iflagadm m_units L units t_units Isdyopts options avsflt avsfltbn Isdyopts option d3erck Isdyopts options d3drlf d3rdfl Isdyopts option d3dump Isdyopts op
54. Facts tad ts 18 146 May 15 2007 TrueGrid Output Manual For LS DYNA FVVC sett oe A coartada 6 21 ENVIA ch Seka yoke Ach tee fs 6 21 VV ies sh R staan is 6 21 PAS Sit a A A A H 6 21 RST A es PR aE svete 6 21 R Aa 46 47 57 59 60 67 91 95 98 DU aa 55 64 66 68 72 94 RAID a e det 58 Graphics label ca eae ERRI 16 A bene eee aes 18 PA naw een eed aes 142 A E E Bae es 18 head Aaa s Sse bohw Sahu eran a VAS A 49 heat generator vec eae cake ey ees 21 boundary secuii gira Deak Wet eats 22 Hexahedral MA ght sting oe tates 23 MOT asd ene OS 6 12 24 41 WO Secrest ee wd ahs Sata 6 12 24 pulse ais tr a a 49 il A A 19 Integration points ooo ooooooo oo 24 O re 84 O Goats 13 16 27 ISSE e AEE e Mes eine a on 13 16 27 Italicized o aurei 0 a 5 JOD case n T NE a N E 6 12 24 JST eonia 4 A Rr Z aR be ak 6 12 24 IG roadenn oraa ea cease oe ews 6 24 JONS A Set eee ala Sia tah IA 24 Mpeg 6 16 24 A ae ROE A 6 12 24 ROMI year Beene 6 12 24 KEV WORE frit pA Sew aii ea lute aya tes 17 Labels graphics casta 16 bers are ree re R eee Senn eee 12 22 CXAMPIS oy weak AN 29 linear SPH aN A EM Se ae ea 26 Ia setae E ae eon Soo aAA 13 21 Load COVES cr anda daba 22 loader O E Shed 20 Local constraints o o ooooooo o 19 Local SEM e a AS 19 O 18 A RN 142 EStdt ds 133 S e Ur Aa 12 43 Lsdymats er aa 5 25 48 Example srl oS OT INE 29 lsdyopts a aa 8 27 analysis option
55. I LS DYNA Output Guide Introduction LS DYNA is a nonlinear explicit and implicit two and three dimensional finite element code for solid structural and fluid mechanics to simulate dynamic static heat transfer electrostatic and electromagnetic problems developed by Livermore Software Technology Company The focus in this manual will be on those features in TrueGrid that are specific to creating a LS DYNA input file The TrueGrid User Manual covers the creation of a mesh and will not be covered in this manual This manual is incomplete in another way because it cannot be used as a substitute for the LS DYNA manual For a full understanding of the use of these features the user must have a working knowledge of LS DYNA and be familiarity with a LS DYNA User Manual A common source of confusion is the notion ofa part and a material A LS DYNA part is equivalent toa TrueGrid material In contrast a TrueGrid material is defined using the Isdymats command Then any group of elements a region in the part phase of an element set in the merge phase can be assigned this material Also in contrast a TrueGrid part is formed using the block or cylinder command A TrueGrid part can contain many different materials or many TrueGrid parts can all be assigned the same matterial Font Conventions Different fonts are used through out this manual to indicate their meaning A literal is highlighted in bold A symbol to be substituted with a lit
56. ING CONTROL_RIGID CONTROL_SHELL CONTROL_SOLID CONTROL_SOLUTION Isdyopts options nreyck drtol drfctr drterm tssfdr irelal edttl idrflg Isdyopts options hgen rwen sInten rylen Isdyopts options expsh Isdyopts options ihq qh Isdyopts options n36flg Isdyopts options iautf iteropt iterwin dtmini dtmaxi Isdyopts options inal newgam newbet Isdyopts options neig center Iflag Iftend rflag rhtend eigmth shfscl Isdyopts options imflag dt0 imform nsbs istress cnstn form Zerov Isdyopts options nsolvr ilimit maxref dctoln ectoln Istoln dnorm diverg istif nlprt arcctl arcdir arclen arcmth arcdmp impIn2 impIn3 Isdyopts options Isolvr Iprint negev sorder drem drcprm autospc autotol Isdyopts options ias ascale strttim endtime Isdyopts options nmem Isdyopts options npopt neecho nrefup iaccop opifs ipnint ikedit iflush iprtf Isdyopts options nepu numrhs iconst ipllace Isdyopts options remin remax Isdyopts options Imf jntf orthmd partm sparse Isdyopts options wrpang itrist irnxx istupd theory bwc miter shproj rotascl intgrd lamsht Isdyopts options esort Isdyopts options ianpre Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 CONTROL_SPH CONTROL_STRUCTURED CONTROL_STRUCTURED_TERM CONTROL_SUBCYCLE CONTROL_TERMINATION CONTROL_TH
57. KKKKKKKK part 4 KKKKKKKKKKKKKKK Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 30 May 15 2007 TrueGrid Output Manual For LS DYNA brock T S DA S02 CAZA 32 sfi 1 2 1 2 2 sd 1 relaxi 1 2 20 0 1 lmi 1 gmi 3 mate 141 let 2 mx 2 my 2 gct 4 my 1 mx 1 mz 6 rxz my 1 mx 1 mz 6 my 1 ryz mx 1 mz 6 rxz my 1 ryz mx 1 mz 6 lrep 0 2 grep 1 4 endpart le KA A L e L k KEKR part 5 KKKKKKKKKKKKKKK partmode s cylinder 1 1 90 1 30 10 0 360 0 9 sd 2 sp 00 0 10 2 mbi 1 1 27 2 x 9 50866 sfi 1 sd 2 md Hees De De 0 429586 7 72 x 0 522362e 01 x mbi 1 2 mbi 1 2 2 2 x 0 728810e 02 mate 200 let 1 mz 1 lrep 1 endpart O KKKKKKKKKKKKKKKKKK part 6 KKKKKKKKKKKKKKK block 1 30 1 1 30 24 24 11 15 9 tri 1 2 1 v 0 841084e 07 12 0562 0 975823 tf rt 0 841084e 07 12 0562 0 975823 rt 1 00000 12 0562 0 975823 rt 0 775911e 07 11 0674 1 12492 mate 201 endpart O K part 7 KKKKKKKKKKKKKKK block 1 4 8 12 16 20 24 28 32 36 40 44 1 8 1 10 24 18 14 10 6 2 2 6 10 14 18 24 30 14 50 14 der I 5 00 60 0 58 9 000 Os Ae Ls dei12034056078009100 11 12 1 Mba Zi de LL 0 mds e ls K LA O mbi 4 1 Dope RO O MIs Se ale li Dive E mbi 6 1 A or 111 0 We ye A AS mbi 8 1
58. LS DYNA 1 no discrete spring damper elements are added 2 similar to option 0 nplte n number of plots psetit id part id neiph n number of integration point variables for solid elements neips n number of integration point variables for shell elements maxint n number of shell integration points strflg flag where flag can be 0 dump strain tensors off 1 dump strain tensors on sigflg flag where flag can be 1 include stress tensors 2 exclude stress tensors epsflg flag where flag can be 1 include effective plastic strains 2 exclude effective plastic strains rltflg flag where flag can be 1 include stress resultants 2 exclude stress resultants engflg flag where flag can be 1 include internal energe and thickness 2 exclude internal energe and thickness cmpflg flag where flag can be 0 global 1 local ieverp flag where flag can be 0 more than one state can be on each plotfile 1 only one state can be on each plotfile beamip n number of beam integration points dcomp flag where flag can be 1 off default no rigid body data compression 2 on rigid body data compression active 3 off option 1 but no nodal vel and accel 4 on option 2 but no nodal vel and accel Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 119 shge flag where flag can be 1 output shell hourglass energy off 2 output shell hourglass energy on stssz flag w
59. Modulus K Short Time Shear Modulus GO Long Time Shear Modulus Ginf Decay Constant Beta Vba Poisson s ratio Vca Poisson s ratio Vcb Poisson s ratio Gab Gbc Gca where the option can be one of 0 1 2 3 xp x coordinate yp y coordinate Zp z coordinate for by nodes for by point and element center for by normal vectors by cross product with shell normal Shell elements only aopt 1 aopt 1 aopt 1 Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA ax x component ay y component az Z component dx x component dy y component dz z component vx x component vy y component YZ Z component beta beta For material type 87 Cellular pr poisson s_ratio pU pressure phi ratio ivs strain g modulus b constant aopt 2 aopt 2 aopt 2 aopt 2 aopt 2 aopt 2 aopt 3 aopt 3 aopt 3 aopt 3 Material angle Rubber Poisson s Ratio Initial Air Pressure Ratio of Cellur Rubber to Rubber Density Initial Volumetric Strain Optional Shear Relaxation Modulus for Rate Effects Optional Decay Constant Computed Viscoelastic Parameters n order Order of Fit sgl specimen_gauge_ length Specimen Gauge Length sw specimen_width Specimen Width st specimen_thickness Specimen Thickness Icid load_curve Force Actual Change in Guage Length Load Curve n 0 Viscoelastic Parameters c01 coefficient c11 coefficient c20 coefficient c02 coefficient Gene
60. RFACE sid orpt si sii CONTACT_SLIDING_ONLY sid orpt si sii CONTACT_SLIDING_ONLY_PENALTY sid orpt si sii CONTACT_SPOTWELD sid orpt si sii CONTACT_SPOTWELD_WITH_TORSION sid orpt si sii CONTACT_SURFACE_TO_SURFACE sid orpt si sii CONTACT_SURFACE_TO_SURFACE_INTERFERENCE sid orpt si sii CONTACT_TIEBREAK_NODES_ONLY sid orpt si sii CONTACT_TIEBREAK_NODES_TO_SURFACE sid orpt si sii CONTACT_TIEBREAK SURFACE_TO_SURFACE sid orpt si sii CONTACT_TIED_NODES_TO_SURFACE sid orpt si sii CONTACT_TIED_SHELL_EDGE_TO_SURFACE sid orpt si sii Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 7 CONTACT_TIED_SURFACE_TO_SURFACE sid orpt si sii CONTACT_TIED_SURFACE_TO_SURFACE_FAILURE CONTROL_ACCURACY CONTROL_ADAPSTEP CONTROL_ADAPTIVE CONTROL_ALE CONTROL_BULK_VISCOSITY CONTROL_CFD_AUTO CONTROL_CFD_GENERAL CONTROL_CFD_MOMENTUM CONTROL_CFD_PRESSURE CONTROL_CFD_TRANSPORT CONTROL_CFD_TURBULENCE CONTROL_COARSEN CONTROL_CONTACT CONTROL_COUPLING CONTROL_CPU sid orpt si sii Isdyopts options nosu inn pidosu Isdyopts options factin dfactr Isdyopts options adpfreq adptol adpopt maxlvl tbirth tdeath Icadp gsam mnelsz npss ireflg adpene adpth imem orient maxel Isdyopts options dct nadv meth afac bfac cfac dfac efac tbeg tend aafac vfact vlimit
61. RMAL_ORTHOTROPIC Isdythmt MAT_THERMAL_ORTHOTROPIC_TD Isdythmt Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 15 NODE PART RIGIDWALL_PLANAR SECTION_BEAM SECTION_DISCRETE SECTION_SHELL SECTION_SOLID SECTION_SOLID_ALE SECTION_TSHELL SET_BEAM SET_NODE_COLUMN SET_NODE_LIST SET_PART_LIST SET_SEGMENT SET_SHELL_LIST SET_SOLID SET_TSHELL TITLE block cylinder bm jt npm b bi plane Isdymats plane sw swi Isdymats spd Isdymats Isdymats Isdymats Isdymats eset eseti sid si sii nset nseti Isdyopts gravity stress initialization sid contact between parts shtoso shtosoi dymain fset fseti plane syf syfi iss issi eset esti eset esti eset esti title You may want to view some of the properties graphically using the condition co or mlabs command in the merge phase Below is a table of those properties generated for LS DYNA that can be annotated using these commands dx nodes with a fixed translation in the x direction dy nodes with a fixed translation in the y direction dz nodes with a fixed translation in the z direction rx nodes with a fixed rotation about their x axis ry nodes with a fixed rotation about their y axis rz nodes with a fixed rotation about their z axis mom the nodes with prescribed torques fe point load vectors at nodes fd forced displacement vectors at nodes
62. Reserved May 15 2007 TrueGrid Output Manual For LS DYNA a32 constant a33 constant a40 constant a41 constant a42 constant a43 constant a50 constant a51 constant a52 constant a53 constant a60 constant a61 constant a62 constant a63 constant a70 constant a71 constant a72 constant a73 constant alpha constant beta constant al4 constant a24 constant e0 energy v0 volume For linear polynomial with energy deposition model type 6 c0 constant cl coefficient c2 coefficient c3 coefficient c4 coefficient c5 coefficient c6 coefficient e0 energy YU volume lc load_curve For ignition and growth of reaction in he model type 7 ap constant bp constant rip constant r2p constant Copyright 2007 by XYZ Scientific Applications Inc All RightsReserved TrueGrid Output Manual For LS DYNA May 15 2007 45 g coefficient wpcp constant ae constant be constant wece constant rle constant r2e constant ferit fraction i coefficient h coefficient Z exponent X exponent y exponent cp heat_capacity ce heat_capacity m exponent e0 energy t0 temperature For tabulated with compaction model type 8 eps list_strains pe list_constants t list_temperatures ku ist_modulus gamma gamma e0 energy v0 volume For tabulated model type 9 eps list_strains pe list_constants t list_temperatures gamma gamma e0 energy YU volume For propellant model type 10 a coef product JWL coefficient b coef product
63. _NODE BOUNDARY_SPC_SET BOUNDARY_SYMMETRY_FAILURE BOUNDARY_TEMPERATURE_NODE CONSTRAINED_EXTRA_NODES_SET CONSTRAINED_JOINT_SPHERICAL CONSTRAINED_JOINT_REVOLUTE CONSTRAINED_JOINT_CYLINDRICAL CONSTRAINED_JOINT_PLANAR CONSTRAINED_JOINT_UNIVERSAL CONSTRAINED_JOINT_TRANSLATIONAL CONSTRAINED_NODAL_RIGID_BODY CONSTRAINED_NODAL_RIGID_BODY_INERTIA CONSTRAINED_NODE_SET CONSTRAINED_RIGID_BODIES CONSTRAINED_SHELL_TO_SOLID CONSTRAINED_SPOTWELD CONSTRAINED_SPOTWELD_FILTERED_FORCE CONSTRAINED_TIED_NODES_FAILURE CONTACT CONTACT_1D CONTACT_AIRBAG_SINGLE_ SURFACE CONTACT_AUTOMATIC_GENERAL CONTACT_AUTOMATIC_GENERAL_ INTERIOR CONTACT_AUTOMATIC_NODES_TO_SURFACE TrueGrid commands se cv cvi fl fli arri dist nr nri frb fv fvi fvc fvci fvs fvsi acc acci accc accci aces accsi fvv fvvi fvve fvvci fvvs fvvsi vacc vacci vaccc vaccci vaccs vacesi fd fdi fdc fdci fds fdsi Isdymats rb rbi plane sfb Ib Isys sfb plane plane syf syfi ft fti jt jd jd jt jd jt jd jt jd jt jd jt jd jt rigid nset nseti rigid nset nseti jt jd mpc nset nseti rigbm shtoso shtosoi spotweld spw spwd jt jd spotweld fn fni si sii sid orpt sid rebar option ibm ibmi jbm jbmi kbm kbmi sid orpt si sii sid orpt si sii sid orpt si sii sid orpt si sii CONTACT_AUTOMATIC_ONE_WAY_SURFACE_TO_SURFACE sid orpt
64. ak6 Isdyna select LS DYNA output format Isdyna option where option can be keyword keyword format structured structed format obsolete Isdyopts LS DYNA analysis and database options Isdyopts options where options can be nosu CONTROL_ACCURACY inn pidosu set_id factin initial_relaxation_factor CONTROL_ADAPSTEP dfactr incremental_increase adpfreq time CONTROL_ADAPTIVE adptol tolerance adpopt type where type can be 1 angle change in degrees per adaptive refinement relative to surrounding elements for each element to be refined 2 total angle change in degrees relative to the surrounding element for each element to be refined Copyright 2007 by XYZ Scientific Applications Inc All RightsReserved TrueGrid Output Manual For LS DYNA May 15 2007 101 7 3D r adaptive remeshing for solid elements 8 2D r adaptive remeshing for axisymmetric and plane strain solid elements maxlvl max_number_of_levels tbirth time tdeath time Icadp load_curve gsam mnelsz size npss number_of _ passes ireflg level adpene distance adpth thickness imem percentage orient maxel number_of_elements det type CONTROL_ALE where type can be 1 lagrangian default 2 eulerian 3 arbitrary lagrangian eulerian 4 eulerian ambient nadv cycles meth method where method can be 1 donor cell half index shitft first order accurate 2 van leer half index shift second order 3 van leer afac weight bfac weight cfac weight dfac w
65. al type 36 Barlat s 3 Parameter Plasticity Model e young s_modulus pr poisson s_ratio hr rule hardening rule where the rule can be 1 for linear model 2 for exponential model cm exponent exponent in Barlat s yield surface Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 73 r00 constant r45 constant r90 constant Icid load_curve e0 parameter spi parameter beta list_angle aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 by cross product with shell normal Shell elements only xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 VX x component aopt 3 vy y component aopt 3 YZ z component aopt 3 For material type 37 Transversely Anisotropic Elastic Plastic e young s_modulus pr poisson s_ratio sigy vield_stress etan hardening_modulus err anisotropic hardening parameter Idss load_curve effective stress vs effective plastic strain For material type 38 Blatz Ko Compressible Foam sm shear_modulus For material type 39 Transversely Anisotropic Elastic Plastic with FLD e young s_modulus Idfl load_curve defining the flow limit diagram pr poisson s_ratio sigy vield_stress PAK Copyright 2007 by XYZ Scientific Applications Inc
66. al type 76 General Viscoelastic k bulk_modulus Constant Elastic Bulk Modulus pef ef flag Viscoelastic Option Calculate the Viscoelastic Constants Icid2 load_curve Load Curve if Constants beta t are determined via Least Squares Fit bstart initial_value Starting Beta nt number_of_terms Number of Terms in the Fit tramp time Optional Ramp Time for Loading List the Viscoelastic Constants gl maxwell_constant Maxwell Constant G1 betal decay_constant Decay Constant betal g2 maxwell_constant Maxwell Constant G2 beta2 decay_constant Decay Constant beta2 g3 maxwell_constant Maxwell Constant G3 beta3 decay_constant Decay Constant beta3 g4 maxwell_constant Maxwell Constant G4 beta4 decay_constant Decay Constant beta4 g5 maxwell_constant Maxwell Constant G5 beta5 decay_constant Decay Constant beta5 g6 maxwell_constant Maxwell Constant G6 beta6 decay_constant Decay Constant beta6 Volumetric Relaxation Option Calculate the Volumetric Relaxation Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 89 Icidk load_curve Load Curve if Constants beta t are determined via Least Squares Fit bstartk initial_value Volumetric Starting Beta ntk number_of_terms Volumetric Number of Terms in the Fit tramp time Volumetric Ramp Time for Loading List the Viscoelastic Constants k1 maxwell_constant Maxwell Constant K1 betak1 decay_constant Decay Constant beta k1 k2 maxwell_
67. alpha6 initial value of state variable 5 kap kappa initial value of state variable 6 damage evolution do initial damage exp exponent por porosity For material type 53 Low Density Closed Cell Polyurethane Foam e young s_modulus ca constant cb constant CC constant pU pressure phi ratio g0 gamma0 Icid Joad_curve ex direction ey dircetion initial foam pressure foam to polymer density initial volumetric strain For material type 54 Composite Damage Model Chang matrix failure longitudinal direction transverse direction Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA ez dircetion normal direction vba poisson s_ratio vea poisson s_ratio veb poisson s_ratio gab shear_modulus gca shear_modulus gbc shear_modulus aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 by cross product with shell normal Shell elements only xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 VX x component aopt 3 vy y component aopt 3 Vz Z component aopt 3 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 dfailm maximum_strain_for_matrix dfails maximum_shear_strain tfail step time step for element deletion ns stress nonlinear shear stress parameter soft factor softening reductio
