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1. 288 288 0 024 0 04 3 8e 005 NR P nd master dofs 615 0 029 0 038 4 2e 005 NR nt needles BCs O 0 026 0 034 4 1e 005 NR Superfluous contradictory BCs 0 0 55 0 8 LS uperfluous contradictory BCs 0 0 023 0 032 3 3e 005 NR aired 76316 76316 0 91 0 8 LS or pure data only 12864 12864 0 023 0 028 3 4e 005 NR data chunks per row 4 14236 4 14236 0 94 0 8 LS ks dimension 1 34786 1 34786 0 024 0 024 3 3e 005 NR Copyright Cervenka Consulting 2003 2009 i 0 027 0 029 3 9e 005 NR e mail ce 0 032 0 032 5 1e 005 NR Please cory file statistics SkyLin 0 031 0 031 5 6e 005 NR Fr gt lt m j Jii I I 3DBea GEE Read Assembling Stiffness Internal Forces anana Group 105 Elem 88 Time 35 0000 14 OVR Figure 161 The execution of the Draw Crack Option Draw Crack Options Eg EN Parameter input s Averaged at element Averaged at element CO At element s IPs Max crack level 3 Filter For cracks to be drawn Min crack width 0 0001 ae Width multiplier 5 Min crack width Style Width multiplier Shift outwards Cancel Figure 162 The setting of the Draw crack option 113 Tutorial AtenaWin M CCStructures Static analysis CRACK_WIDTH at location NODES for item COD1 File Edit View Window s Input Output Draw Properties Application Help ax HSeEBEb cUC8 B 553530 sd HOM HB DO 5 9 Ws THR
2. Create a 3 Move point Lines gt Lines operations gt Polylines Swap are Polyline gt Volumes Near point SurfMesh Parameter Edit NURBS gt Convert to NURBS gt Simplify NURBS Hole NURBS suface KIN Collapse gt Uncollapse gt b AZ See Cx x HN EA Layer Touse v plates On Off Color Intersection d j i a n E RB Sel Surface boolean op Yolume boolean op gt New Delete Rename alphabetic To back v Send To v Close Pick LEFTMOUSE to desplace view ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to desplace view ESC to quit Command Figure 82 The executing of the division command After the execution of the divide command the cursor will change into this shape and the surface required for dividing should be selected Once the surface 1s selected the dialog window will appear on the screen see Figure 83 This dialog asks for the direction along which the surface should be divided There are U and V direction and in the graphical area it 1s possible to see green axis representing U and V direction In this case USense should be chosen Once the USense button 1s chosen the program asks for the number of the divisions Bottom surface should be divided into two parts see Figure 84 57 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors 8 GiD version s The plate layer has to
3. GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED LBK IGS Er 7 IS First th s point Then move the mouse and 4 select the next line point f Enter points to define line ESC to leave 0 7603 Pick an existing point y 0 5588 E z 0 Command BB Figure 24 The creation of the top line to finalize the rectangle for the bottom surface of the top plate 21 Tutorial After connecting lines into a rectangle the surface should be created For that it s useful to use an automatic surface definition with the command Geometry Create NURBS surface Automatic When this automatic method is used the program asks for the number of bounding lines see Figure 25 After definition of this number the program automatically creates all possible surfaces with the given number of bounding lines Enter value window Enter Number of lines Parameter Input Enter Number of lines 4 Cancel Figure 25 The definition of number of bounding lines After clicking on the OK button the required surface is created see Figure 26 Then the button Cancel should be selected to leave this function GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help Dil version s The pink rectangle of the new surface Enter number of lines al 0 7603 Leaving NurbSurface creation No changes F y 0 5588 z 0 Command Figure 26 The surface c
4. Command GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors C Name 1 0 FJU E B beam Ej n bars d m v plates 5 m Layer To use v plates On Off Color g n r m Sel New Delete Rename alphabetic To back v Send To v Close 1 Lines divided Can continue Select lines to divide Command Figure 97 The divided line 67 Tutorial Now the necessary point for the displacement condition is already created Boundary conditions automatically belong to the same layer as the geometry onto which they are assigned Therefore it 1s not necessary to control which layer 1s activated The condition command can be executed by the icon P orby Data Conditions in the main menu The displacement condition definition is depicted in the Figure 98 Conditions y E Displacement for Paint USE decimal point DO NOT use commal l The displacement condition is applied on the point therefore this icon should be selected By clicking on the arrow the choice of available conditions will be displayed The Displacement 0 0 i option Displacement for Point has to Y Displacement 0 0 be selected Displacement 0 0001 The displacement is in vertical direction Therefore Z Displacement 0 0001 m should be defined By this button the displacement can be assigned to the geometry see Figure 99 Assign Entities Draw Unassign Close Figure
5. Delete gt nd Fi Move point I Sg tum Divide Lines Num Divisions af Lines operations Polylines Near point Ta UF Swap are Surfaces Parameter E Polyline Volumes Relative Length p SurfMesh Length a Edit NURBS N J Convert to NURBS gt eT Simplify NURBS PT C Hole NURBS surface 2e 7 ie Collapse Layer Touse v plates On Off Color Intersection nr Surface boolean op A H E r Sel Uncollapse Volume boolean op New Delete Rename alphabetic To back v Send To v Close Layer beam is OFF Leaving function No changes Command Figure 94 The dividing of the line Enter value window Cancel Figure 95 The enter value window Parameter input Enter number of divisions ATENA GiD 66 After the specification of the required division the button OK has to be pressed and the appropriate line should be selected see Figure 96 The line selection is completed by pressing the ESC key has see Figure 97 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors SEE Files View Geometry Utilities Data Mesh Calculate ATENA Help ed eo 22 ay mi Qo x plates Z pil Serion 9 bars v plates 9 Layer To use v plates On Off Color New Delete Rename alphabetic To back Send To v Close Select lines to divide Added 1 new lines to the selection Enter more lines ESC to leave
6. GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED View Geometry Utilities Data Mesh Calculate ATENA Help Ov 9 5555x2 a9 5 49 amp Sie Dil version s The copied line Entities type Lines Transformation Translation z First point Num x 0 0 y 0 0 e z 0 0 Second point Num x 0 100 Il y 0 0 e z 00 Duplicate entities Do extrude No Create contacts v Maintain layers Multiple copies 1 Select Cancel Selected 1 Lines 0 7603 Geometry has 1 new lines 2 new points Leaving y 0 5598 T1 2 0 Command HH Figure 22 The repeated copy operation to create the second line ATENA GiD 20 The next step is to connect these newly copied lines into a rectangle This can be done by creation of new lines using the command Geometry Create Straight line from the main menu or by clicking the icon N Also the Join function should be used Ctrl a see chapter 3 2 1 The connection of lines is depicted in the Figure 23 and the Figure 24 GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help First this point should be selected Make sure that the command Join Ctrl a is activated otherwise a new point may be created Then move the mouse and select the next line point E LA Enter points to define line ESC to leave 0 7603 Pick an existing point y 0 5588 I z 0 Command
7. The selection of this material and selection of the New SOLID Concrete icon are depicted in the Figure 53 After the selection of the New SOLID Concrete icon the new window for the definition of the new material name will appear see Figure 54 Here the name Beam should be written and OK button is used to complete this command ATENA GiD 40 SOLID Concrete Concrete EL CS 2X SBETA Material Safety Format Design l The pull down menu with options of predefined materials will appear after the clicking on the arrow In this case the Concrete EC2 should be chosen 2 This icon starts the creation of the new material Once this icon is selected the New SOLID Concrete window appear see Figure 54 Assign Unassign Exchange Figure 53 Description of the new material creation Mew sOLID Concrete Enter new sOLID Concrete name Cancel Figure 54 The window for the definition of the New SOLID Concrete Parameter input Enter new SOLID Concrete name Beam When the new material is created its name will be offered in the pull down menu see Figure 55 This new material should be selected and then the its parameters can be changed 41 Tutorial SOLID Concrete Reinforced Concrete Microplane M4 SBETA Material Beam Newly created material named Beam Assign Unassign Exchange Figure 55 The selection of the New SOLID Concrete material The parameters of the new material Beam are predefined according t