68. ampers spd spring damper_ option type parameters where option can be dro flag Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 138 May 15 2007 TrueGrid Output Manual For LS DYNA where flag can be 0 for a linear spring damper 1 for a torsional spring damper dmf dynamic_factor tv test_velocity el clearance fd failure_deflection dle limit_compression dit limit_tension where type is the spring or damper s material model and where parameters is a list of corresponding parameters as in the following le stiffness for linear elastic lv damping for linear viscous iep elastic tangent yield for isotropic elastic ne d_curve_ for nonlinear elastic nv d_curve_ for nonlinear viscous gn oading_ unloading_ hardening tension compression for general nonlinear dhpt for a dashpot mv for a three parameter maxwell viscoelastic ite for a inelastic tension or compression only se elastic_value damping stress for scalar elastic mus 0 vmax sv a fmax tl tv fpe Imax ksh for muscle where 10 for initial muscle length vmx for maximum CE shortening velocity sv for scale factor for Vmax vs activs state a for activation level vs time function fmax for peak isometric force tl for active tension vs length function tv for active tension vs velocity function fpe Tor force vs length function Imax for relative length ksh Tor exponential rise constant Remarks A spring or damper is defined using either the spd
69. ar Modulus Gbcu in Uncompressed Configuration required Elastic Shear Modulus Gcau in Uncompressed Configuration required Material Viscosity Coefficient default 05 Bulk Viscosity Flag default 0 be No Bulk Viscosity Recommended Bulk Viscosity Active Sigma ab versus Shear Strain ab Load Curve default LCS Sigma bc versus Shear Strain bc Load Curve default LCS Sigma ca versus Shear Strain ca Load Curve default LCS Strain Rate Effects Load Curve optional Tensile Strain at Element Failure element will erode Shear Strain at Element Failure element will erode where the option can be one of by nodes by point and element center Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 99 2 by normal vectors 3 by cross product with shell normal Shell elements only xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 VX x component aopt 3 vy y component aopt 3 Vz z component aopt 3 For material type 134 Viscoelastic Fabric k Constant Elastic Bulk Modulus cs Compressive Stress Viscoelastic Option Calculate Viscoelastic Constants Icid2 load_curve bstart initial_value nt number_of_terms tramp time List the Viscoelastic Constants Bt Least Square Fit Load Curve Starting Beta Number of Terms
70. arse double precision 4 SMP parallel multi frontal sparse solver 2 5 SMP parallel multi frontal sparse solver 2 double precision 6 BCSLIB EXT direct sparse double precision 10 iterative best of currently available 11 iterative Conjugate Gradient method 12 iterative CG Jacobi preconditioner 13 iterative CG Choleski preconditioner 14 iterative Lanczos method 15 iterative Lanczos Jacobi preconditioner 16 iterative Lanczos Choleski preconditioner Iprint flag where flag can be 0 no printing 1 summary statistics on memory cpu time and iteration count 2 more statistics 3 even more statistics negev flag 1 stop on negative eigenvalue 2 print warning continue sorder option 0 method set automatically 1 MMD 2 Metis drem method 1 add stiffness 2 generate geometry based drilling constraint 3 neither dreprm constraint_parameter autospe switch 1 automatically scan 2 do not scan autotol tolerance ias flag 1 active 2 inactive CONTROL_IMPLICIT_STABILIZATION ascale stabilization_scale_factor Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA strttim stabilization_start_time endtime stabilization_end_time nmem percentage CONTROL_NONLOCAL npopt flag CONTROL_OUTPUT where flag can be 0 no suppression 1 nodal coordinates element connectivities rigid wall definitions and initial velocities are not printed neecho flag
71. at s Anisotropic Plasticity Model e young s_modulus pr poisson s_ratio ck constant eps0 constant cn constant cm potential flow potential in Barlat s model ca coef anistropy coefficient in Barlat s model cb coef anistropy coefficient in Barlat s model ce coef anistropy coefficient in Barlat s model cf coef anistropy coefficient in Barlat s model cg coef anistropy coefficient in Barlat s model ch coef anistropy coefficient in Barlat s model aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 by cross product with shell normal Shell elements only xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 VX x component aopt 3 vy y component aopt 3 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 71 YZ z component aopt 3 mangle angle beta Jist_angle yld96 esr0 factor hard option cl value c2 value c3 value c4 value alphax value alphay value alphaz0 value alphazl value For material type 34 Fabric Model ea direction longitudinal direction eb direction transverse direction ec direction normal direction vba poisson s_ratio vea poisson s_ratio veb poisson s_ratio esflg flag compressive stress flag where the flag can be 0 for
72. aterial type 2 ortho Orthotropic Elastic ea coefficient_ea eb coefficient_eb ec coefficient_ec prba coefficient_vba Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 54 May 15 2007 TrueGrid Output Manual For LS DYNA prea coefficient_vca preb coefficient_vcb gab coefficient_gab gbc coefficient_gbc gca coefficient_gca aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 for by cross product with shell normal shell elements only 4 for by normal vectors in cylindrical coordinates xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 vx x component aopt 3 amp 4 vy y component aopt 3 amp 4 YZ z component aopt 3 amp 4 p1 x component aopt 4 p2 y component aopt 4 p3 z component aopt 4 beta angle For material type 2 aniso Anisotropic Elastic el1 constitutive_matrix_coefficient c12 constitutive_matrix_coefficient c22 constitutive_matrix_coefficient c13 constitutive_matrix_coefficient c23 constitutive_matrix_coefficient c33 constitutive_matrix_coefficient c14 constitutive_matrix_coefficient c24 constitutive_matrix_coefficient c34 constitutive_matrix_coefficient c44 constitutive_matrix_coefficient c15 constitutive_matrix_coefficient c25 constitutive_matrix_coe
73. atio sigy vield_stress eh tangent_modulus fs fracture_strength pe pressure_cutoff For material type 18 Power Law Isotropic Plasticity e young s_modulus pr poisson s_ratio k yield_stress_coefficient n strain_hardening_exponent src strain_rate_parameter srp strain_rate_parameter sigy parameter vp For material type 19 Strain Rate Dependent Plasticity e young s_modulus Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 61 pr poisson s_ratio les0 yield_stress_curve_ etan tangent_modulus Ice young s_modulus_curve_ Icet tangent_modulus_curve_ Icfs effective_stress_failure_curve_ tss auto_deletion_time_step vp For material type 20 Rigid e young s_modulus nmad option where the madymo3d coupling option can be upno for normal ls dyna3d rigid body updates upel for couple to madymo ellipsoid uppl for couple to madymo plane coup option where the madymo3d cal3d coupling option can be vdacoup for attach vda surface and generate mesh for Is taurus meshcoup for undeformed geometry corresponds to local system undcoup for undeformed geometry corresponds to global system pincoup for generate a mesh for the ellipsoids and planes seatoup for generate madymo seatbelts conoup for generate a mesh for a contact entity mopt madymo cal3d_system_ pr poisson s_ratio alias vda_file_name cmo center of mass constraint option con constraints in the g
74. ations Inc All Rights Reserved 126 May 15 2007 TrueGrid Output Manual For LS DYNA csid id cross section id heading descriptor cross section descriptor fsi option option where option can be dt output interval where option can be id id surface id sid id set id stype flag where flag can be 0 part set 1 part 2 segment set iflagspr flag where flag for output element nodal force vector can be 0 off 1 output for deformable nodes 2 output for materials subset for nike3d file superpl timestep anpre flag specify the thermal solver type where the flag can be 0 structured analysis only 1 thermal analysis only 2 coupled structured thermal analysis yldb yield BRODE hiteb height xb0 x yb0 y zb0 z tb0 time Icb1 load_curve_ Icb2 load_curve_ clb factor ctb factor cpb factor gvst acceleration dir material_list massI depth BODY LOADS where dir can be x x direction y y direction Z z direction xgrav scale load_curve_ xgdr load_curve_ Copyright 2007 by XYZ Scientific Applications Inc All RightsReserved TrueGrid Output Manual For LS DYNA May 15 2007 127 ygrav scale load_curve_ yedr load_curve_ zgrav scale load_curve_ zgdr load_curve_ xvel scale load_curve_ xavdr load_curve_ xaver x0 y0 z0 yvel scale load_curve_ yavdr load_curve_ yaver x0 y0 z0 zvel scale load_curve_ zavdr load_curve_ zaver x0 y0 z0 usaco usa coupling Isnwds megawords defines the memory size to use in m
75. avity loading option can be 0 for all initialized 1 for only current material is initialized head comment 1st 200 materials only aet type for ambient element type where the ambient element type can be 1 for temperature 2 for pressure amp temperature 3 for pressure outflow 4 for pressure inflow The following option in the parameter _list is available for materials that do not allow failure and erosion excl exclusion_number pfail pressure_at_failure sigp1 principal_stress_at_failure sigvm equivalent_stress_at_failure epsp1 principal_strain_at_failure epssh shear_strain_at_failure sigth threshold_stress impulse stress_impulse_for_failure The following are element options that can be included in the parameter_list Not all types are allowed for every material Check the LS DYNA Users Manual for the pairing of element types and material models or use the dialogue box for this command to select these properties It is required that you choose the element type brick shell thick shell or beam within these material models The default is brick The material can only be applied to elements of that type using the mate mt mti or mtv commands Brick element types only brick for brick elements with the following options that can be added to the parameter_list elfob option where the option can be csb for constant stress brick i8b for 8 point integration brick Copyright 2007 by XYZ Scientific Applications Inc All R
76. both nsid nodal_set_id cid local_coordinate system_id nodout time_ interval nodoutbn flag where the flag can be 0 ascii 1 binary 2 both rbdout time_interval rbdoutbn flag where the flag can be Material energies file creation timestep Flag for binary material energies file MOVIE database file creation timestep Flag for binary MOVIE database file MPGS database file creation timestep Flag for binary MPGS database file Nodal interface forces file creation timestep Flag for binary nodal interface forces file Nodal force groups file creation timestep Flag for binary nodal force groups file Nodal point data file creation timestep Flag for binary nodal point data file Rigid body data file creation timestep Flag for binary rigid body data file Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 115 0 ascii 1 binary 2 both rcforc time_interval rcforcbn flag where the flag can be 0 ascii 1 binary 2 both rwforc time_interval rwforbn flag where the flag can be 0 ascii 1 binary 2 both sbtout time_interval sbtoutbn flag where the flag can be 0 ascii 1 binary 2 both secfore time_interval secforcbn flag where the flag can be 0 ascii 1 binary 2 both sleout time_interval sleoutbn flag where the flag can be 0 ascii 1 binary 2 both spefore time_interval speforbn flag where the flag can be 0 ascii 1 bina
77. c Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 75 For material type 41 to 50 User Defined Material Models cardl parameters card2 parameters card3 parameters card4 parameters card5 parameters card6 parameters card7 parameters card8 parameters card9 parameters card10 parameters aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 by cross product with shell normal Shell elements only xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 vx x component aopt 3 vy y component aopt 3 YZ z component aopt 3 mopt flag material axes change flag for bricks where flag can be 1 default 2 switch material axes a and b 3 switch material axes a and c nhy n number of history variables iortho flag orthotropic flag ibulk address address of bulk modulus array ig address address of shear modulus array ivect flag vectorization flag ifail flag failure flag ithermal flag temperature flag ihyper flag Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 76 May 15 2007 TrueGrid Output Manual For LS DYNA where flag can be 1 for deformation gradient between reference global and material frames orthotropic materials only 0 for deformatio
78. co Z component Remarks initial offset x component of the orientation vector y component of the orientation vector and or z component of the orientation vector A face can be either a master or slave side to this set of springs Then each node on the slave side is paired with a node on the master side to form a spring damper pair Use the spd command to define the properties of the spring damper The degrees of freedom to be coupled with the spring damper are specified for all of the nodes within the specified region Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 140 May 15 2007 TrueGrid Output Manual For LS DYNA spring create modify a spring part phase spring spring_ options where spring_ is the number of the spring that you are creating and options can be sine increment vlijk pml pointmass_ pmincl increment dx1 dyl dzl rxl ryl rzl v2ijk pm2 pointmass_ pminc2 increment dx2 dy2 dz2 rx2 ry2 rz2 sddn spd_ sminc increment amp scale_factor orop flag where flag can be increment the spring number when replicating the part vertex of the part as the first node point mass as the first node first point mass number when making part replications constrain spring in the x direction at the first node constrain spring in the y direction at the first node constrain spring in the z direction at the first node constrain spring about the x axis at the first node
79. component aopt 4 p3 z component aopt 4 beta angle betal list_angle plas s11 stress for plas Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 98 May 15 2007 TrueGrid Output Manual For LS DYNA 22 stress for plas 33 stress for plas 12 stress for plas For material type 126 Metallic Honeycomb e young s_modulus pr poisson s_ratio sigy vield_stress Ica load_curve Icb load_curve lec load_curve les load_curve vf relative_volume eaau elastic_modulus ebbu elastic_modulus eccu elastic_modulus gabu elastic_modulus gbcu elastic_modulus gcau elastic_modulus mu coefficient bulk flag where flag can 0 1 Icab load_curve Icbe load_curve Ieca load_curve lesr load_curve tsef strain ssef strain aopt option Y oung s Modulus required Poisson s Ratio required Yield Stress for Fully Compacted Honeycomb required Sigma aa versus Normal Strain aa Load Curve required Sigma bb versus Normal Strain bb Load Curve default LCA Sigma cc versus Normal Strain cc Load Curve default LCA Shear Stress versus Relative Volume Volumetric Strain Load Curve default LCA Relative Volume at which the Honeycomb is Fully Compacted required Elastic Modulus Eaau in Uncompressed Configuration required Elastic Modulus Ebbu in Uncompressed Configuration required Elastic Modulus Eccu in Uncompressed Configuration required Elastic Shear Modulus Gabu in Uncompressed Configuration required Elastic She
80. constant Maxwell Constant K2 betak2 decay_constant Decay Constant beta k2 k3 maxwell_constant Maxwell Constant K3 betak3 decay_constant Decay Constant beta k3 k4 maxwell_constant Maxwell Constant K4 betak4 decay_constant Decay Constant beta k4 k5 maxwell_constant Maxwell Constant K5 betak5 decay_constant Decay Constant beta k5 k6 maxwell_constant Maxwell Constant K6 betak6 decay_constant Decay Constant beta k6 For material type 77 Hyperviscoelastic Rubber pr poisson s_ratio Poisson s Ratio formf flag Formulation Flag where flag can be 0 Strain Energy Functional n order Order of Fit To Experimental Data nv number_of_terms Number of Terms in Fit Icid2 load_curve Bt Least Square Fit Load Curve sgl specimen_gauge_ length Specimen Gauge Length sw specimen_width Specimen Width st specimen_thickness Specimen Thickness Icid1 load_curve Force Versus Actual Change Load Curve tramp time Ramp Time for Loading c01 coefficient General Hyperelastic Coefficient C01 c11 coefficient General Hyperelastic Coefficient C11 c20 coefficient General Hyperelastic Coefficient C20 c02 coefficient General Hyperelastic Coefficient C02 gl maxwell_constant Maxwell Constant G1 betal decay_constant Decay Constant betal g2 maxwell_constant Maxwell Constant G2 beta2 decay_constant Decay Constant beta2 Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA g3 maxwell_constant Maxwell Consta
81. constraint at first end point 1dt3 dt3 to release the z translation constraint at first end point Irr3 rr3 to release the rotation constraint about the x axis at first end point Irs3 lrs3 to release the rotation constraint about the y axis at first end point Irt3 Irt3 to release the rotation constraint about the z axis at first end point Remarks This command is functional in the Merge Phase and it is designed to create a string of beams or a single beam We recommend that you use the dialogue box for bm You can use an existing node of the mesh for a beam specify coordinates to create a new node for a beam or you can use a point mass as a node for a beam Coordinates can be specified in Cartesian cylindrical or spherical coordinates Beam orientation can be defined using a third node using a point mass or by creating another node in Cartesian cylindrical or spherical coordinates Be sure to use the Isdymats command to select the beam element type and associated properties Use the bsd to define a beam cross section Some of the beam element properties specified in the Isdymats command or the bsd command are the default values and are over ridden by values specified in the bm command Some of the properties in this command are specific to the type of beam selected in the Isdymats command Nodes are automatically created if the number of beams specified is greater than 1 You can define beam elements that follow a 3D curve a