8. Parameter input Enter number of cells to assign to lines Now all necessary divisions are defined and the command is completed by selecting the Close button in the Enter value window above GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam intervals Files View Geometry Utilities Data Mesh Calculate ATENA Help JL Sen 18210 Added 1 new lines to the selection Enter more lines ESC to leave Added 1 new lines to the selection Enter more lines ESC to leave Command f Figure 130 The selection of the bottom right edge lines After the structured mesh definition the mesh can be generated It is done by command Mesh Generate mesh or it can be activated directly by pressing the key Ctrl and g at the same time After that the enter value window will appear see Figure 131 Here it is necessary to define the default element size for the volumes that are not mesh using the structured option There the value 0 065 can be left and the button Ok can be pressed 89 Tutorial The generation of the mesh will start and then the list of elements will appear The number of elements can be checked n that list see Figure 132 It s necessary that the total number of elements is below 300 This limit is necessary only for the demo version of ATENA If a full version of ATENA is available it is recommended to use more elements The generation of the mesh is finished by selecting button Ok see Figure 133 Enter value
9. The steel plates are assigned into the plate layer Therefore the plate layer should be activated and displayed The beam and bar layers can be hidden It is also recommended to zoom at the top plate see Figure 89 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help bill Versions Version 9 Layer To use v plates On Off Color a n r r Sel New Delete Rename alphabetic To back v Send To v Close Added 1 new lines to the selection Enter more lines ESC to leave Deleted 1 lines Leaving deleting function Command Figure 89 The activated plate layer and zoom view of the top plate ATENA GiD 62 The top surface will be divided using the command from the main menu Geometry Edit Divide Surfaces Num Division or by selecting Divide surface icon TA see Figure 90 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Fies view Deiner Utilities Data Mesh Calculate ATENA Help Og Ye seomety BIS Spa S 49 e Create gt Delete gt o9 Fi 2 Move point oa Lines Lines operations Polylines z Swap arc Polyline Near point SurfMesh Parameter Edit NURBS Convert to NLIRBS Simplify NURBS Hole NURBS surface Collapse Uncollapse P amp 6 Z x n Oe A in An z gt ES Seles iN ac bil Version 9 EC Name 11 0 EIU Tr B r n beam 2 bars S
10. 4 MN Draw undeformed wire Draw mode Automatic Ni 000035795 Data _Default_ v Stretch to fit window Yes 0 00026846 Draw legend Yes DOCOLESS 9486e 005 u Scale Light v Yes E Type Absolute O Relative Hidden line removal v Yes vo 9 Value 01 Cache output 0n a E Black on white v Yes Y o0 3i E t i Yes z E a Rendering color and scale Drew iso san 0 Draw all nodes Dyes Max Ux 000025 T Mnd Rigid body BCs Yes Mur Uy 728 006 Min U_y 3 1e 005 wid res 1 Max U_2 000078 Min U_s 00028 E Mk Font size 12 Meck 13 E De Mnx 0 BEI Quadratics size 12 MET nuo Number of subintervals 2 MmY 0 M Z 035 Apply eu ok Max al 000072 Mm Wb 0 Time 34 0000 V 4 14 2793 License 4001 M IP 3DBeam inp EX IP 3bBeam out X E 3DBeam msg OX BCs statistics before after elimination 0 0033 0 044 0 035 0 00014 NR 288 288 0 0032 0 046 0 052 0 00015 NR nd master dofs 615 0 0032 0 039 0 046 0 00012 NR nt needles BCs O 0 81 0 8 LS superfluous contradictory BCs 0 0 0026 0 03 0 029 7 9e 005 NR uperfluous contradictory BCs O 0 0024 0 41 0 7 0 001 NR ired 76316 76316 0 0039 0 13 0 18 0 00051 NR or pure data only 12864 12864 0 0031 0 064 0 11 0 0002 NR data chunks per row 4 14236 4 14236 0 0019 0 041 0 038 7 9e 005 NR ks dimension 1 34786 1 34786 0 0029 0 23 0 41 0 00067 NR Copyright Cervenka Consulting 2003 2009 i 0 0024 0 078 0 12 0 00019
11. Accept Close Figure 116 The contact conditions Parameter input Interval Multiplier 40 Number of Load Steps 50 81 Tutorial 3 6 Mesh generation The generation of a finite element mesh is the last step in pre processing Because it should be possible to create this tutorial example in demo version of ATENA and GiD it s necessary to use a rather coarse mesh The demo version of ATENA is limited to 300 elements so the generated model should satisfy this limit The easiest way of the mesh definition is to use automatic generation Program will automatically define the smallest suitable mesh This command can be executed by selecting Mesh Generate mesh see Figure 117 or this option can be activated directly by pressing the key Ctrl and g at the same time Then the program asks for the definition of the size of the generated mesh see Figure 118 The default size of the mesh can be used By the selecting Ok button the mesh will be generated and the list of elements and nodes of the mesh will appear see Figure 119 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 12 8 2009 Files View Geometry Utilities Data WIESE Calculate ATENA Help Unstructured 2 ppum Structured SemiStructured Cartesian Boundary layer Quadratic elements Element type Mesh criteria Reset mesh data Draw Command Enter size of elements to be generated Leaving generation Figure 117 The Generate mesh command AT