82. criteria nvec number_of_A conjugate_vectors istab stabilization_type where stabilization_type can be 0 ISTAB 1 1 Local jump stabilization 2 Global jump stabilization 1 No stabilization is active pbeta stabilization_parameter sid set_id plev hydrostatic_pressure_level pleid hydrostatic_pressure_load_curve itemp energy_equation_solver_type CONTROL_CFD_TRANSPORT nspec number_of_species_transport_equations_activated Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA imss mass_matrix_formulation ibaltd balancing_tensor_diffusivity_flag iaflx advective_flux_limiting_flag thetk viscous diffusion_weighting_ term thtaa advection_term_time_weighting thetf body_forces_time_weighting itsol equation_solver_type mxiter maximum_number_of_iterations ickint convergence_criteria_check_interval idiagn diagnostic_information_output_flag ichist convergence_history_file_generation_flag epst convergence_criteria ihgt hourglass_stabilization_type ehgt stabilization_parameter itrb turbulence_model_flag CFD_TURBULENCE smage Smagorinsky_constant sn1 sn8 optional_seed_nodes icoarse coarsening_ toggle CONTROL_COARSEN fangl allowable_flatness_angle sn1 sn8 optional_seed_nodes sisfac sliding_interface_penalties_scale_factor CONTROL_CONTACT rwpnal rigid_wall_penalties_scale_factor islchk initial_penetration_check shithk shell_thickness penopt penalty_sti
83. e Beam translational stiffness along r axis translational stiffness along s axis translational stiffness along t axis rotational stiffness about r axis rotational stiffness about s axis rotational stiffness about t axis translational viscous damper along r axis translational viscous damper along s axis translational viscous damper along t axis rotational viscous damper about r axis rotational viscous damper about s axis rotational viscous damper about t axis For material type 67 Nonlinear Stiffness Viscous 3d Discrete Beam r axis force vs r axis displacement s axis force vs s axis displacement t axis force vs t axis displacement r axis moment vs r axis rotation S axis moment vs s axis rotation t axis moment vs t axis rotation r axis damping force vs r axis rotational velocity s axis damping force vs s axis rotational velocity t axis damping force vs t axis rotational velocity r axis damping moment vs r axis rotational velocity s axis damping moment vs s axis rotational velocity t axis damping moment vs t axis rotational velocity For material type 68 Nonlinear Plastic Linear Viscous 3d Discrete Beam translational stiffness along r axis translational stiffness along s axis translational stiffness along t axis rotational stiffness about r axis rotational stiffness about s axis rotational stiffness about t axis translational viscous damper along r axis translational viscous damper along s axis translational visco
84. e of local inertia tensor zlip z z component of vector in local xy plane of local inertia tensor cid system_ local coordinate system id of local inertia tensor bpm options where an option can be dof flag where flag can be 1 x translational degree of freedom 2 y translational degree of freedom 3 z translational degree of freedom 4 translational motion in the given vector direction use v below 5 x rotational degree of freedom 6 y rotational degree of freedom 7 z rotational degree of freedom 8 rotational motion about the given vector use v below 9 degree of freedom rotation about x axis use offset below 9 degree of freedom radial about x axis use offset below 10 degree of freedom rotation about y axis use offset below 10 degree of freedom radial about y axis use offset below 11 degree of freedom rotation about z axis use offset below 11 degree of freedom radial about z axis use offset below vad flag where flag can be 0 velocity 2 displacement Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 63 3 velocity versus displacement 4 relative displacement Icid load_curve_ sf scale_factor V Xo Yo Zo birth time death time offset offset offset mrb rigid_material_ nodes node node rbv load_curve_ amplitude x y z rbd oad_curve_ amplitude x y z rigid body velocity obsolete rigid body displacement obsolete
85. eck 88 Shared constraints ooo oooo 25 SHOAL sed A Re em 51 53 shell a Gees tata A ool ates aps eater a 50 tOSOHG i ocd r tees tikes 25 Shell orientation cid ts Ria 5 Shell thickness estat ees 5 Shella aaa tou AER CS 23 S tOSO enana e TE O ooo 6 16 25 SHTOSOD sera nra A 6 16 25 SA A os 5 6 16 18 132 SI D e de EEA 137 Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 148 May 15 2007 TrueGrid Output Manual For LS DYNA EXAP S Jana outa eos 29 ON 132 with si and Sit coi ee 137 Sit sauteed Pai ee dae 5 6 16 18 133 A nt eee ae eho tae ge 12 24 138 e Te rire ta O a 19 Slide HIMES 85 3 4 fo oe pao hag ales 133 Sliding interface a 26 133 dummy interface vecinas 138 A a a E densa 132 O a eh ee 9 l T T 133 MA he 4 eno 132 Sliding Surface 4s es re daras 5 18 TAGES soa ce ee do 18 O Reh EN 18 graphics Et its EAN 18 initial penetration 18 merged nodes cece ay Res 18 mesh density A 18 orientation 4 2 6 4 Gece cieded Mace ees 18 replication x x65 Aw AS deta 18 BOIS a ota Sd chee aa 18 A dg Ra goa TRAE 5 18 YPE nae ae eee O ween Ome ONE eA 18 smoothing constraints 19 SOM tad 79 80 82 Solid Ol S228 ows eee i es 25 SPatlicle aie torta ia 26 Pd yee ah as emake ee E 16 25 138 SPO rai cede doade eee A 142 PGB rte Geen EUAN nds gk te 12 25 140 DA ce scares its 139 DP li sede Creede cea awe es 26 54 SPH graphics oi A eid 26
86. ector Remarks This command creates or modifies a spring with the options in order to specify the direction of the spring and the material A node defining the end of the spring can be a vertex of the present part or a point mass see npm and pm The spring command is usually invoked twice to generate a single spring once for each node of the spring This can be done across several parts or in the Merge Phase This spring is replicated along with the part see lrep grep and pslv Use the spd command to define the properties of the spring spring create modify a numbered spring spring spring_ options where an option can be nl node_ assign a structure node as the first node pmi pointmass_ assign a point mass as the first node dx1 constrain spring in the x direction at the first nod dyl constrain spring in the y direction at the first node dzl constrain spring in the z direction at the first node rX constrain spring about the x axis at the first node ryl constrain spring about the y axis at the first node rzl constrain spring about the z axis at the first node n2 node_ assign a structure node as the second node pm2 assign a point mass as the second node dx2 constrain spring in the x direction at the second node dy2 constrain spring in the y direction at the second node dz2 constrain spring in the z direction at the second node rx2 constrain spring about the x axis at the second node ry2 constrain spring about the y axis at the seco
87. ed May 15 2007 TrueGrid Output Manual For LS DYNA where procedure can be 0 Structural analysis only 1 thermal analysis only 2 coupled structural thermal analysis 4 incompressible low Mach CFD analysis only 5 coupled incompressible fluid structure interaction ncbs number_of_cycles CONTROL_SPH boxid id sphdt death_time idim dimension 3 3D problems 2 2D problems 2 2D axisymmetric struct CONTROL_STRUCTURED iterm subcyl CONTROL_SUBCYCLE endtim time CONTROL_TERMINATION endcye cycle dtmin factor endeng percent_change endmas percent_change mxmrts number_time_steps CONTROL THERMAL NONLINEAR ctolt tolerance divep value atype type CONTROL_THERMAL_SOLVER where type can be 0 steady state analysis 1 transient analysis ptype type where type can be 0 linear problem 1 nonlinear problem with material properties evaluated at gauss point temperature 2 nonlinear problem with material properties evaluated at element average temp thslvr type where type can be 1 actol symmetric direct solver 2 dactol nonsymmetric direct solver 3 dscg diagonal scaled conjugate gradient iterative default 4 iccg Incomplete Choleski conjugate gradient iterative cgtol tolerance gpt number 0 default is set to 8 1 one point quadrature is used eqheat value fwork fraction sbe constant Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 111 kts
88. eferenced when the Isii or gsii commands are used with replication You can use sets in the merge phase to add faces or nodes to a sliding surface These sets can be formed with the combined use of the fset for faces and the nset for nodes commands in the part and merge phase Only use node sets when defining a sliding surface where nodes are on the slave side and otherwise only use face sets The node density between the master and slave sides of the interface should be roughly equal When forming the mesh in the part phase it may be necessary to build into the mesh a small gap between the master and slave sides of the contact surfaces depending on the mesh density and the curvature to avoid initial penetration of the slave side into the master side When you merge the nodes in the merge phase the nodes from the slave side will not be allowed to merge with the nodes on the master side Use the mns command in the merge phase to override this condition When you fist merge the nodes a table will be printed to the text window and the tsave file listing the number of faces and nodes associated with each sliding surface Check this table carefully You can also see the faces and nodes of either side of the sliding surfaces using the co command When using this in combination with the hide graphics option you can see the orientation of the faces Use labels command to show how the nodes have merged graphically Copyright 2007 by XYZ Scientific
89. ehrf hardening_modulus fsrf failure_strain pr poisson s_ratio tlimit tensile_limit slimit shear limit ftough fracture_toughness sreten shear_retention vise viscosity e young s_modulus pr poisson s_ratio es yield_stress etan hardening_modulus tsms time_step_size fs failure_strain nrrf resultant_at_failure nrsf resultant_at_failure nrtf resultant_at_failure mrrf resultant_at_failure mssf resultant_at_failure trrf resultant_at_failure e Young s Modulus pr Poisson s Ratio sigy Initial Yeild Stress Choose a Method Hardening Modulus of Reinforcement True Failure Strain of Reinforcement Poisson s Ratio Tensile Limit Shear Limit Fracture Toughness Shear Retention Viscosity For material type 100 beam elfom spw Spot Weld Young s modulus Poisson s ratio Yield Stress Hardening modulus Time step size for mass scaling Failure strain for eroding elements Force resultant Nrrf at failure Force resultant Nrsf at failure Force resultant Nrtf at failure Moment resultant Mrrf at failure Moment resultant Mssf at failure Moment resultant Trrf at failure For material type 103 Anisotropic Viscoplastic flag 0 List all Material Parameters qril parameter crl parameter qr2 parameter crl parameter qx1 parameter cx1 parameter qx2 parameter cx2 parameter vk parameter Isotropic Hardening Paameter Qr1 Isotropic Hardening Paameter Crl Isotropic Hardening Paameter Qr2 Isotropic Hardening Paameter Cr2 Kin
90. eight efac weight tbeg time tend time aafac factor vfact factor vlimit limit ebc flag where flag can be 0 Off 1 On with stick condition 2 On with slip condition Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA ql quadratic_viscosity_coefficient CONTROL_BULK_VISCOSITY q2 linear_viscosity_coefficient ibq type where type can be 1 standard also additional shels 1 standard default itsflg flag CONTROL_CFD_AUTO where flag can be 0 IAUTO for fixed time step size 1 Fixed time step based on DTINIT 2 Time step based on CFL stability for INSOL 3 3 Automatic time step selection epsdt tolerance dtsf scale_factor adtmax time_step_size insol solver_type CONTROL_CFD_GENERAL dtinit initial_time_step cfl maximum_advective_grid CFL ickdt Reynolds_and_advective_CFL_check_interval iacure accuracy_flag mimass mass_matrix_formula CONTROL_CFD_MOMENTUM where mass_matrix_formula can be 0 IMASS 1 default 1 Lumped mass matrix 2 Consistent mass matrix 3 Higher order mass matrix iadvec balancing_tensor_diffusivity_flag where balancing_tensor_diffusivity_flag can be 0 IADVEC 10 for forward Euler with BTD default 1 IADVEC 0 for forward Euler without BTD 10 forward Euler with BTD 40 fully implicit with simplified trapezoid rule ifet advective_flux_limiting_advection_scheme_toggle where advective_flux_limiting_advection_scheme_toggle can be 0 IFCT 1 default 1 Advect
91. ematic Hardening Paameter Qx1 Kinematic Hardening Paameter Cx1 Kinematic Hardening Paameter Qx2 Kinematic Hardening Paameter Cx2 Viscous Material Parameter Vk vm parameter Viscous Material Parameter Vm flag 1 Load curve and Optionally the Viscous Parameters less load_curve Load Curve Number Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 97 alpha alpha Distribution of Hardening Used in the Curve Fitting vk parameter Viscous Material Parameter Vk vm parameter Viscous Material Parameter Vm flag 1 Load Table automatically calculates the Viscous Parameters less load_table Load Table Number alpha alpha Distribution of Hardening Used in the Curve Fitting Choose the Same Element Type R00 for Shell R45 for Shell R90 for Shell F for Brick G for Brickh H for Brick L for Brick M for Brick N for Brick aopt option where the option can be one of 0 by nodes 1 by point and element center 2 by normal vectors 3 by cross product with shell normal Shell elements only 4 by normal vectors in cylindrical coordinates xp x coordinate aopt 1 amp 4 yp y coordinate aopt 1 amp 4 Zp z coordinate aopt 1 amp 4 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 vx x component aopt 3 amp 4 vy y component aopt 3 amp 4 YZ z component aopt 3 amp 4 p1 x component aopt 4 p2 y
92. eral or a number is italicized A computer example uses the Courier font A button in from the Graphical User Interface is both italic and bold Supported Features in LS DYNA There are many features in TrueGrid to create a model for LS DYNA The table below shows the commands that are used for each feature in LS DYNA Sometimes there are several commands listed For example shells can be generated using both the block and cylinder commands The n and th are used to set the properties of these shells In another example the si and sii commands are used to identify the faces of the mesh that form the sliding or contact surfaces The associated sid command is used to assign properties to the sliding surface TrueGrid is specifically a three dimensional mesh generator and preprocessor A two dimensional mesh can be generated in TrueGrid for LS DYNA by forming a shell mesh where the z coordinate is set to 0 The easiest way to be sure that the z coordinates are kept at zero is to project the entire shell mesh onto the plane where z 0 sd plan 0 0 0 0 0 1 sfi 1 sd Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 5 LS DYNA feature ALE_SMOOTHING BOUNDARY_CONVECTION_SEGMENT BOUNDARY_FLUX_SEGMENT BOUNDARY_NON_REFLECTING BOUNDARY_PRESCRIBED_MOTION_NODE BOUNDARY_PRESCRIBED_MOTION_RIGID BOUNDARY_RADIATION_SEGMENT BOUNDARY_SLIDING_PLANE BOUNDARY_SPC
93. erbatim CONTACT_automatic_SINGLE_SURFACE_TITLE 1 TrueGrid Sliding Interface dl 0 407 07 0 4 97 07 0 Oer Oop Op Ove LO ey A Osy Oer Og IO 2 endverbatim sd 1sp 0001 partmode i c kkxkxkxkxkxkxkxkxkxkxkxkxkkxkxkxk part 1 kkxkxkxkxkxkxkxkxkxkxkxkxxkxk block 474345 2 2 2 4 2 42 342 2 sfi J De 2 2 sd 1 relaxi 1 2 20 0 lmi 1 gmi 17 mate 1 lct 16 mx 2 repe 4 my 2 my 2 mx 2 5 my 2 mx 5 0 my 2 mx 7 5 my 4 my 4 mx 2 1 my 4 mx 4 2 my 4 mx 6 3 my 6 my 6 mx 2 2 my 6 mx 4 4 my 8 MX 2 gct 4 my 1 mx l rxz my 1 mx l my 1 ryz mx 1l rxz my 1 ryz mx 1 lrep 0 16 grep 1 4 endpart Cc KKKKKKKKKKKKKKKEKEKK part 2 KKKKKKKKKKKKKKK block 4 4 4 2 2 2 lt 2 2 lt 2 sf Ze 1 2 2 sd 1 relaxi 1 2 20 0 1 lmi 1 gmi 12 mate 69 let 11 mx 2 repe 3 my 2 my 2 mx 2 5 my 2 mx 5 0 my 4 my 4 mx 2 1 my 4 mx 4 2 my 6 my 6 mx 2 2 gct 4 my 1 mx 1 mz 2 rxz my 1 mx 1 mz 2 my 1 ryz mx 1 mz 2 rxz my 1 ryz mx 1 mz 2 lrep 0 11 grep 1 4 endpart O KKKKKKKKKKKKKKKKKK part 3 KKKKKKKKKKKKKKK bikoek 143 4346 DO LASA AC S82 32 sfi 1 23 1 2 2 sd 1 relaxi 1 2 20 0 lmi 1 gmi 6 mate 117 lct 5 mx 2 repe 2 my 2 my 2 mx 2 5 my 4 gct 4 my 1 mx 1 mz 4 rxz my 1 mx 1 mz 4 my 1 ryz mx 1 mz 4 rxz my 1 ryz mx 1 mz 4 lrep 0 5 grep 1 4 endpart Cc KKKKKKKKKK
94. fficient Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 55 c35 constitutive_matrix_coefficient c45 constitutive_matrix_coefficient c55 constitutive_matrix_coefficient c16 constitutive_matrix_coefficient c26 constitutive_matrix_coefficient c36 constitutive_matrix_coefficient c46 constitutive_matrix_coefficient c56 constitutive_matrix_coefficient c66 constitutive_matrix_coefficient aopt option where the option can be one of Nm amp 4 xp x coordinate yp y coordinate Zp z coordinate ax x component ay y component aZ Z component dx x component dy y component dz z component vx x component vy y component YZ Z component pl x component p2 y component p3 z component for by nodes for by point and element center for by normal vectors for by cross product with shell normal shell elements only for by normal vectors in cylindrical coordinates aopt 1 aopt 1 aopt 1 aopt 2 aopt 2 aopt 2 aopt 2 aopt 2 aopt 2 aopt 3 amp 4 aopt 3 amp 4 aopt 3 amp 4 aopt 4 aopt 4 aopt 4 For material type 3 Kinematic Isotropic Elastic Plastic e young s_modulus pr poisson s_ratio src strain_rate_parameter srp strain_rate_parameter sigy vield_stress etan tangent_modulus beta hardening_parameter fs failure_strain vp Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For
95. ffness_value_option thkchg shell_thickness_changes orien contact_interface_segment_reorientation_flag dkeep flag usrstr storage_per_contact_interface usrfre storage_per_contact_interface nsbes number_of_cylces interm intermittent_searching_flag xpene multiplier tfst actual_shell_thickness_flag itftss time_step_size_flag itfpsn bypass_projection_flag dsfric default_static_coefficient_of_friction ddfric default_dynamic_coefficient_of_friction dede default_exponential_decay_coefficient dvfe default_viscous_friction_coefficient dth default_contact_thickness dthsf thickness_scale_factor Copyright 2007 by XYZ Scientific Applications Inc All RightsReserved TrueGrid Output Manual For LS DYNA May 15 2007 105 dpensf default_local_penalty_scale_factor ignore initial_penetrations_flag freeng frictional_energy_flag unleng factor CONTROL_COUPLING untime factor unfore factor timid time flipx flag 0 off 1 on flipy flag 0 off 1 on flipz flag 0 off 1 on sybcyl interval cputim seconds CONTROL_CPU nrcyck iterations CONTROL_DYNAMIC_RELAXATION drtol tolerance drfetr factor drterm time tssfdr factor irelal flag 0 off 1 on edttl tolerance idrflg flag where flag can be 1 activate dynamic relaxation 2 initialize to a prescribed geometry hgen flag 1 off 2 on CONTROL_ENERGY rwen flag 1 off 2 on sInten flag 1 off 2 on rylen flag 1 off 2 on expsh CONTROL_EXPLOSIVE_SHADOW ihq type CONTROL_HOURGLASS