12. IMPERFECTIONS PERFORMANCE INDE PHYSICAL PARAMETERS SOFT HARD PARAMETER CURRENT NODAL COORDINATES REFERENCE NODAL COORDINATES Close Figure 171 The selection of the data which should be available for the post processing For example the FRACTURE STRAIN can be chosen The definition of post data is completed by selecting Accept button see Figure 172 Then the button Close can be pressed and the GiD will switch to post process automatically But there in the post process the data from AtenaWin has to be imported again s It 1s done by the clicking on the AtenaWin icon Then the FRACTURE STRAIN can be found in the options for the post processing see Figure 173 to obtain this figure the 35 step has to be selected again 119 Tutorial Post data General Load and Forces tram Stress ELEM INIT STRAIN INCA EQ PLASTIC STRAIN ETERNAL CABLE SLIPS FRACTURE STRAIN MAXIMAL FRACT STRAIN PLASTIC STRAIN PRINCIPAL FRACTURE STRAIN PRINCIPAL PLASTIC STRAIN PRINCIPAL SHELL MEMBRANE mT ATI Sm MI GiD AtenaV4 Static 2D and 3D Interface Project AtenaResults SEE S No Results No Graphs ersion Default Analysis Step Contour Fill CRACK WIDTH Smooth Contour Fill DISPLACEMEN Contour Lines g FRACTURE STRAIN epsfsx Contour Ranges STRAIN eps f yy Show Min Max STRESS eps f zz Display Vectors gamma f xy EHE o ie x Pes IM I T EN GENS ES IO ED HI
13. 1 Vertical value Name Load REACTIONS Factor 1 105 Tutorial AtenaWin M CCStructures Static analysis Set 2 Untitled graph File Edit view Wwindow s Input Output Draw Properties Application Help Bos m3 4 09 9 xd XM E BB 8 B Oli g amp NC j oo We Le BE 9 A wisst eB E Set 1 ConvergenceMonitor PE ED Geometry a olx Convergence criteria 1 4 1 0000000 o u v vo amp v ac 0 0598692 000025 0 00076 Legend 5 9e 006 0 0417912 360 005 L D E 08067 00032 13 b gt re 0 0237132 EP 3DBeam PEE fi ji JE 0 0056352 i 0 0000825 0 0008191 0 0015558 0 0022924 0 0030230 JE ji ji XXX X XXX XX 0 045 7 4e 005 NR ff v 2 statistics SkyLin v 0 032 5 4e 005 NR Read 4RC Length Line Search Iteration In progress Time 37 6 OYR Figure 150 The L D diagram showing stage of the running analysis The graph parameters were defined Now the graph properties should be set It 1s done by the selecting of the Draw properties icon After that the graph property window will appear and properties can be described The name of the graph should be L D name of the horizontal value should be Displacement and name of the vertical value should be Load It can be useful to change scale of axis in this case it has been chosen to change scale on horizontal value to 10 and on vertical axis to 6 The graph properties are described in the
14. General mimm urf T werd N N CURRENT NODAL COORDINATES Sa Beeson i D nn DISPLACEMENTS quantities at globa ELEM TOTAL TEMPERATURE me ene nodes in this case the EQ PLASTIC STRAIN EXTERNAL FORCES CH CRACK WIDTH FRACTURE STRAIN alba INTERNAL FORCES Element nodes should be chosen MAXIMAL FRACT STRAIN r NODAL DEGREES OF FREEDOM Elements NONE Elements IPs PARTIAL EXTERNAL FORCES PARTIAL INTERNAL FORCES CODI should be PARTIAL REACTIONS selected to display PARTIAL RESIDUAL FORCES ltem j Y T first crack width at PERFORMANCE INDEX PLASTIC_STRAIN ae Kd encode PRINCIPAL FRACTURE STRAIN PRINCIPAL PLASTIC STRAIN Maximum there PRINCIPAL STRAIN PRINCIPAL STRESS 3 Lancel are three cracks at Apply each node E UK Figure 155 The crack width display m m rag The button OK has to be selected to complete the displaying of the cracks width see Figure 156 AtenaWin M CCStructures Static analysis 3DBeam msg File Edit View Window s Output Application Help Seat ae SESE EE ER LSE LIE od We Le BE amp I El Set 1 ConvergenceMonitor Sel ED CRACK_WIDTH at location NODES for item COD1 3 LEGEND Convergence criteria 1 4 eines War ine AOQIRAN indows is redrawn from the cache Emay be not up to time CODl 000071905 000062917 000053929 000044941 000035953 000026964 000017976 89881e 005 e