96. gawords KEYWORD hgen flag calculating hourglass energy where the flag can be 1 off 2 on mrpe flag material repositioning flag for madymo m cal3d coupling where the flag can be 0 off 1 on section 68 input data is read 2 no repositioning of nodes spbk options Spring back where an option can be optl type where type can be Lsdyna Nastran Seamless opt2 thic where thic can be thickness nothickness mts material_list nshv n ftype file_type where the file_type can be 0 ascii 1 binary 2 ascii and binary Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA ndi node_ constrains nd2 node_ constrains nd3 node_ constrains nd4 node_ constrains where a constraint can be dx constrain in the x direction dy constrain in the y direction dz constrain in the z direction rx constrain in the x rotation ry constrain in the y rotation rz constrain in the z rotation icsc implicit coupling for springback calculations Isdythmt LS DYNA thermal material properties Isdythmt material_ material_type parameter_list where the material_type can be one of the types listed below and the parameter_list depending on material_type and where the material_ associates these thermal properties with a numbered material For material type 1 Isotropic tro density tgrle load_curve_ tgmult multiplier he capacity te conductivity For material type 2 Orthotropic t
97. hase to create a node set Also click on the pick button in the environment window during the merge phase Then you can use the mouse to modify or create a node set The nodes sharing a set of constraints will not be merged together Use the shtoso and shtosoi commands to form the constraints supporting the shell to solid shared constraints in LS DYNA Spotwelds The Spotweld window found in the boundary menu is an easy and interactive way to create multiple spot welds using the mouse to click on the nodes It is only available in the merge phase It creates spw commands and writes them to the tsave session file The spw creates a single spotweld constraint The spwd command defines the properties of the spotweld in the spw Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 25 command The spwf command is designed to create the unique spotweld feature using material type 100 Tied Nodes with Failure The fn and fni commands in the part phase will generate a shell or brick mesh where every element in the region has unique nodes The coincident nodes are automatically tied together with a failure criteria The nodes that are tied together are not merged together in the merge phase Sets Node face segment and element sets can be formed in several ways The nset and nseti can be used to form node sets in the part phase The nset command in the merge phase can be
98. here flag can be 1 off default 2 on output time step size 3 output mass added mass or time step size n3thdt flag where flag can be 1 write material energy off 2 write material energy on nintsld n number of solid element integration points Isavs option flag where option can be 0 node 1 brick 2 beam 3 shell 4 thick shell where flag can be 0 table 1 1 table 2 3 table 3 Ismovie option flag where option can be 0 node 1 brick 2 beam 3 shell 4 thick shell where flag can be 0 table 1 1 table 2 3 table 3 Ismpgs option flag where option can be 0 node 1 brick 2 beam 3 shell Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 120 May 15 2007 TrueGrid Output Manual For LS DYNA 4 thick shell where flag can be 0 table 1 1 table 2 3 table 3 ssstatex id part set id ibinary flag where flag can be 0 64 bit format 1 32 bit ieee d3plot time form options where the form can be ledt n load_curve_id nrn number of running restart file where options can be beam type where type can be 0 discrete spring damper elements are added 1 no discrete spring damper elements are added 2 similar to option 0 nplte n number of plots iform flag where flag can be 0 LS DYNA database format 1 ANSYS database format 2 both LS DYNA and ANSYS database format ibinary flag where flag can be 0 64 bit format 1 32 bit ieee neiph n number of integration point variable for s
99. here the failure option can be 0 1 kflg flag tensile stress remains at cut off value tensile stress is reset to zero bulk viscosity activation flag where the flag can be 0 1 oe modulus obeta decay se stiffness_coefficient ea direction eb direction ec direction kf modulus sr factor sf factor vba poisson s_ratio vea poisson s_ratio veb poisson s_ratio sba strength sca strength scb strength no bulk viscosity recommended bulk viscosity active optional young s relaxation modulus for rate effects optional decay constant contact interface stiffness For material type 59 Composite Failure Model Plasticity Based longitudinal direction transverse direction normal direction bulk modulus of failed material reduction factor default 0 447 shells softening factor default 0 0 shells in plane shear strength bricks transverse shear strength bricks transverse shear strength bricks Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 81 gab shear_modulus gca shear_modulus gbe shear_modulus xc strength ye strength ze strength aopt option long compressive strength a axis trans compressive strength b axis normal compressive strength c axis where the option can be one of UN amp 4 xp x coordinate yp y coordinate Zp z coordinate ax x component ay y component aZ Z component dx x component dy y c
100. icient For material type 64 Strain Rate Sensitive Power Law Plasticity me modulus modulus of elasticity pr poisson s_ratio mk material_constant sm coef strain hardening coefficient sn coef strain rate sensitivity coefficient is initial_strain vp For material type 65 Modified Zerilli Armstrong cg constant ceps0 constant cn constant tr room_temperature pe pressure_cutoff sp spall_type where the spall type can be 1 Minimum pressure limit 2 Maximum principal stress default 3 Minimum pressure cutoff fs strain failure strain for erosion cl constant c2 constant c3 constant c4 constant c5 constant c6 constant bl constant b2 constant b3 constant gl constant g2 constant g3 constant g4 constant vp Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA tsr stiffness tss stiffness tst stiffness rsr stiffness rss stiffness rst stiffness tvr stiffness tvs stiffness tvt stiffness rvr damper rvs damper rvt damper Idrr oad_curve Idss load_curve Idtt load_curve Idmrr oad_curve Idmss oad_curve Idmtt load_curve Idvrr load_curve Idvss load_curve Idvtt load_curve Idvmrr oad_curve Idvmss load_curve Idvmtt load_curve tsr stiffness tss stiffness tst stiffness rsr stiffness rss stiffness rst stiffness tvr damper tvs damper tvt damper rvr damper rvs damper For material type 66 Linear Stiffness Linear Viscous 3d Discret
101. icular node element and element face sets can be annotated in the merge phase You can also see the components of these sets in the merge phase by picking the Pick button and then the Sets button found in the Environment window The tmm command can be used to calculate the mass of each part Be sure to merge the nodes using one of the merging commands such as stp and finally use the Isdyna keyword command to select LS DYNA as the output option and the write command to actually create the input deck for LS DYNA The file produced by TrueGrid is an ASCII file that can be examined or modified using any text editor Some experienced users always inspect the file and modify it instead to rerunning TrueGrid when make easy changes to the model such as changing a material model parameter or the time step For this reason the output file has helpful comments However this file can be very large and it might be easier to modify the TrueGrid session file and rerun TrueGrid One of the comments Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 17 that is automatically written has a time stamp for archiving purposes The title is also helpful for archiving You can insert your own comments with the use of the comment command The readmesh command has alsdyna option so that you can importthe LS DYNA keyword format only elements into TrueGrid This is intended to be used
102. ield_stress etan plastic_hardening_modulus pe pressure_cutoff eps effective_plastic_strain_list es yield_stress_list For material type 11 Steinberg Guinan Thermal Elastoplastic Hydrodynamic g0 shear_modulus_constant sig0 vield_stress_constant beta strain_hardening_law_constant n strain_hardening_exponent gama initial_plastic_strain sigm yield_stress_work_hardening_limit b shear_modulus_pressure_constant bp yield_stress_pressure_constant h energy_coefficient f energy_exponent_coefficient t0 melting_ temperature_constant gam0 thermodynamic_gamma sa thermodynamic_constant ispall spall_model_option where the spall model option can be pl for p gt p_min smax for sigma_max gt sigma_p element spalls and tension hydro for p lt p_min element spalls and tension peut pressure_cutoff a atomic_weight r r_prime ivar cold_compression_option where the cold compression option can be 0 for cold compression polynomial coefficient in eta 1 for cold compression polynomial coefficient in mu E SS Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 58 May 15 2007 TrueGrid Output Manual For LS DYNA ec0 polynomial_coefficient_ec0 ecl polynomial_coefficient_ecl ec2 polynomial_coefficient_ec2 ec3 polynomial_coefficient_ec3 ec4 polynomial_coefficient_ec4 ec5 polynomial_coefficient_ec5 ec6 polynomial_coefficient_ec6 ec7 polynomial_coefficient_ec7 ec8 polynomial_coefficient_ec amp ec9 polynomial_coefficient_ec9 lu
103. ights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 49 for 14 point integration quadratic 8 node brick for 1 point ALE brick for 1 point Eulerian brick for 1 point Eulerian ambient brick for acoustic pressure brick for 1 point crushable foam brick for 1 point ale multi material brick for 1 point w single material and void brick for 1 point corotational crushable foam brick for 8 point acoustic brick for 8 point enhanced strain solid brick for 4 point cohesive element for 4 point cohesive element with offset for use with shells for 1 point Eulerian Navier Stokes for 8 point Eulerian Navier Stokes for mesh free solid formulation for simplified linear brick for simple average smoothing factor for volume weighting smoothing factor for isoparametric smoothing factor for equipotential smoothing factor for start time for smoothing for end time for smoothing for ALE advection factor 114b aleb elb ealb apb crfm alemm lwvoid cflf apb8 ess8 ce4p cedo ens ens8 mT sle afac bfac cfac dfac sts ets aaf Shell element type only shell for shell elements with the following options that can be added to the parameter _list elfor option where the option can be hl bt bciz cU membrane srhl srer ew blev fibt bwc chl for Hughes Lui shell for Belytschko Tsay shell triangular shells triangular shells for Belytschko Tsay membrane for s r Hughes Lui for s r co rotational Hughes
104. in Fit Ramp Time for Loading gl maxwell_constant Maxwell Constant G1 betal decay_constant Decay Constant betal g2 maxwell_constant Maxwell Constant G2 beta2 decay_constant Decay Constant beta2 g3 maxwell_constant Maxwell Constant G3 beta3 decay_constant Decay Constant beta3 g4 maxwell_constant Maxwell Constant G4 beta4 decay_constant Decay Constant beta4 g5 maxwell_constant Maxwell Constant G5 beta5 decay_constant Decay Constant beta5 g6 maxwell_constant Maxwell Constant G6 beta6 decay_constant Decay Constant beta6 Volumetric Option Calculate the Volumetric Relaxation Icidk oad_curve bstartk initial_value Volumetric Load Curve for Least Square Fit Volumetric Starting Beta Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 100 May 15 2007 TrueGrid Output Manual For LS DYNA ntk number_of_terms Number of Terms in Fit trampk time Volumetric Ramp Time for Loading List the Volumetric Relaxation Constants k1 maxwell_constant Maxwell Constant K1 betak1 decay_constant Decay Constant betak1 k2 maxwell_constant Maxwell Constant K2 betak2 decay_constant Decay Constant betak2 k3 maxwell_constant Maxwell Constant K3 betak3 decay_constant Decay Constant betak3 k4 maxwell_constant Maxwell Constant K4 betak4 decay_constant Decay Constant betak4 k5 maxwell_constant Maxwell Constant K5 betak5 decay_constant Decay Constant betak5 k6 maxwell_constant Maxwell Constant K6 betak6 decay_constant Decay Constant bet
105. ir Joad_curve_ load curve defining airbag thickness penmax penetration maximum penetration thkopt flag thickness option where flag can be 0 for default from the control cards 1 for thickness is not considered 2 for thickness is considered but rigid bodies are excluded 3 for thickness is considered including rigid bodies 4 for thickness effects are not included Icfpb oad_curve_ force vs penetration behavior load curve fem flag force calculation method where flag can be 1 for total normal force on surface vs max penetration of any node 2 for normal force on each node vs penetration of node through the surface 3 for normal pressure vs penetration of node into surface 4 for total normal force vs max soft penetration unstf unloading stiffness leberf load_curve_ load curve giving the bending component of the retaining force lenflen oad_curve_ load curve giving the normal force per unit draw bead length as a function of displacement dbd depth draw bead depth selle factor scale factor for load curve nitdb _iterations number of integration points laong the draw bead slvmat material_list automatic slave segment materials sypl slave do not include faces with normal boundary constraints serin slave erosion interior node option sadjmat slave storage is allocated so that eroding contact can occur Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 135 scoufsf fac
106. isson s Ratio for Reinforcement sigy yield stress Initial Yield Stress for Reinforcement etan tangent modulus Tangent Modulus for Reinforcement lcp load curve Load Curve Giving Rate Sensitivity for Principal Material ler load curve Load Curve giving Rate Sensitivity for Reinforcement lambda tabulated values up to 13 Damage Function b3 factor Damage Scale Factor for Triaxial Tensile Path a0y cohesion Cohesion for Yield Limit aly hardening Pressure Hardening for Yield Limit eta tabulated values up to 13 Scale Factor Function b2 factor Damage Scaling Factor for Triaxial Tension Path a2f coefficient Pressure Hardening Coefficient for Failed Material a2y coefficient Pressure Hardening Coefficient for Yield Limit For material type 73 Low Density Viscoelastic Foam e young s modulus Young s Modulus Icid load_curve Load Curve number of nominal stress versus strain te cut off_stress Tension Cut off Stress Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 87 hu factor beta decay_constant damp coefficient shape factor fail flag where flag can be 0 1 bvflag flag where flag can be 0 1 kcon coefficient Viscoelastic Option Hysteretic Unloading Factor Decay Constant to Model Creep in Unloading Viscous Coefficient for Stress Oscillations amp Shock Waves Shape Factor for Unloading Failure Option After Cutoff Stres is Reached Tensile S
107. ive flux limiting is on 1 Advective flux limiting is off divu RMS_divergence_tolerance thetak viscous_terms_time_weighting thetaa advection_terms_time_weighting thetaf body_forces_time_weighting msol momentum_equations_solver_type Copyright 2007 by XYZ Scientific Applications Inc All RightsReserved TrueGrid Output Manual For LS DYNA May 15 2007 103 where momentum_equations_solver_type can be 0 MSOL 20 default 20 Jacobi preconditioned conjugate gradient method 30 Jacobi preconditioned conjugate gradient squared method default when IADVEC 40 maxit maximum_number_of_iterations ichkit convergence_check_interval idiag diagnostic_information_output_toggle ihist convergence_history_file_generation_toggle eps convergence_ criteria ihg hourglass_stabilization_type where hourglass_stabilization_type can be 0 IHG 1 default 1 LS DYNA CFD viscous hourglass stabilization 2 y hourglass stabilization viscous form ehg hourglass_stabilization_multiplier ipsol pressure_solver_type CONTROL_CFD_PRESSURE where the pressure_solver_type can be 0 IPSOL 22 for serial IPSOL 21 for MPP default 10 Sparse direct solver 11 PVS direct solver 20 Jacobi preconditioned conjugate gradient method 21 SSOR preconditioned conjugate gradient method 22 SSOR preconditioned conjugate gradient using the Eisenstat transformation maxitr maximum_number_of_pressure_solver_iterations ichcit convergence_criteria_check_interval idiag ihst epsp convergence_
108. k energy lc1 prefact lc2 coeffic lyp stress lya stress lymax max For material type 12 Isotropic Elastoplastic g shear_modulus sigy vield_stress eh tangent_modulus k bulk_modulus For material type 13 Isotropic Elastoplastic with Failure g shear_modulus sigy vield_stress eh tangent_modulus fs effective_plastic_strain_at_failure fp failure_pressure k bulk_modulus rem element_removal_option where the element removal option can be 0 for failed element eroded after failure 1 for element kept no removal except by delta t dt delta t For material type 14 Soil and Crushable Foam with Failure g shear_modulus ku bulk_unloading_modulus a0 yield_function_constant al yield_function_constant a2 yield_function_constant Copyright 2007 by XYZ Scientific Applications Inc All RightsReserved TrueGrid Output Manual For LS DYNA May 15 2007 59 pe pressure_cutoff ver volumetric_crushing_option where the volumetric crushing option can be 0 for on 1 for loading and unloading paths are the same vs volumetric_strain_list ps pressure_list For material type 15 Johnson Cook Plasticity g shear_modulus a yield_stress b strain_hardening_coefficient n strain_hardening_exponent se strain_rate_dependent_coefficient m temperature_dependence_exponent tm melt_temperature tr room_temperature x0 effective_plastic_strain_rate sh specific_heat ispall spall_model where the spall model option can be pl for p gt p_mi
109. kness for relative spacing of nodes default is equal spacing for double relative spacing of nodes for nodal distribution by a function first element thickness last element thickness das st_thickness last_thickness first and last element thickness Selection for Hughes Liu Beam Thicknesses sthi sthi sthil sthil sthi2 sthi2 tthi tthi tthil 11hi1 for thickness in the y direction for thickness in the y direction at the first end point for thickness in the y direction at the last end point for thickness in the z direction for thickness in the z direction at the first end point Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 35 tthi2 11hi2 for thickness in the z direction at the last end point Selection for Belytschko Schwer beams or Trusses csarea csarea for the cross section area Selection for Belytschko Schwer beams sharea sharea inertia ss tt Irr vold volume lump inertia Selections for Discrete 3D beams cablcid system_ cabarea area caboff offset Selection of the nodal offsets noint roffl roffl soffl soffl toffi toffl roff2 roff2 soff2 soff2 toff2 toff2 Selection of the pin flags Idr1 ldr Ids1 ds Idt1 dt lrr1 rr Irsl1 lre Irtl rt ldr2 dr2 Ids2 ds2 ldt2 dt2 Irr2 rr2 Irs2 rs2 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved shear area inertia moments v
110. lications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA sphmemrn number of neighbors SPH sphform flag where flag can be default formulation renormalization approximation symmetric formulation symmetric reformulation tensor formulation fluid particle formulation 6 fluid particle w renormalization sphstart time sphmaxv velocity Nh YN OS sphcont flag where flag can be 0 particle approximation is defined 1 particle approximation is not calculated sphderiv type where type can be 0 default 1 cubic root formula sphini flag where flag can be 0 bucket sort based algorithm 1 global computation abstat time_interval Airbag statistics file creation timestep DATA BASE abstatbn flag Flag for binary airbag statistics file where the flag can be 0 ascii 1 binary 2 both avsflt time_interval AVS database file creation timestep avsfltbn flag Flag for binary AVS database file where the flag can be 0 ascii 1 binary 2 both bndout rine interval Boundary condition forces and energy file creation timestep bndoutbn flag Flag for binary boundary condition forces and energy file where the flag can be 0 ascii 1 binary Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 113 2 both defgeo time_ interval Deformed geometry file creation timestep defgeobn flag Flag for binary deformed geometry file where the flag can be 0 ascii 1 binary 2 b
111. lobal coordinate system spe constraints in the local coordinate system Ico option where the option can be id ocal_sys_ see lsys df x y z vx vy vz local x axis and in plane vector xe x x coordinate of center of mass for inertia yey y coordinate of center of mass for inertia ZC Z z coordinate of center of mass for inertia tm mass translational mass for inertia nodeid node_ cg nodal point for inertia ixx xx xx component of inertia tensor ixy xy xy component of inertia tensor XZ xz Xz component of inertia tensor Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA iyy yy yy component of inertia tensor iyz yz yz component of inertia tensor izz zz zz component of inertia tensor vtx x initial x translational velocity for inertia vty y initial y translational velocity for inertia vtzz initial z translational velocity for inertia vrx x initial x rotational velocity for inertia vry y initial y rotational velocity for inertia VIZ Z initial z rotational velocity for inertia ircs flag coordinate system flag for inertia where flag can be 0 global inertia tensor 1 local inertia tensor xl x x coordinate of local axis of local inertia tensor yly y coordinate of local axis of local inertia tensor zal z z coordinate of local axis of local inertia tensor xlip x x component of vector in local xy plane of local inertia tensor ylip y y component of vector in local xy plan
112. mb_friction_scale viscous_friction_scale where the first pair of parameters must be specified in order to specify the second pair of parameters If the type is m then options can be fsf Coulomb_friction_scale viscous_friction_scale Remarks This command and its relative sii specify that faces in the mesh are part of a sliding interface You can use these commands to assign a shell or brick face to a sliding interface definition In order to define the properties of the sliding interface first use the command sid Sid defines the properties of the sliding interface that you refer to in si and sii Surfaces from 3D solid brick elements have an obvious orientation pointing outward However this is not the case with sliding interfaces on 2D shell surfaces You must provide information about how to orient them That is the purpose of the orpt command During the node merging process using using stp for example TrueGrid will not merge nodes on opposite sides of a sliding interface Use the merge phase command co with the si option to view the numbered sliding interfaces and their orientation si select nodes for the slave side merge phase si type interface_ boundary options where type can be one of n node_number to select a single node rtxyz to select a node close to a Cartesian point cy rho theta z to select a node close to a cylindrical point Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 13
113. n smax for sigma_max gt sigma_p element spalls and tension hydro for p lt p_min element spalls and tension peut pressure_cutoff iter plastic_strain_iteration where the plastic strain iteration can be fast for fast approximate solution for plastic strain accurate for accurate iterative solution for plastic strain dl failure_parameter d2 failure_parameter d3 failure_parameter d4 failure_parameter d5 failure_parameter e young s_modulus pr poisson s_ratio dtcrit time_step_size vp For material type 16 Pseudo Tensor Concrete Geological model g shear_modulus pr poissons_ratio Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 60 May 15 2007 TrueGrid Output Manual For LS DYNA sigy tensile_cutoff a0 cohesion al st_pressure_hardening a2 2nd_pressure_hardening a0f failed_mat_cohesion alf failed_mat_pressure_hardening b1 damage_scaling_factor r percent_reinforcement emr reinforcement_elastic_modulus prr reinforcement_poissons_ratio sigma0 initial_yield_stress tm tangent_modulus le principle_material_load curve_ ler reinforcement_load_curve_ opt option where the option can be 1 for effective plastic strain curve w tensile cutoff 2 for effective plastic strain curve w max principal stress failure 3 for pressure curve w tensile cutoff eps effective_plastic_strain_list es yield_stress_list For material type 17 Elastoplastic with Oriented Crack e young s_modulus pr poisson s_r
114. n timestep where the flag can be 0 ascii 1 binary 2 both iflagadm flag where the flag can be 0 do not write default 1 write to file d3mnf m_units flag where the flag can be 1 kilogram 2 gram 3 megagram metric ton 4 lbf sec 2 in psi com atible 5 slug 6 pound_mass l_units flag where the flag can be Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 117 1 meter 2 centimeter 3 milimeter 4 inch 5 foot t_units flag where the flag can be 1 second 2 milisecond 3 minute 4 hour d3drlf time options where options can be nrn number of running restart file ibinary flag where flag can be 0 64 bit format 1 32 bit ieee d3dump time form where the form can be nr H number of running restart file d3mean time form options where the form can be ledt n load_curve_id nr H number of running restart file where options can be istats type where type can be 0 do not collect any statistics 1 generate mean quantities 2 generate additional 3nd moments 3 generate additional higher order moments tstart time iavg interval d3part time form options where the form can be ledt n load_curve_id nrn number of running restart file where options can be beam type where type can be 0 discrete spring damper elements are added Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For
115. n factor for material strength in crashfront elements frbt softening fiber tensile strength ycfac compression_strength remainder longitudinal compression strength after compressive matrix dfailt strain failure strain for tensile fiber mode dfaile strain failure strain negative for compressive fiber mode efs effective_failure_strain xe strength longitudinal compressive strength xt strength longitudinal tensile strength a axis ye strength transverse compressive strength yt strength transverse tensile strength b axis se strength shear strength ab plane bt factor weighting factor for shear term in tensile fiber mode Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 79 mangle angle beta list_of_material_angles aopt 3 For material type 55 Composite Damage Model tsay wu matrix failure ex direction longitudinal direction ey dircetion transverse direction ez dircetion normal direction vba poisson s_ratio vea poisson s_ratio veb poisson s_ratio gab shear_modulus gca shear_modulus gbe shear_modulus aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 by cross product with shell normal Shell elements only xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 VX x component aopt 3 vy y component aopt 3 Vz
116. n gradient off 1 for deformation gradient on mangle angle beta list_angle For material type 51 Temperature and Rate Dependent Plasticity e young s_modulus pr poisson s_ratio t initial_temperature he coef heat generation coefficient cl constant c2 constant c3 constant c4 constant c5 constant c6 constant c7 constant c8 constant c9 constant c10 constant c11 constant c12 constant c13 constant c14 constant c15 constant c16 constant c17 constant c18 constant all alphal initial value of state variable 1 al2 alpha2 initial value of state variable 2 al4 alpha4 initial value of state variable 3 al5 alphas initial value of state variable 4 al6 alpha 6 initial value of state variable 5 kap kappa initial value of state variable 6 For material type 52 SANDIA s Damage Model e young s_modulus pr poisson s_ratio Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 TT t initial_temperature he coef heat generation coefficient cl constant c2 constant c3 constant c4 constant c5 constant c6 constant c7 constant c8 constant c9 constant c10 constant c11 constant c12 constant c13 constant c14 constant c15 constant c16 constant c17 constant c18 constant all alphal initial value of state variable 1 al2 alpha2 initial value of state variable 2 al4 alpha4 initial value of state variable 3 al5 alphas initial value of state variable 4 al6
117. n the Merge Phase All of the options are not needed by all output options spwd spot weld property definitions spwd id options where id is a positive integer identifying the spot weld properties definition where an option can be sn nornal_force ss shear_force n normal_force_exponent m shear_force_exponent tf failure_time ep effective_plastic_strain nf _force_vectors tw time_window Remarks This command defines the properties of a spotweld These definitions are needed by the spw command and the associated interactive command spotweld Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 143 vd define a volume vd number box_type xm ym zm xx yx zx option where number is a unique volume number where the box_type box has one of the options adaptive material level for BOX_ADAPTIVE coarsen inout_flag for BOX_COARSEN where the box_type sphbox has the option motion xn yn yz load_curve_ flag where flag can be 0 velocity 1 displacement Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 144 May 15 2007 TrueGrid Output Manual For LS DYNA IV INDEX E B a O O ONO 5 DA A pases 44 46 58 60 69 92 NG oca RAT ote basse 2 6 21 NCCC arch theese ct tested eee A et ete 6 21 ACEC E to usin es ae et 6 21 Accel ration pedia Peral eas 21 22 O A A A 6 21 ACC ias Di De ais 6 21 ACESI AS A EA ESA 6 21 alpha O 45 57
118. nd has an option to form a SPH box The Isdyopts has a number of SPH controlling parameters Use the etd command to control the element types being drawn in the picture The sph option can activate or deactivate graphics for SPH elements The co or condition command with the sph option labels the SPH element with their numbers Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 26 May 15 2007 TrueGrid Output Manual For LS DYNA Data for Post Processing There are a number of options ofthe Isdyopts command to control the data saved in the database by LS DYNA for post processing Use the trp command to define tracer points Use the iss or issi command to identify cross section interfaces that LS DYNA will save in a file You may wish to analyze in greater detail the evolution of certain nodes or elements Use the npb and epb commands referred to as time history blocks respectively to identify areas of the mesh requiring a more detailed accumulation of data by LS DYNA Unsupported Features in LS DYNA The verbatim command can be used for a substitute if TrueGrid does not support a feature in LS DYNA Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 27 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 28 May 15 2007 TrueGrid Output Manual For LS DYNA II LS DYNA Output Examples The following examples were p
119. nd node rz2 constrain spring about the z axis at the second node sddn spd_ specify the material properties orop flag assign an orientation option where flag can be 0 spring damper acts along the axis 1 deflection rotations are measured and force moments applied along the following vector 2 deflection rotations are measured and force moments applied along the projection of the spring damper onto the plane with the following normal Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 142 May 15 2007 TrueGrid Output Manual For LS DYNA 3 deflection rotations are measured and force moments applied along the vector between the following two nodes prflg flag assign a print flag where flag can be 0 forces are printed in DEFORC file 1 forces are not printed in DEFORC file ofsi offset assign an initial offset xco x component assign a x component of the orientation vector yco y component assign a y component of the orientation vector zco z COMponent assign a z component of the orientation vector n3 node_ assign a third node for orientation n4 node_ assign a fourth node for orientation Remarks This command specifies the direction of the spring and the material The nodes defining the ends of the spring can be from a node in the mesh or a point mass see npm and pm The spring command is usually invoked two times to generate a single spring once for each node of the spring This can be done across several parts or i
120. nd specify the number of such elements along with a spacing rule for the intermediate nodes Optional thickness parameters may be specified for the first and last beams when creating multiple beams Intermediate beams will have thicknesses that are interpolated from the end beams You may specify offsets for the first and last nodes and optionally interpolate these offsets to intermediate nodes Constraints which couple the beams to the existing mesh can be eliminated This may be done separately for the first last and intermediate nodes Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 37 bsd global beam cross section definition bsd option_list where option_list depends on the element type selected in the Isdymats command and consists of some of the following Figure 4 Beam Local Coordinate System for LS DYNA Hughes Liu Standard Sections Isd 1 flange_width flange_thickness depth web_thickness W section Isd 2 flange_width flange_thickness depth web_thickness C section lsd 3 flange_width flange_thickness depth web_thickness angle lsd 4 flange_width flange_thickness depth web_thickness T section lsd 5 flange_width flange_thickness depth web_thickness rectangular lsd 6 flange_width flange_thickness depth web_thickness Z section Isd 7 flange_width depth web_thickness trapezoidal sref location where location can be 1 meaning the side where s is 1 Copy
121. ness birth time death time softe flag soft constraint option where flag can be 0 for penalty formulation 1 for soft constraint formulation ssofte factor scale factor for constraint forces of soft constraint option maxpess coordinate srchdp depth ncybs cycles neyup cycles diskoc concon conductance maximum parametric coordinate in segment search search depth in automatic contact number of cycles between bucket sorts number of cycles between contact force updates for penalty formulations disable logic in thickness offset contact to avoid shooting nodes contact conductance Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA radcon conductance radiation conductance gapcs size gap critical size ctofst atbo args where args can be 1 for Slave nodes in contact and which come into contact will permanently stick Tangential motion is inhibited 2 normal_stress shear_stress for Tiebreak is active for nodes which are initially in contact Until failure tangential motion is inhibited 3 normal_stress shear_stress for Same as Ist option but with failure after sticking 4 for Tiebreak is active for nodes which are initially in contact but tangential motion with frictional sliding is permitted 5 plastic_stress load_curve for Tiebreak is active for nodes which are initially in contact Damage is defined by a load curve 6 distance for Tiebreak is active
122. ng this type of boundary condition See the LS DYNA User Manual for details If you use the velocity or rotation command in the control phase then all subsequent parts will be assigned this initial velocity This can be over ridden using the velocity or rotation command within a part Both of these conditions can be over ridden for specific regions of the mesh using the ve or vei commands in the part phase or the ve command in the merge phase Velocities are not accumulative Care is needed when assigning initial velocities so that when two nodes are merged the velocities of those two nodes match Only one of the velocities will be used and if they do not match you may get an unexpect result Usually ifthe velocities of two merged nodes do not match this indicates an error in the model TrueGrid does not protect you from or identify these incompatibilities Condition commands in the Part Phase b nodal constraints bi nodal constraints se ALE Smoothing Constraint nr Non Reflecting Boundary nri Non Reflecting Boundary frb Fixed Prescribed Rotational Boundary Condition frbi Fixed Prescribed Rotational Boundary Condition rb Thermal Radiation Boundary Condition rbi Thermal Radiation Boundary Condition Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 19 vrb Variable Thermal Radiation Boundary Condition vrbi Variable Thermal Radiation Boundary Condition sfb Su