15. Miscellaneous Element Geometry Geometrical Non Linearty LINEAR Idealisation 3D Assign IM Lnassign Exchange Figure 61 The default Element Geometry parameters of the concrete class 30 37 ATENA GiD 44 When the Beam material parameters are defined the material can be ass gned to the geometry It is done by selecting the button Assign in the bottom of the material window After this the several options will appear In this case the Beam material will be assigned to the beam which is a volume Therefore the option Volumes should be selected Then the volume of the beam geometry can be selected in the graphical area and the button Finish has to be pressed to complete the assignement GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam layers SEF Files View Geometry Utilities Data Mesh Calculate ATENA Help va SG 218519 amp sen B Gill Versions bars plates Q Fer A Oe EL The volume of the A i beam has to be selected my p e gt gr SX PT i C The button Finish has to Es be selected to complete S A e A assigning of the material Enter Volumes to assign to Material Beam Finish Added 1 new volumes to the selection Enter more volumes ESC to leave Command Figure 62 The assigning of the CONCRETE material to the volume The beam material was created and assigned Now in the following section the steel plate material will be create
16. R This icon can be selected to activate the display of iso areas of various result quantities see Figure 154 After that the Post processor data window will appear and the width crack display can be defined see Figure 155 AtenaWin M CCStructures Static analysis Geometry File Edit view Windows Input Output Draw Properties Application Help Pgs x xd BH SEBS SAR BF TR EB EOLA MO Le ly m I a 82BB ae gE Pos amp processor data E Set 1 ConvergenceMonitor D X E Geometry Convergence criteria 1 4 Post processor data icon and 1 0000000 0 7500000 0 5000000 Geometry Window is active therefore the all graphic toolbar icon are active too Relative error 0 2500000 Max U_x 000021 Mnm U_x 00021 Max U_y 538 005 Min Uy 3e 005 Max U_z 00 Mm U_z 00043 12 500000 25 000000 37 500000 50 000000 M K 13 Mi WP 3DBeam 12 8 2009 structured mes Step 50 completed Elapsed CPU sec g X X Xx x X HW HE i X XX X X X Job ATENA Log end 13 5 2009 16 09 2 X X X 2 Mg gp XXX X XXX XX r d Mosi dc NEM PR REM RC E ta NUR v v Draw FE output data specification Analysis completed Time 50 30 OVR Figure 154 The active geometry window 109 Tutorial Post processor data Available data 1
17. SKE amp mn ca MM CM Ene cA 2 we Siii FRACTURE STRA 1 6129e 06 0 00029593 0 00059348 0 00089103 0 0011886 0 0014861 0 0017837 0 0020812 0 0023788 0 0026763 STRAIN Siii FRACTURE STRAIN NM vv m Er v p v v bd v v Yv bd bd v v v v v v v Yv v bd hd bd vr bd v v v v bd bd bd v v v J start gt Figure 174 Starting ofthe AtenaWin Then results data can be restored by Application Restore FE Model From command in the main menu see Figure 175 The step data file name should be 3DBeam 0xx where 3DBeam is the task name as it was defined in GiD in Section 3 1 1 2 The suffix Oxx represents the load step number which should be post processed In this case for example the 25 step can be chosen see Figure 176 Then the display crack width can be defined see Figure 177 The process of displaying of the crack width is described in the chapter 4 4 More information about post processing can be found in AtenaWin Manual 7 121 Tutorial AtenaWin M CCStructures Static analysis Geometry File Edit View Windows Input Output Draw Properties Wa ee Open AtenaWin Session Save AtenaWin Session A a a oo Le Hi g D Current Setting gt Set 1 ConvergenceMonitor Auto Save Modified re FE Model From Store FE Model To Convergence criteria 1 4 Execute Ctri Shift E Suspend Ctrl Shift 5 Break 4
18. Translation x First point Num x 0 0 y 0 0 e z 00 Second point Num x 0 0 y 009 e z 00 Duplicate entities Do extrude N x Create contacts IV Maintain layers Multiple copies 1 Select Cancel d Geometry has 1 new lines 2 new points Leaving Selected 1 Lines Command Figure 36 The first and second reinforcement bar 29 Tutorial 3 2 4 Layers Layers are useful feature of GiD The individual components of the created geometry can be separated into different layers In each layer and its components can be selectively displayed and the user can easily work only with the components of this layer In this chapter three different layers will be created concrete beam layer steel plates layer and reinforcement layer 3 2 4 1 Beam layer It is good to start with the definition of concrete beam layer This is done by the command Layers which appears after selecting Utilities Layers in the main menu The beam layer will be created by writing beam into a window depicted in Figure 37 The new layer will be created after the pressing of the button New Then the beam layer will appear in the list of the layers 1 Here the name of the new layer should be written beam 3 The newly created beam Layer To uze beam 2 The New button should be pressed to create the new layer To back Send To Close Figure 37 The Layers command The newly created be
19. v plates On Off Color A n n nr Sel New LA Delete Rename alphabetic Entities Draw Unassign Toback Send Tor Close Close A i al 2 e Q Assigned 1 new Points to condition Displacement_for_Point press escape to leave Command Figure 100 The visual display of the displacement condition 69 Tutorial 3 4 3 Symmetry condition The beam of th s example s symmetrical Therefore only half of the beam s analysed and it is necessary to enforce the axis of the symmetry along right side of the beam This means that the horizontal x displacements along this side should be equal to zero It can be done by definition of the boundary condition on the surface see Figure 101 Condition command can be executed by the icon P orby theData Conditions in the main menu The symmetry condition definition is depicted in the Figure 102 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors eo 63 221 B m A9 o Sr B m oe ele Lie de mi Layer To use v plates On Off Color n n r E Sel New Delete Rename alphabetic To back v Send To v Close The surface where the symmetry condition should be defined Leaving drawing conditions function Layer bars is ON I Command Figure 101 The surface for the symmetry condition ATENA GiD 70 Conditions 2 eE Constraint for Surface wk 2 Basic The symmetry condition s app
20. 11 Clicking on the icon U can also start the Create surface function Next the lines bounding the surface should be selected and then it 1s necessary to press ESC key to complete the surface definition The newly created surfaces are denoted by a pink colour as seen in the Figure 11 GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help z er The p nk rectangle defines a surface Created one new planar NURBS surface You can continue E x 1 529 Enter lines to define NurbSurface ESC to leave y 0 3694 gt z 0 Command Figure 11 The pink rectangle in the middle of blue lines defines the added surface ATENA GiD 12 The next step is to extrude the created surface into a volume to obtain the required beam The extrusion is done by the command Copy which appears after selecting the command Utilities Copy in the main menu see Figure 12 In this example the surface is extruded in the direction of the Z axis over the beam thickness 0 32 m The thickness will be given by a vector that is defined by coordinates of two points in the Copy menu The definition of the extrusion is depicted in the Figure 12 After the definition of all copy parameters the Select button should be pressed Then the surface for the extrusion can be selected in the graphical area The command is completed by pressing Finish button Selection of entities which should be e
21. 98 The displacement condition definition Parameter input Displacement for Point Z Displacement 0 0001 m By clicking on the icon the created condition can be displayed and can be used to verify if it 1s correctly applied at the right locations After clicking on that icon the displacement condition should be displayed at the point in the middle of the top plate see Figure 100 ATENA GiD 68 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help P ee Qo SX plates ke T d H8 v plates 5 B8 Layer To use v plates On Off Color A n nr Sel New Delete Rename alphabetic To back Send To v Close 1 The selection of the point for the displacement condition 4 9 SV BHAI 2 The button Finish has to be selected to complete displacement condition definition Enter Points with new values Added 1 new points to the selection Enter more points ESC to leave Command Figure 99 The selection of the point for the displacement condition GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help OG 8 SELF Sn Sp Aller ES a San Displacement for Point xy hk a Pir i USE decimal point DO NOT use comma uA E 8 Coordinate System GLOBAL 4 X Displacement 0 0 Y Displacement 00 7 Z Displacement 0 0001 2 7 Layer To z
22. Err x Window D iced Energy Ratio Current Required Dc ee ff cs SkyLin 3 9e 005 5 8e 005 3e 005 E Read Back substitution Dof Blk 782 Time 3 2 OYR Figure 147 The analysis in progress Basic description of the AtenaWin interface Window A contains specification of input commands that describes a problem Window B contains results from the current analysis Window C contains important messages from ATENA kernel sent during analysis Window D contains error and warning from ATENA kernel sent during analysis Window E contains graphical representation of the analysed structure Window F contains relative error time graph ATENA GiD 102 When the analysis s running it is possible to stop the calculation However it is not recommended to do it in this first tutorial example For that it is possible to use Application Suspend Break ASAP Break after Iteration Break after Step command in the main menu or icons of the Execution toolbar Break after Iteration icon Suspend icon it it can stop running analysis can pause running after iteration analysis Break ASAP icon it can stop running analysis as soon as possible Break after Step icon it can stop running analysis after step For detailed description of the AtenaWin user interface it is recommended to read AtenaWin Mannual 7 103 Tutorial 4 3 Load displacement graph During the running analys s t s very useful to see the ev