123. nintsld n number of solid element integration points Isavs option flag where option can be Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA 0 node 1 brick 2 beam 3 shell 4 thick shell where flag can be 0 table 1 1 table 2 3 table 3 Ismovie option flag where option can be 0 node 1 brick 2 beam 3 shell 4 thick shell where flag can be 0 table 1 1 table 2 3 table 3 Ismpgs option flag where option can be 0 node 1 brick 2 beam 3 shell 4 thick shell where flag can be 0 table 1 1 table 2 3 table 3 ssstatex id part set id d3thdt time form options where the form can be ledt n load curve id nrn number of running restart file where options can be iform flag where flag can be 0 LS DYNA database format 1 ANSYS database format 2 both LS DYNA and ANSYS database format Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 123 ibinary flag where flag can be 0 64 bit format 1 32 bit ieee neiph n number of integration point variable for solid elements neips H number of integration point variable for shell elements strflg flag where flag can be 0 dump strain tensors off 1 dump strain tensors on sigflg flag where flag can be 1 include stress tensors 2 exclude stress tensors epsflg flag where flag can be 1 include effective
124. nt G3 beta3 decay_constant Decay Constant beta3 g4 maxwell_constant Maxwell Constant G4 beta4 decay_constant Decay Constant beta4 g5 maxwell_constant Maxwell Constant G5 beta5 decay_constant Decay Constant beta5 g6 maxwell_constant Maxwell Constant G6 beta6 decay_constant Decay Constant beta6 Icid2 load_curve Bt Least Square Fit Load Curve sgl specimen_gauge_length Specimen Gauge Length sw specimen_width Specimen Width st specimen_thickness Specimen Thickness data 1 Biaxial Data mul coefficient Ogden Coefficient Mul mu2 coefficient Ogden Coefficient Mu2 mu3 coefficient Ogden Coefficient Mu3 mu coefficient Ogden Coefficient Mu4 mu5 coefficient Ogden Coefficient Mu5 mu6 coefficient Ogden Coefficient Mu6 mu7 coefficient Ogden Coefficient Mu7 mu8 coefficient Ogden Coefficient Mu8 alphal coefficient Ogden Coefficient Alphal alpha2 coefficient Ogden Coefficient Alpha2 alpha3 coefficient Ogden Coefficient Alpha3 alpha4 coefficient Ogden Coefficient Alpha4 alpha5 coefficient Ogden Coefficient Alpha5 alpha6 coefficient Ogden Coefficient Alpha6 alpha7 coefficient Ogden Coefficient Alpha7 alpha8 coefficient Ogden Coefficient Alpha8 g shear_modulus sigf stress_limit bstart value For material type 78 Solid Concrete g shear_modulus Shear Modulus k bulk_modulus Bulk Modulus Iepv load_curve Pressure Volumetric Strain Load Curve lefp load_curve Plastic Strain Pressure Load Curve lerp load_curve Plastic Strain Residual Strength Load
125. nt of offset vector for first end point toffl z z component of offset vector for first end point roff2 x x component of offset vector for last end point soff2 y y component of offset vector for last end point toff2 z z component of offset vector for last end point Selection of the pin flags Idr1 release the x translation constraint at first end point Ids1 release the y translation constraint at first end point Idt1 release the z translation constraint at first end point Irri release the rotation constraint about the x axis at first end point lrs1 release the rotation constraint about the y axis at first end point Irtl release the rotation constraint about the z axis at first end point Idr2 release the x translation constraint at last end point Ids2 release the y translation constraint at last end point Idt2 release the z translation constraint at last end point Irr2 release the rotation constraint about the x axis at last end point Irs2 release the rotation constraint about the y axis at last end point Irt2 release the rotation constraint about the z axis at last end point Idr3 release the x translation constraint at intermediate point Ids3 release the y translation constraint at intermediate point Idt3 release the z translation constraint at intermediate point Irr3 release the rotation constraint about the x axis at intermediate points Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 42 May
126. ntercept x k for volumetric plastic strain for first stress invariant 11 for second stress invariant square root of j2d for response mode number 9 for number of iterations Itype option Cn E Ld HA Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 67 where the formulation option can be 1 for soil or concrete cap surface may contract 2 for rock cap surface does not contract ivec option where the vectorization option can be 0 for vectorized fixed number of iterations 1 for fully iterative t tension_cutoff For material type 26 Orthotropic Crushable Honeycomb e young s_modulus pr poisson s_ratio sigy vield_stress crv relative_volume mu material_viscosity bulk option where the bulk viscosity option 0 for bulk viscosity is not used recommended 1 for bulk viscosity is active amp mu 0 like previous versions of ls dyna sigaa sigma_aa_curve_ sigbb sigma_bb_curve_ sigce sigma_cc_curve_ ssrv shear_stress_curve_ sigab sig_ab_curve_ sigbe sig_bc_curve_ sigca sig_ca_curve_ sre strain rate effects_curve_ ea ea elastic_modulus eb eb elastic_modulus ec ec elastic_modulus gab gab shear_modulus gbc gbc shear_modulus gca gca shear_modulus aopt option where the option can be one of 0 for by nodes 1 for by point and element center 2 for by normal vectors 3 by cross product with shell normal Shell elements only xp x coordinate aop
127. odes within a joint are not merged When forming a rigid body define a material with the Isdymats command and assign this material to a region of the mesh Use the rigbm to merge two rigid body materials to act as one rigid body Springs Dampers and Point Masses Springs and dampers are treated the same in TrueGrid They are only distinguishable by the material properties assigned them Use the spd command to define the properties of the spring or damper Then use the spring command to assign nodes to a numbered spring Alternatively the spdp command can be used in the part phase to create an array of springs between two parts analogous to a contact surface Point masses can be generated in the part or merge phase There are two types of point masses The pm command will assign a mass to an existing node The npm will create a new node and assign it a mass The latter must then be connected either to a spring or beam Temperatures Use the tepro command in the part or merge phase to apply a thermal variable node load You can use the temp command to set a default constant temperature Then use the te and tei commands in the part phase or the te command in the merge phase to change the constant temperature in different regions of the mesh Shared Constraints Use the mpe command to couple a set of nodes This requires that you create a node set first The nset or nseti command can be used in the part phase and the nset command in the merge p
128. olid elements neips n number of integration point variable for shell elements maxint n number of shell integration points strflg flag where flag can be 0 dump strain tensors off 1 dump strain tensors on sigflg flag where flag can be 1 include stress tensors 2 exclude stress tensors epsflg flag Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 121 where flag can be 1 include effective plastic strains 2 exclude effective plastic strains rltflg flag where flag can be 1 include stress resultants 2 exclude stress resultants engflg flag where flag can be 1 include internal energe and thickness 2 exclude internal energe and thickness cmpflg flag where flag can be 0 global 1 local ieverp flag where flag can be 0 more than one state can be on each plotfile 1 only one state can be on each plotfile beamip n number of beam integration points dcomp flag where flag can be 1 off default no rigid body data compression 2 on rigid body data compression active 3 off option 1 but no nodal vel and accel 4 on option 2 but no nodal vel and accel shge flag where flag can be 1 output shell hourglass energy off 2 output shell hourglass energy on stssz flag where flag can be 1 off default 2 on output time step size 3 output mass added mass or time step size n3thdt flag where flag can be 1 write material energy off 2 write material energy on
129. olume of Discrete Beam lumped inertia local coordinate system id number defined by the Isys cable area cable offset for no interior node offset interpolation for x component of offset vector for first end point for y component of offset vector for first end point for z component of offset vector for first end point for x component of offset vector for last end point for y component of offset vector for last end point for z component of offset vector for last end point to release the x translation constraint at first end point to release the y translation constraint at first end point to release the z translation constraint at first end point to release the rotation constraint about the x axis at first end point to release the rotation constraint about the y axis at first end point to release the rotation constraint about the z axis at first end point to release the x translation constraint at first end point to release the y translation constraint at first end point to release the z translation constraint at first end point to release the rotation constraint about the x axis at first end point to release the rotation constraint about the y axis at first end point 36 May 15 2007 TrueGrid Output Manual For LS DYNA Irt2 rt2 to release the rotation constraint about the z axis at first end point Idr3 dr3 to release the x translation constraint at first end point Ids3 ds3 to release the y translation
130. omponent dz z component vx x component vy y component YZ Z component px x component Py y component PZ Z component mopt flag for by nodes for by point and element center for by normal vectors by cross product with shell normal Shell elements only by normal vectors in cylindrical coordinates aopt 1 aopt 1 aopt 1 aopt 2 aopt 2 aopt 2 aopt 2 aopt 2 aopt 2 aopt 3 amp 4 aopt 3 amp 4 aopt 3 amp 4 aopt 4 aopt 4 aopt 4 material axes change flag for bricks where flag can be 1 2 3 tsize step alp stress soft factor fbrt strength xt strength yt strength zt strength xcs strength xts strength default switch material axes a and b switch material axes a and c time step for automatic element deletion nonlinear shear stress parameter softening reduction factor for strength in crash softening of fiber tensile strength long tensile strength a axis bricks trans tensile strength b axis bricks normal tensile strength c axis bricks long compressive strength a axis shells long tensile strength a axis shells Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA yes strength trans compressive strength b axis shells yts strength trans tensile strength b axis shells se strength shear strength ab plane shells mangle angle beta list_of_material_angles aopt 3 For material type 60 Elastic with Visco
131. oth defore time_interval Discrete element file creation timestep deforcbn flag Flag for binary discrete element file where the flag can be 0 ascii 1 binary 2 both elout time_interval Element data file creation timestep eloutbn flag Flag for binary element data file where the flag can be 0 ascii 1 binary 2 both gceout time_interval Geometric contact entities file creation timestep gceoutbn flag Flag for binary rigid geometric contact entities file where the flag can be 0 ascii 1 binary 2 both glstat time_interval Global data file creation timestep glstatbn flag Flag for binary global data file where the flag can be 0 ascii 1 binary 2 both h3out time_ interval h3outbn flag where the flag can be 0 ascii 1 binary 2 both jntfore time_interval Joint force file creation timestep jntforcbn flag Flag for binary joint force file where the flag can be 0 ascii 1 binary Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA 2 both matsum time_ interval matsumbn flag where the flag can be 0 ascii 1 binary 2 both movie time_interval moviebn flag where the flag can be 0 ascii 1 binary 2 both mpgs time_interval mpgsbn flag where the flag can be 0 ascii 1 binary 2 both ncforc time_interval ncforcbn flag where the flag can be 0 ascii 1 binary 2 both nodfor time_interval nodforbn flag where the flag can be 0 ascii 1 binary 2
132. p command forming a set of springs dampers between two surfaces or using the spring command to create a single spring at a time In each case the definition of a spring includes a reference to a material definition spd number Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 139 spdp assigns a face to be half of a set of spring damper pairs spdp region spring damper_ M scale_factor options or spdp region spring damper_ S options where spring damper_ MorS scale_factor options can be dx dy dz rx ry YZ orop flag is the user defined set number indicates Master or Slave is a scaling factor for the set to constrain spring in the x direction to constrain spring in the y direction to constrain spring in the z direction to constrain spring about the x axis to constrain spring about the y axis to constrain spring about the z axis orientation option where flag can be 0 for spring damper acts along the axis 1 for deflection rotations are measured and force moments applied along the following vector 2 for deflection rotations are measured and force moments applied along the projection of the spring damper onto the plane with the following normal prflg flag print flag where flag can be 0 for forces are printed in DEFORC file 1 for forces are not printed in DEFORC file ofsi offset xco x component yco y component z
133. pd flag 0 no change 1 membrane straining causes thickness change theory theory where theory can be 1 Hughes Liu 2 Belytschko Tsay default 3 bciz triangular shell 4 c0 triangular shell 5 Belytschko Tsay membrane 6 s r Hughes Liu 7 s t co rotational Hughes Liu 8 Englemann Whirley shell 9 fully integrated Belytschko Tsay membrane 10 Belytschko Wong Chiang 11 fast co rotational Hughes Liu 12 plane stress x y plane 13 plane strain x y plane 14 axisymmetric solid y axis of symmetry area weighted 15 axisymmetric solid y axis of symmetry volume weighted 16 fully integrated shell element 17 discrete Kirchhoff triangular shell DKT 18 discrete Kirchhoff linear shell either quad or triangular 20 C linear shell element with drilling stiffness bwe option where option can be 1 Belytschko Wong Chiang warping stiffness added 2 Belytschko Tsay default miter option where option can be 1 iterative plasticity with 3 secant iterations default 2 full iterative plasticity 3 radial return noniterative plasticity shproj flag 0 drill projection 1 full projection rotascl scale_factor intgrd rule 0 Gauss integration 1 Lobatto integration lamsht flag 0 do not update shear corrections 1 activate laminated shell theory esort flag 0 no sorting required 1 full sorting CONTROL_SOLID ianpre procedure CONTROL_SOLUTION Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserv
134. prescribed nodal velocities fvs spherical prescribed nodal velocities fvsi spherical prescribed nodal velocities Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 20 May 15 2007 TrueGrid Output Manual For LS DYNA fvv Cartesian variable prescribed nodal velocities fvvi Cartesian variable prescribed nodal velocities fvve cylindrical variable prescribed nodal velocities fvvci cylindrical variable prescribed nodal velocities fvvs spherical variable prescribed nodal velocities fvvsi spherical variable prescribed nodal velocities ace Cartesian prescribed nodal acceleration acci Cartesian prescribed nodal acceleration accc cylindrical prescribed nodal acceleration accci cylindrical prescribed nodal acceleration accs spherical prescribed nodal acceleration accsi spherical prescribed nodal acceleration vacc Cartesian variable prescribed nodal acceleration vacci Cartesian variable prescribed nodal acceleration vaccc cylindrical variable prescribed nodal acceleration vaccci cylindrical variable prescribed nodal acceleration vaccs spherical variable prescribed nodal acceleration vaccsi spherical variable prescribed nodal acceleration fd Cartesian displacement fdi Cartesian displacement fde cylindrical displacement fdci cylindrical displacement fds spherical displacement fdsi spherical displacement frb prescribed rotation frbi prescribed rotation cv Boundary Convection evi Boundary Convection vev Variable
135. ption ssstatex Isdyopts option iform Isdyopts option fsi Isdyopts options gceout gceoutbn Isdyopts options glstat glstatbn Isdyopts options h3out h3outbn epb npb epb epb epb Isdyopts options jntforc jntforcb Isdyopts options matsum matsumbn Isdyopts options movie moviebn Isdyopts options mpgs mpgsbn Isdyopts options neforc neforcbn Isdyopts options nodfor nodforbn Isdyopts options nodfnsid nodfcid nsid cid xtfile Isdyopts options nodfor nodforbn Isdyopts options nodout nodforbn Isdyopts options rbout rbdout rbdoutbn Isdyopts options refore reforcbn Isdyopts options rwforc rwforcbn Isdyopts options sbtout sbtoutbn Isdyopts options secforc secforcb Isdyopts options sleout sleoutbn Isdyopts options spefore speforcb Isdyopts options sphout sphoutbn Isdyopts options iflagspr iflag Isdyopts options ssstat ssstatbn Isdyopts option superpl Isdyopts options swfore swforcbn Isdyopts options tprint tprintbn Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 DATABASE_TRACER DATABASE_TRHIST DEFINE_BOX DEFINE_BOX_ADAPTIVE DEFINE_COORDINATE_SYSTEM DEFINE_COORDINATE_VECTOR DEFINE_CURVE DEFINE_SD_ORIENTATION DEFINE_VECTOR ELEMENT_BEAM ELEMENT_BEAM_THICKNESS ELEMENT_DISCRETE ELEMENT_MASS ELEMENT_SHELL_BETA ELEMENT_SHELL_THICKNESS ELEMENT_SOLID ELEMENT_TSHELL