23. Figure 151 and the definition is finished by the clicking on the Apply button see Figure 151 Graph properties gt Graph Horizontal asis Meartical axis aus Manual Yes Floating Yes Manual Yes Floating Yes labels vertically Yes Min value 3 245269332864341e 0 Min value Redraw after teration Max value 10 00425339306265775 Max value Drawing mode Automatic V Increment Increment Line width Number of ticks Humber of ticks E Font Factor Label Displacement Label Figure 151 The graph properties definition ATENA GiD 106 Parameter input Title L D Horizontal axis Number of ticks 10 Label Displacement Vertical value Number of ticks 6 Label Load AtenaWin M CCStructures Static analysis Set 2 L D File Edit view Windows Input Output Draw Properties Application Help A md yo el ae EM SB ERE E X yx g NIC 1 d i We Le BE m H eee8 RES E Set 1 ConvergenceMonitor DX E CRACK_WIDTH at location NODES for item COD1 EEEENEEEEZA LZ BO IIUUtBG EE UL EKAN Uom 5 a Eye Rs 00033699 0 0779472 ER 0 0029024 0 0024187 0 0658952 00019349 km v 00014512 V 5 000096746 E 0 0538432 5 000049373 Y a 0 E 0 0417912 Logane 4 LD
24. Graph series icon this icon 1s active after selecting a Graph Window Convergence criteria a 14 Vamig TANANAN rnndows is redrawn from the cache Em wt up to time Relative error o en o o a o XXX X XXX XX 0 045 5 8e 005 NR v 2 statistics SkyLin y 0 079 9 5e 005 NR v Read Back substitution Dof Blk 77 Time 36 27 OYR Figure 148 The execution ofthe graph ATENA GiD 104 The name of the graph should be L D For the horizontal value the name Deflection DISPLACEMENT should be selected and factor should be 1 The name for the vertical value should be Load_REACTIONS and factor will also 1 All definition of the graph parameters is finished by clicking on the OK button After this the L D graph is shown on the top of the AtenaWin interface This graph is showing actual stage of the running analysis and it changes as the analysis progresses based on the current loads and deflections Graph series Select senes Fixed time Series id 1 Mew Series Del Series l Horizontal Name Lo Vertical Horizontal value Values profile for fixed time Mame Deflection3 5 DISPLACEMENTS 00001 Data sorting Value i Factor Vertical value Name Loads0 REACTIONS 000010 Value Factor Cancel f More Horizontal Wertical Figure 149 The graph series definition Parameter input Name L D Horizontal value Name Deflection_DISPLACEMENT Factor
25. Transformation Translation z Pa ram ete r i n p ut First point Entities type Lines Mun amp D I y 00 Transformation Translation a z 00 First point X 0 0 Second point M unn D y 0 0 T z 0 0 Second point x 0 0 y 0 09 Z 0 0 Duplicate entities Do estrude No iw Maintain layers Do ext ru d e N O Multiple copies 1 Select Cancel Figure 34 The parameter definition for the copying of the first bar ATENA GiD 28 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry Files View Geometry Utilities Data Mesh Calculate ATENA Help B BIS GVIBAlD amp Sim bil Versions Transformation Translation First point Num 0 0 y 0 0 z 0 Second point Num EI Duplicate entities noc Inc utc LU h4 m Create contacts The selected bar Jv Maintain layers Multiple copie f s Finish Press Finish to end select The button Finish has to be ke selected to complete translation Pick LEFTMOUSE to desplace view ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to desplace view ESC to quit Command Figure 35 The selection of the first reinforcement bar which should be copied GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry Files View Geometry Utilities Data Mesh Calculate ATENA Help Q 55552 e 8 amp gi GiD Versions Entities type Lines Y Transformation
26. U_y 946 006 Mim U_y 28e 005 Max U_z 000077 Mm U_z 00028 Mx k 13 Mmx 0 Mx Y 0 19 Min Y 0 Mecz 035 Mm Zo 003 2 Mix Wal 0 00072 Min Val 0 Time 34 0000 V 4 142793 Time License 4001 2 Y V 3DBeam inp mE V 3DBeam out E E 3DBeam msg EX BCs statistics before after elimination 0 0032 0 046 0 052 0 00015 NR 288 288 0 0032 0 039 0 046 0 00012 NR nd master dofs 615 0 81 0 8 LS nt needles BCs O 0 0026 0 03 0 029 7 9e 005 NR Superfluous contradictory BCs O 0 0024 0 41 0 7 0 001 NR uperfluous contradictory BCs 0 0 0039 0 13 0 18 0 00051 NR ired 76316 76316 0 0031 0 064 0 11 0 0002 NR or pure data only 12864 12864 0 0019 0 041 0 038 7 9e 005 NR data chunks per row 4 14236 4 14236 0 0029 0 23 0 41 0 00067 NR ks dimension 1 34786 1 34786 0 0024 0 078 0 12 0 00019 NR Copyright Cervenka Consulting 2003 2009 i 0 0017 0 026 0 022 4 6e 005 NR e mail ce 0 0017 0 03 0 029 5 3e 005 NR Please cor 3 file statistics SkyLin 0 0018 0 036 0 055 6 3e 005 HR i 22 Si 2 TP 3pBea 3 5 x Read Assembling Stiffness Internal Forces maana BQGroup 105 Elem 93 Time 34 0000 28 OVR Figure 160 The display of the undeformed model ATENA GiD 112 Another option for the better visualization of the cracking pattern is available It is done by the clicking on the Draw Crack Option ic