136. ral Hyperelastic Coefficient C01 General Hyperelastic Coefficient C11 General Hyperelastic Coefficient C20 General Hyperelastic Coefficient C02 For material type 88 Mechanical Threshold Stress siga sigma sigi sigma sigs sigma sig0 sigma hf0 constant hfi constant hf2 constant sigs0 sigma edots0 strain_rate burg magnitude Dislocation Interactions with Long Range Barriers force area Dislocation Interactions with Interstitial Atoms force area Dislocation Interactions with Solute Atoms force area Initial Value of Sigma at Zero Plastic Strain force area Dislocation Generation Material Constant force area HFO Dislocation Generation Material Constant force area HF1 Dislocation Generation Material Constant force area HF2 Saturation Threshold Stress at 0 K force area Reference Strain Rate EDOTSO 1 time Magnitude of Burger s Vector interatomic slip distance distance Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 95 capa constant Material Constant CAPA boltz constant Boltzmann s Constant energy degree sm0 shear_modulus Shear Modulus at Zero Degrees Kelvin sml shear_modulus Shear Modulus Constant force area SM1 sm2 shear_modulus Shear Modulus Constant force area SM2 edot0 strain_rate Reference Strain Rate EDOTO 1 time g0 energy Normalized Activation Energy for Dislocation Dislocation interaction pinv constant Material Con
137. rface Nodes Local Boundary Conditions sfbi Surface Nodes Local Boundary Conditions plane Symmetry symmetry with failure or stone wall plane mdep Initial Momentum Deposition Condition commands in the Merge Phase b nodal constraints on a node set nr Non Reflecting Boundary on a Face Set frb Fixed Prescribed Rotational Boundary Condition rb Thermal Radiation Boundary Condition plane Symmetry symmetry with failure or stone wall plane rigid Define a Rigid Body from a Set of Node The detp command is a global command used to select initial detonation points Loads There are numerous ways to assign loads The list of commands that can be used to assign loads in the part phase includes fe Cartesian concentrated nodal loads fci Cartesian concentrated nodal loads fec cylindrical concentrated nodal loads feci cylindrical concentrated nodal loads fes spherical concentrated nodal loads fesi spherical concentrated nodal loads mom nodal moment about one of the nodal axis in the global coordinate system momi nodal moment about one of the nodal axis in the global coordinate system ndl pressure converted to distributed nodal loads ndli pressure converted to distributed nodal loads pr pressure loads on element faces pri pressure loads on element faces pramp pressure loads on element faces fv Cartesian prescribed nodal velocities fvi Cartesian prescribed nodal velocities fve cylindrical prescribed nodal velocities fvci cylindrical
138. right O 2007 by XYZ Scientific Applications Inc All Rights Reserved 38 May 15 2007 TrueGrid Output Manual For LS DYNA 0 meaning centered 1 meaning the side where s is 1 tref location where location can be 1 meaning the side where t is 1 0 meaning centered 1 meaning the side where t is 1 Hughes Liu Constant Thickness or Diameter sthi thickness s thickness at both ends tthi thickness t thickness at both ends sref location where location can be 1 meaning the side where s is 1 0 meaning centered 1 meaning the side where s is 1 tref location where location can be 1 meaning the side where t is 1 0 meaning centered 1 meaning the side where t is 1 Hughes Liu Variable Thicknesses sthil thickness s thickness at beginning sthi2 thickness s thickness at ending tthil thickness t thickness at beginning tthi2 thickness t thickness at ending sref location where location can be 1 meaning the side where s is 1 0 meaning centered 1 meaning the side where s is 1 tref location where location can be 1 meaning the side where t is 1 0 meaning centered 1 meaning the side where t is 1 Belytschko Schwer beam carea area cross section area iss iss area moment of inertia about s axis itt itt area moment of inertia about t axis Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 39 irr irr area moment of inertia about r axis sarea area shear area of cros
139. ro density tgrle load_curve_ tgmult multiplier he capacity k1 conductivity k2 conductivity k3 conductivity aopt option where the option can be one of 0 by nodes 1 by point and element center 2 by normal vectors xp x coordinate aopt 1 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 129 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 For material type 3 Temperature Dependent Isotropic tro density tgrle load_curve_ tgmult multiplier temp list_temperatures he list_capacities k list_conductivities For material type 4 temperature dependent orthotropic tro density tgrle load_curve_ tgmult multiplier temp list_temperatures he list_capacities k1 list_conductivities k2 list_conductivities k3 list_conductivities aopt option where the option can be one of 0 by nodes 1 by point and element center 2 by normal vectors xp x coordinate aopt 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 For material type 5 Temperature Dependent Isotropic with Phase Change Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 130 May 15 2007 TrueGrid Output Manual For LS DYNA
140. rovided by Mike Burger Example 1 impacting rod 1lsdyna keyword lsdyopts endtim 01 d3plot dtcycl 001 lsdymats 1 3 rho 001 e 1 e7 pr 3 sigy 40000 etan 100 lsdymats 2 3 rho 001 e 1 e7 pr 3 sigy 40000 etan 100 sid 1 lsdsi 24 slvmat l mstmat 2 atbo 2 5000 5000 sid 2 lsdsi 24 slvmat 2 mstmat 3 atbo 2 5000 5000 sid 3 lsdsi 24 slvmat 3 mstmat 4 atbo 2 5000 5000 partmode i G led 100 01 500 sid 1 lsdsi 24 slvmat ljmstmat 2 atbo 2 10000 5000 sd 1 cy 5 1 50001 c Ke TE TE TR EB I TERR RK BRK EK part 1 beam block 16 6 21212 01003 0 2 sA f 4 6 dei 1 2 12 230 4 5 mate 1 mti 3 4 2 mti 5 6 bi 1 0 2 dx 1 dz 1 endpart c KXXXXKXKXKXXKXKXXXXX kk part 2 block 4 4 4 4 6 5 2 5 6 3 sf 1 23 1 2 1 2 sd 1 Per 1 Ded 24 2 a OO T F mate 4 endpart merge write Example 2 cascading balls lsdyna keyword led 1 01 0 025 1 0 030 1 1 1 lsdyopts endtim 2 d3plot dtcycl 0006 ygrav 10800 1 zgrav 3800 1 scft 75 nsbcs 5 para matn 1 while Smatn 1t 153 lsdymats Smatn 1 struct rho 012 e 4 e5 pr 3 para matn Smatn 1 endwhile lsdymats 200 20 shell elfor bt shth 2 rho 01 e 1 e6 pr 3 cmo con 7 7 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 29 lsdymats 201 20 shell elfor bt shth 01 rho 01 e 1 e6 pr 3 cmo con 7 7 v
141. ry 2 both sphout time_interval sphoutbn flag where the flag can be Resultant interface forces file creation timestep Flag for binary for resultant interface forces file Wall forces file creation timestep Flag for binary wall forces file Seat belt file creation timestep Flag for binary seat belt file Cross section forces file creation timestep Flag for binary cross section forces file Sliding interface energy file creation timestep Flag for binary sliding interface energy file SPC reaction forces file creation timestep Flag for binary SPC reaction forces file SPH data file creation timestep Flag for binary SPH data file Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA 0 ascii 1 binary 2 both ssstat time_interval Subsystem data file creation timestep ssstatbn flag Flag for binary subsystem data file where the flag can be 0 ascii 1 binary 2 both swfore time_ interval Nodal constraint reaction forces file creation timestep swforcbn flag Flag for binary nodal constraint reaction forces file where the flag can be 0 ascii 1 binary 2 both tprint time_interval Thermal output file creation timestep tprintbn flag Flag for binary thermal output file creation timestep where the flag can be 0 ascii 1 binary 2 both trhist time_interval Tracer particle history file creation timestep trhistbn flag Flag for binary tracer particle history file creatio
142. s Inc All Rights Reserved 14 May 15 2007 TrueGrid Output Manual For LS DYNA MAT_ORTHOTROPIC_VISCOELASTIC Isdymats MAT_PIECEWISE_LINEAR_PLASTICITY Isdymats MAT_PLASTICITY_WITH_DAMAGE Isdymats MAT_PLASTIC_GREEN NAGHDI_ RATE Isdymats MAT_PLASTIC_KINEMATIC Isdymats AT_POWER_LAW_PLASTICITY Isdymats AT_PSEUDO_TENSOR Isdymats AT_RAMBERG_OSGOOD Isdymats AT_RATE_SENSITIVE_POWERLAW_PLASTICITY Isdymats AT_RESULTANT_PLASTICITY Isdymats AT_RIGID Isdymats AT_SHAPE_MEMORY Isdymats AT_SID_DAMPER_DISCRETE_BEAM Isdymats AT_SOIL_AND_ FOAM Isdymats AT_SOIL_AND_FOAM_FAILURE Isdymats AT_SOIL_CONCRETE Isdymats AT_SPOTWELD Isdymats AT_SPRING ELASTIC Isdymats AT_SPRING_ELASTOPLASTIC Isdymats AT_SPRING_GENERAL NONLINEAR Isdymats AT_SPRING_INELASTIC Isdymats AT_SPRING MAXWELL Isdymats AT_SPRING_MUSCLE Isdymats AT_SPRING_NONLINEAR_ELASTIC Isdymats AT_STEINBERG Isdymats MAT_STEINBERG LUND Isdymats MAT_STRAIN_RATE_DEPENDENT_PLASTICITY Isdymats MAT_TEMPERATURE_DEPENDENT_ORTHOTROPIC SZZ ZZZ EEZ S55 855 55555 52 x x x x x x x x x x x x x x x x x x x x x x x x x x x x Isdymats MAT_TRANSVERSELY_ANISOTROPIC_ELASTIC_PLASTIC Isdymats MAT_USER_DEFINED_MATERIAL_MODELS Isdymats MAT_VISCOELASTIC Isdymats MAT_VISCOLASTIC_FABRIC Isdymats MAT_VISCOUS_FOAM Isdymats MAT_THERMAL_ISOTROPIC Isdythmt MAT_THERMAL_ISOTROPIC_PHASE_CHANGE Isdythmt MAT_THERMAL_ISOTROPIC_TD Isdythmt MAT_THERMAL_ISOTROPIC_TD_LC Isdythmt MAT_THE
143. s section Truss carea area cross section area Belytschko Schwer Full Integration Beam Standart Sections lsd 1 flange_width flange_thickness depth web_thickness W section Isd 2 flange_width flange_thickness depth web_thickness C section lsd 3 flange_width flange_thickness depth web_thickness angle lsd 4 flange_width flange_thickness depth web_thickness T section Isd 5 flange_width flange_thickness depth web_thickness rectangular lsd 6 flange_width flange_thickness depth web_thickness Z section Isd 7 flange_width depth web_thickness trapezoidal Belytschko Schwer Full Integration Beam Constant Thickness or Diameters sthi thickness s thickness or outer diameter at both ends tthi thickness t thickness or inner diameter at both ends Belytschko Schwer Full Integration Beam Variable Thicknesses or Diameters sthil thickness s thickness or outer diameter at beginning sthi2 thickness s thickness or outer diameter at ending tthil thickness t thickness or inner diameter at beginning tthi2 thickness t thickness or inner diameter at ending Belytschko Schwer Tubular Beam Constant Diameter sthi outer_diameter outer diameter at both ends tthi inner_diameter inner diameter at both ends Belytschko Schwer Tubular Beam Variable Diameter sthil first_outer_diameter outer diameter at beginning sthi2 ast_outer_diameter outer diameter at ending tthil first_inner_diameter inner diameter at beginning tthi2 last_inner_diameter innter diameter at ending
144. sity e young s_modulus vise viscosity ca viscosity_coefficient cb viscosity_coefficient cc viscosity_coefficient Idft load_curve defining factor vs time prs ratio_list Poisson s ratio up to 8 values ts temp temperature values up to 8 values vises viscosity_list viscosity values up to 8 values es modulus_list Young s modulus values up to 8 values ctes coef_list coefficient of thermal expansion up to 8 values For material type 61 Maxwell Kelvin Viscoelastic with Maximum Strain k bulk_modulus elastic g0 modulus short time shear modulus ginf modulus long time shear modulus form option formulation option where the option can be 0 Maxwell 1 Kelvin mdec decay kdec relaxation sopt option strain output option where the option can be 0 maximum principal strain 1 maximum magnitude of principal strain 2 maximum effective strain For material type 62 Viscous Foam Ove Arup amp Partners Model el modulud initial Young s modulus nl exponent power law for Young s modulus v2 viscous_coefficient e2 modulud elastic modulus for viscosity n2 exponent power law for viscosity pr poisson s_ratio Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 83 For material type 63 Crushable foam e young s_modulus pr poisson s_ratio Idyv load_curve yield stress vs volumetric strain tcut stress cutoff value for tensile stress visc viscous_coeff
145. sliding interface definition sid slide_ sdsi type options where type can be 1 for Sliding without penalties pl for Symmetric sliding with penalties Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 133 14 15 16 17 18 19 20 21 22 23 24 25 34 35 36 37 38 39 40 41 42 43 44 45 46 47 for Tied for Sliding impact friction for Sliding impact friction no segmentation orientation for Single surface contact for Discrete nodes impacting surface for Discrete nodes impacting surface no segmentation orientation for Discrete nodes tied to surface for Shell edge tied to shell surface for Nodes spot welded to surface for Tiebreak interface for One way treatment of sliding impact friction for One way treatment no segmentation orientation for Automatic single surface with beams and arbitrary orientations for Automatic single surface with beams and arbitrary orientations with extra search for airbag contact for Surface to surface eroding contact for Single surface eroding contact for Node to surface eroding contact for Surface to surface symmetric asymmetric constraint method for Node to surface constraint method Taylor and Flanagan 1989 for Rigid body to rigid body contact with arbitrary force deflection curve for Rigid nodes to rigid body contact with arbitrary force deflection curve for Rigid body to rigid body contact with
146. ss shth3 thickness shth4 thickness shloc location where location can be 1 for top surface 0 for middle surface 1 for bottom surface afac for simple average smoothing factor bfac for volume weighting smoothing factor cfac for isoparametric smoothing factor Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 51 dfac for equipotential smoothing factor efac for equilibrium smoothing facto sts for start time for smoothing ets for end time for smoothing aaf for ale advection factor marea for non structural mass per unit area idof option for shell element types btth and fcth only where option can be 1 for continuous thickness field across element edges 2 for discontinuous thickness field across element edges seltyp type Tor 2d solid element type for element types pstn assa and assv only where type can be 1 for Lagrangian 2 for Eulerian 3 for ALE Beam element types only beam for beam elements with the following options that can be added to the parameter_list elfom option where the option can be hl for Hughes Lui beams bs for Belytschko Schwer beams truss for truss bsi for Belytschko Schwer full integration beam bst for Belytschko Schwer tubular beam disl Discrete 3D Beam spw Spot Weld Beam shear factor userrl integration_rule_ bind required stes standart cross sctions bsd is required quad option where the option can be 1 for a truss
147. ssure based on a function for all nodes that have a zero pressure In most cases the magnitude of the load is specified using a load curve This varies the amplitude of the load with respect to time The arri and associated dist commands can be used to form the arrival time of pressure in the pr pri fl and fli commands Load Curves Load curves are 2D polygonal curves that can be created using the led and fled commands Load curves are typically used to define the relative amplitude of a load with respect to time They can be used to relate any two variables Almost all prescribed loads require a load curve in time so that the amplitude of the load can vary It is best to define a load curve before it is referenced in a load or material model to avoid a warning message When the output file is written if a load curve is referenced but not defined you will also receive a warning message Then a simple load curve will be used in the output file so that a valid LS DYNA file is written It is advised that you correct this by defining the appropriate load curve for the problem Do not rely on the load curve that is automatically generated In some dialogue boxes you might be prompted for a load curve or a set id This is because such commands can be used to define for example a dynamic load for LS DYNA or a static load for another output option that has the option to turn loads on or off depending on the set id Simply ignore the set id portion of the
148. stant PINV qinv constant Material Constant QINV edoti strain_rate Reference Strain Rate EDOTI 1 time GUL energy Normalized Activation Energy for Dislocation Interstitial Interaction pinvi constant Material Constant PINVI qinvi constant Material Constant QINVI edots strain_rate Reference Strain Rate EDOTS 1 time g0s energy Normalized Activation Energy for Dislocation Solute Interaction pinvs constant Material Constant PINVS qinvs constant Material Constant QINVS rhocpr product Product of Density and Specific Heat temprf initial_temperature Initial Element Temperature in Degrees K bulk bulk_modulus Bulk Modulus for Shell Elements alpha constant Material Constant ALPHA eps0 factor Factor to Normalize Strain Rate For material type 90 Acoustic ss speed Sound Speed b factor Damping Factor cf flag Cavitation Flag where flag can be 0 Off 1 On atmos pressure Atmospheric Pressure grav constant Gravitational Acceleration Constant fsp x_coord y_coord z_coord Coordinates of Free Surface point fsn x_dir_cos y_dir_cos z_dir_cos Direction Cosines of Free Surface Normal Vector For material type 96 Brittle Damage e young s_modulus Y oung s Modulus frarf friction Friction of Reinforcement in Section erf young s_modulus Young s Modulus of Reinforcement ysrf yield_stress Yield Stress of Reinforcement Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 96 May 15 2007 TrueGrid Output Manual For LS DYNA
149. stic_s moment_curve_ sfs2 ps2_scale_factor ymsl st_s axis_yield_moment yms2 2nd_s axis_yield_moment Iptl st_plastic_t moment_curve_ sftl Iptl_scale_factor lpt2 2nd_plastic_t moment_curve_ sft2 Ipt2_scale_factor ymtl st_t axis_moment ymt2 2nd_t axis_moment For material type 30 Closed Form Update Plasticity Shell e young s_modulus pr poisson s_ratio sigy vield_stress etan tangent_modulus sigass starting_value sigasf final_value sigsas starting_value sigsaf final_value epsl recovered_strain alpha measure_param ymrt matensite_mod For material type 31 Slightly Compressible Rubber Model pr poisson s_ratio c100 constant c200 constant c300 constant c400 constant c110 constant c210 constant c010 constant c020 constant exct exit_or_continue mxst maximum_strain_limit mnst minimum_strain_limit spgg specimen_guage_ length spwd specimen_width sptk specimen_thickness Idgl load_curve Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA For material type 32 Laminated Glass Model e young s_modulus glass pr poisson s_ratio glass sigy vield_stress glass etan hardening_modulus glass psf strain glass plastic strain at failure pe young s_modlus polymer ppr poisson s_ratio polymer psigy yield_stress polymer petan hardening_modulus polymer imt list list of Os amp 1s for integration points For material type 33 Barl
150. t 1 yp y coordinate aopt 1 Zp z coordinate aopt 1 Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA ax x component aopt 2 ay y component aopt 2 az z component aopt 2 dx x component aopt 2 dy y component aopt 2 dz z component aopt 2 tsf tensile_strain ssf shear_strain For material type 27 Compressible Mooney Rivlin Hyperelastic Rubber pr poisson s_ratio ml specify_constants a first_invariant b second_invariant m2 least_square_fit sgl specimen_gauge_ length sw specimen_width st specimen_thickness Icid ce_vs_change_curve_ For material type 28 Resultant plasticity e young s_modulus pr poisson s_ratio sigy vield_stress etan hardening_modulus For material type 29 Force Limited Resultant Formulation for Beams e young s_modulus pr poisson s_ratio df damping_factor dept for axial collapse force is dependent on the bending moment indept for axial collapse force is not dependent on the bending moment noax for no axial collapse bten option where the beam tension option can be 0 for beam does not yield in tension 1 for beam can yield in tension lpr torsional_moment_curve_ sfr pr_scale_factor ymr torsional_yield_moment asoft softening_factor lps1 st_plastic_s moment_curve_ Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 sfs1 ps1_scale_factor Ips2 2nd_pla
151. t time_step_control CONTROL_THERMAL_TIMESTEP where time_step_control can be 0 fixed time step 1 variable time step tipt parameter 0 0 set to 0 5 Crank Nicholson scheme 1 0 fully implicit itst timestep tmint timestep tmaxt timestep dtempt temperature_change tscpt parameter dtinit time_step_size CONTROL_TIMESTEP seft scale_factor isdo flag where flag can be 0 characteristic length area min of longest side or longest diagonal 1 characteristic length area longest diagonal 2 based on bar wave speed 3 timestep size based on maximum eigenvalue tslimt minimum_time_step dt2ms time_step_size letm load_curve_id erode flag 0 no 1 yes ms1st 0 no 1 yes dt2msf scale_factor iddle load_curve_ID DAMPING_GLOBAL valdmp system_damping_constant stx scale_factor_on_global_x_translational_damping sty scale_factor_on_global_y_translational_damping stz scale_factor_on_global_z_translational_damping srx scale_factor_on_global_x_rotational_damping sry scale_factor_on_global_y_rotational_damping srz scale_factor_on_global_z_rotational_damping dmpid material_id DAMPING_PART_MASS Icid load_curve_id sfle scale_factor_for_load_curve Icflg separate_global_scale_factors_flag idstf part_ID DAMPING_PART_STIFFNESS drayl Rayleigh_damping_coefficient cdamp raction_of_critical_damping DAMPING_RELATIVE frq frequency pidrb material_id_rigid_body psid material_set_id Copyright O 2007 by XYZ Scientific App
152. tion d3mean Isdyopts option d3part Isdyopts option d3plot Isdyopts option d3thdt Isdyopts option intfor Isdyopts option runrsf Isdyopts option xtfile Isdyopts options bndout bndoutbn Isdyopts option cplane Isdyopts option idhead Isdyopts options defgeo defgeobn Isdyopts options deforc deforcbn Isdyopts options elout eloutbn Isdyopts option Ismpgs Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved 10 May 15 2007 TrueGrid Output Manual For LS DYNA DATABASE_EXTENT_BINARY DATABASE_EXTENT_MOVIE DATABASE_EXTENT_MPGS DATABASE_EXTENT_SSSTAT DATABASE_FORMAT DATABASE_FSI DATABASE_GCEOUT DATABASE_GLSTAT DATABASE_H30UT DATABASE_HISTORY_BEAM DATABASE_HISTORY_NODE DATABASE_HISTORY_SHELL DATABASE_HISTORY_SOLID DATABASE_HISTORY_TSHELL DATABASE_JNTFORC DATABASE_MATSUM DATABASE_MOVIE DATABASE_MPGS DATABASE_NCFORC DATABASE_NODFRC DATABASE_NODAL_FORCE_GROUP DATABASE_NODFOR DATABASE_NODOUT DATABASE_RBDOUT DATABASE_RCFORC DATABASE_RWFORC DATABASE_SBTOUT DATABASE_SECFORC DATABASE_SLEOUT DATABASE_SPCFORC DATABASE_SPHOUT DATABASE_SPRING_FORWARD DATABASE_SSSTAT DATABASE_SUPERPLASTIC_FORMING DATABASE_SWFORC DATABASE_TPRINT Isdyopts options neiph neips maxint strflg sigflg epsflg rltflg engflg cmpflg ieverp beamip dcomp shge stssz n3thdt nintsld Isdyopts option Ismovie Isdyopts option Ismpgs Isdyopts o
153. to translate a LS DYNA mesh nodes and elements only into another format This feature does not replace the session file because the block structure of the mesh cannot be reconstructed This also means there are no block boundary interfaces bb command to utilize If there is a block structure underlying the mesh you can form a block boundary interface using the mbb command but this can be tedious Sliding or Contact Surfaces To form a contact surface use the sid command to define the surface type Some types have only one side Some are formed from faces of bricks or shells Others are formed partially from nodes Alternatively you can select materials equivalent to LS DYNA parts to identify the LS DYNA parts that form either or both sides of an automatic contact Be sure to choose a LS DYNA type contact surface since other types will not be recognized when TrueGrid writes the output file While in the part phase use the si or sii commands to select faces of that part for inclusion in the surface definition If the face is from a shell element be sure to use the orpt orientation command prior to issuing the si or sii command so that the orientation of the face is towards the opposing face in the sliding surface If you are using part replication Irep grep or pslv then you may want to use the Isii or the gsii to increment the sliding interface command for each replication You must use the sid command for each sliding surface that is r
154. tor svfsf factor coulomb friction scale factor viscous friction scale factor snffs stress_or_force slave normal stress at failure ssffs stress_or_force slave shear stress at failure senf exponent sesf exponent mstmat material_list mypl merin madjmat meoufsf factor mvfsf factor mnffs stress_or_force msffs stress_or_force menf exponent mesf exponent scoef coefficient dcoef coefficient decay coefficient incslv incmst sfsps factor sfmps factor vfcoef coefficient thss thickness thms thickness sthss factor sthms factor btime time dtime time slave exponent for normal force slave exponent for shear force automatic master segment materials master do not include faces with normal boundary constraints master erosion interior node option master storage is allocated so that eroding contact can occur master normal stress at failure master shear stress at failure master exponent for normal force master exponent for shear force static coefficient of friction dynamic coefficient of friction dynamic decay coefficient include slave side in printed and binary force interface file include master side in printed and binary force interface file scale factor on default slave penalty stiffness scale factor on default master penalty stiffness coefficient for viscous friction optional thickness for slave surface optional thickness for master surface scale factor for slave surface thickness scale factor for master surface thick
155. tress remains at Cut off Value Tensile Stress is reset to zero Bulk Viscosity Activation Flag No Bulk Viscosity Recommended Bulk Viscosity Active Stiffness Coefficient for Contact Interface Stiffness Calculate the Viscoelastic Constants Icid2 load_curve bstart initial_value Load Curve if Constants beta t are determined via Least Squares Fit Starting Beta nt number_of_terms Number of Terms in the Fit tramp time Optional Ramp Time for Loading List the Viscoelastic Constants gl maxwell_constant Maxwell Constant G1 betal decay_constant Decay Constant betal g2 maxwell_constant Maxwell Constant G2 beta2 decay_constant Decay Constant beta2 g3 maxwell_constant Maxwell Constant G3 beta3 decay_constant Decay Constant beta3 g4 maxwell_constant Maxwell Constant G4 beta4 decay_constant Decay Constant beta4 g5 maxwell_constant Maxwell Constant G5 beta5 decay_constant Decay Constant beta5 g6 maxwell_constant Maxwell Constant G6 beta6 decay_constant Decay Constant beta6 For material type 75 Bikhu Dubois Foam Model e young s_modulus Id1 load curve pressure for plastic yielding vs volumetric strain Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 88 May 15 2007 TrueGrid Output Manual For LS DYNA 1d2 load curve uniaxial yield stress vs volumetric strain vise viscous_coefficient pcut pressure_cutoff vpcut cutoff teut cutoff vtcut cutoff Icrate load_curve pcoef coeff For materi
156. tro density tgrle oad_curve_ tgmult multiplier temp list_temperatures he list_capacities k list_conductivities solt temperature liqt temerature lh atent_heat For material type 6 Temperature Dependent Isotropic by Load Curves tro density tgrle load_curve_ tgmult multiplier hele load_curve_ tele load_curve_ offset add offset to numbered entities in the output offset type offset where type can be nodes node numbers bricks brick elements shells shell elements beams beam elements tshells thick shells nsetoff node sets fsetoff face sets if esetoff element sets partoff parts lersyoff local coordinate systems Remarks This command is useful if you want to create partial LS DYNA input files By applying the proper offsets to the different entities then you can easily combine several files for LS DYNA by simply concatenating the files or using the include feature in LS DYNA This command is found in the Elements menus Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 131 si assign sliding interface to region part phase si region sliding_ type options where sliding_ reference number for the interface type m for master and s for slave options this depends on the type If the type is s then the options can be normal_failure_stress_or_force shear_failure_stress_or_force exponent_for_normal_force exponent_for_shear_force fsf Coulo
157. ultants at plan points amp fiber lengths 3 for resultants stresses at all points amp fiber lengths Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 53 quad integration_rule_ where the integration_rule_ can be n positive for the number of points using the trapezoidal rule 0 for Gauss quadrature n negative of the user specified rule number see sind Smooth Particle Hydro SPH element types only sph for sph elements with the following options that can be added to the parameter _list cslh constant smoothing length constant hmin min minimum smoothing length factor hmax max maximum smoothing length factor sphini length initial smoothing length sphdeath time stopping time for sph sphstart time starting time for sph hxeslh length smoothing length constant in x hycslh length smoothing length constant in y hzeslh length smoothing length constant in z hxini ength initial smoothing length in x hyini ength initial smoothing length in y hzini ength initial smoothing length in z sphuser user option The remainder of options in the parameter_list are specific to the selected material_type For material type 1 struct Elastic e young s_modulus da axial_damping_ factor db bending_damping_ factor pr poisson s_ratio For material type 1 fluid Elastic Fluid k bulk_modulus ve tensor_viscosity_coefficient cp cavitation_pressure pr poisson s_ratio For m
158. us damper along t axis rotational viscous damper about r axis rotational viscous damper about s axis Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 85 rvt damper Idyr load_curve Idys load_curve Idyt load_curve Idmr oad_curve Idms oad_curve Idmt oad_curve fr para fs para ft para mr para ms para mt para ur para us para ut para tr para ts para tt para rotational viscous damper about t axis yield force vs plastic displacement r axis yield force vs plastic displacement s axis yield force vs plastic displacement t axis yield moment vs plastic rotation r axis yield moment vs plastic rotation s axis yield moment vs plastic rotation t axis fr fail optional parameter fs fail optional parameter ft fail optional parameter mr fail optional parameter ms fail optional parameter mt fail optional parameter ur fail optional parameter us fail optional parameter ut fail optional parameter thetar fail optional parameter thetas fail optional parameter thetaj fail optional parameter For material type 69 Side Impact Dummy Damper sid Damper st st cd d crr ch h ck k CC C ckk k cds list crs list rho rho cl cl c2 c2 ldfd load_curve lddd load_curve d0 s0 c3 c3 sf scale_factor Ivde coefficient piston stroke piston diameter default orifice radius orifice controller position damping constant
159. where flag can be 0 all data printed 1 nodal printing is suppressed 2 element printing is suppressed 3 both node and element printing is suppressed nrefup flag 0 no update 1 update iaccop flag 0 no average 1 averaged between output intervals ofifs interval ipnint flag 0 print 100 elements with smallest time steps 1 governing time steps printed ikedit interval iflush number_of_time_steps iprtf print_flag where print_flag can be 0 write part data into both MATSUM and RBDOUT 1 write data into RBDOUT only 2 write data into MATSUM file only 3 do not write data into RBDOUT and MATSUM nepu number_of_cpus CONTROL_PARALL EL numrhs number 0 same as ncpu 1 write only one iconst flag 1 on 2 off for a faster solution ipllace flag 0 off 1 on remin minimum_edge_length CONTROL_REMESHING remax maximum_edge_length Imf flag 0 explicit penalty 1 implicit with Lagrange multipliers CONTROL_RIGID jntf stiffness 0 incremental update 1 total formulation orthmd flag 0 true 1 false partm flag 0 true 1 false sparse flag 0 false 1 true wrpang degrees CONTROL_SHELL itrist flag 0 no sorting required 1 full sorting irnxx option where option can be Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 109 2 unique nodal fibers 1 compute normals each cycle 0 default set to 1 1 compute on restarts n compute every n cycles istu
160. where type can be 1 standard ls dyna3d 2 flanagan belytschko integration 3 flanagan belytschko integration with exact volume 4 stiffness form of type 2 flanagan belytschko 5 stiffness form of type 3 flanagan belytschko 6 Belytschko Bindeman 1993 8 Applicable to the type 16 fully integrated shell element qh coefficient n36flg iautf time_step_control_flag CONTROL_IMPLICIT_AUTO where time_step_control_flag can be 0 constant time step size PDA RAS Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved 106 May 15 2007 TrueGrid Output Manual For LS DYNA 1 automatically adjusted time step size iteropt optimum_iteration_count iterwin allowable_iteration_window dtmini minimum_allowable_time_step dtmaxi maximum_allowable_time_step inal flag CONTROL_IMPLICIT_DYNAMICS where flag can be 0 static 1 dynamic Newmark 2 dynamic modal newgam constant newbet constant neig number_of_eigenvalues CONTROL_IMPLICIT_EIGENVALUE center frequency Iflag flag 0 left end point is infinity 1 left end point is Iftend Iftend endpoint rflag flag 0 right end point is infinity 1 right end point is rhtend rhtend endpoint eigmth flag 1 subspace iteration 2 block shift and Lanczos shfsel scale imflag flag CONTROL_IMPLICIT_GENERAL where flag can be 0 explicit 1 implicit 2 explicit amp implicit dt0 initial_implicit_time_step imform flag 1 fully integrated formulation 2 original formulation nsbs
161. xis orientation in the j direction k second axis orientation in the k direction sd surface_ second axis orientation in the normal to the surface Y xn yn zn second axis orientation by the vector none cross_section is the cross section definition number assigned with bsd option can be reverse the order of the nodes is the reverse of the default si sid_ Sliding Interface Number Selections for Discrete 3D Beam vold volume volume of Discrete Beam lump inertia lumped inertia cablcid system_ local coordinate system id number defined by the Isys cabarea area cable area Copyright 2007 by XYZ Scientific Applications Inc All Rights Reserved TrueGrid Output Manual For LS DYNA May 15 2007 41 caboff offset cable offset Selection for Belytschko Schwer beams or Trusses csarea area cross section area Selection for Belytschko Schwer beams sharea area shear area of cross section inertia iss itt irr cross section moments of inertia Selection for Hughes Liu Beam and Spot Weld Beam Thicknesses sthi sthi thickness in the y direction sthil sthil thickness in the y direction at the first end point sthi2 sthi2 thickness in the y direction at the last end point tthi thi thickness in the z direction tthil thil thickness in the z direction at the first end point tthi2 tthi2 thickness in the z direction at the last end point Selection of the nodal offsets roffl x x component of offset vector for first end point soffl y y compone
162. y y component aopt 3 Vz z component aopt 3 mangle angle beta list_of_material_angles aopt 3 ea ea orthotropic_list eb eb orthotropic_list ec ec orthotropic_list vba vba orthotropic_list vea vca orthotropic_list veb vcb orthotropic_list aa alpha_a orthotropic_list ab alpha_b orthotropic_list ac alpha_c orthotropic_list gab gab orthotropic_list gbc gbc orthotropic_list Copyright O 2007 by XYZ Scientific Applications Inc All Rights Reserved May 15 2007 TrueGrid Output Manual For LS DYNA gca gca orthotropic_list t temperatures_list For material type 24 Rate Dependent Tabular Isotropic Plasticity e young s_modulus pr poisson s_ratio sigy vield_stress et tangent_modulus efp effective_strain_failure dtcrit time_step_size srp p strain_rate sre c strain_rate less effective_stress_curve_ le yield_stress_curve_ vp rate_effect_formulation eps effective_strain_list es yield_stress_list vp type For material type 25 Inviscid Two Invariant Geologic Cap k initial_bulk_modulus g initial_shear_modulus alpha failure_envelope theta linear_failure_envelope gamma exponential_failure_envelope beta exponent_failure_envelope r axis_ratio d hardening_law_exponent w hardening_law_coefficient x0 hardening_law_parameter cbar kinematic_hardening_coefficient n kinematic_hardening_ parameter nplot option where the plot data base option can be for hardening variable k for cap 11 axis i

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TrueGrid ® Output Manual for LS-DYNA