27. be active The x activation symbol is Ed RE Dialog window Layer To use v plates On Off Color n E r Sel New USense has to Delete Rename alphabetic be selected en Mmi Once this button is selected an input window will appear see Figure 84 The green lines represent axis of the U and V direction Close Select surface to divide Choose NURBS sense Command Figure 83 The dividing of the surface Enter value window Figure 84 The enter value window Parameter input Enter number of divisions 2 The button OK should be pressed in the above dialog After that the surfaces 1s divided into two parts see Figure 85 ATENA GiD 58 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help LayerTouse w plates On Off Color A oO Hn nr n Sel New Delete Rename alphabetic To back v Send To v Close The new line for the support z Surface divided Can continue Select surface to divide Command Figure 85 The divided top surface When the geometry for the support s created the support condition can be defined Conditions command can be executed by the Data Conditions in the main menu or by the icon The support condition definition is depicted in the Figure 86 59 Tutorial Conditions F a 7 m Constraint for Line wk Basic The support condition 1s
28. be generated again It is done by the command Mesh Generate mesh in the main menu or by pressing the key Ctrl and g at the same time If the new mesh is generated the analysis can be started again It is done by using the command Calculate Calculate or by the clicking on the icon E After selecting this command the program will first generate ATENA input file for the non linear analysis and then the AtenaWin window will appear and analysis will be in progress see Figure 147 101 Tutorial 4 2 AtenaWin interface description AtenaWin M CCStructures Static analysis 3DBeam 12 8 2009 structured mesh msg File Edit view Window s Output Application Help e Eo 7b E IO 8X OD ES m NE O5 7 j S 53 We Le BE ox D kHiseBe mgsgyssSt E Set 1 ConvergenceMonitor UE E Geometry IE LEGEND Convergence criteria 1 4 1 0000000 im Relative error x Y zZ Max U_x 6 1e 005 Min U x 6 8e 005 ax U y 2 2e 006 Min U 3 72 006 Max U_z 000011 Mim U_z 00002 Muck 13 v lt m gt u EX PP 3DBeam 12 8 2009 structured mes PEE P 3DBeam 12 8 2009 structured mes SEE A erfl mE 04 4 p ff fiuo Window B 3 Window C 3 x i 74 a es pI fi x sure d 8 21 x X X X sa chunks per row 4 06738 4 06738 Bl FF x XX 1 37576 1 37576 zE Resid Err Res bs E Energy
29. definition Enter Lines with new values Added 1 new lines to the selection Enter more lines ESC to leave Command GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help OD 25858 8 PASS Spass Dil version s X x Constraint for Line xy hk i Basic Coordinate System GLOBAL Constraint V Y Constraint IV Z Constraint Layer Touse v plates On Off Color a n F r Sel New Delete Rename alphabetic Send To v Close Assign Entities Draw Unassign Command Figure 88 The support condition 61 Tutorial 3 4 2 Displacement On the top plate a predefined displacement should be specified This displacement will be located in the middle of the loading plate top plate and the displacement should be defined 0 0001m in the z direction This load should be applied on a point in the middle of the top plate However this point does not exist yet Therefore first the geometry of the top plate has to be modified The point should lie in the centre of the top surface This point has to be part of the top plate geometry It cannot be simply created on the surface Therefore the top surface will be divided into two surfaces and then the line which separates these surfaces will be also divided into two parts Then the middle point can be used to for the application of the prescribed displacement
30. definition changes every time the Update changes button is selected It is not recommended to modify these default parameters unless the user is an expert in nonlinear modelling and simulation In this tutorial problem the generated parameters will not be modified SOLID Concrete pm sss BOO EC2 Basic Tensile Compressive Miscellaneous Element Geometry Maternal Prototype CCSD onLinCementitiouse Base Material Prototype LCSD MNanLinCementitinusz Young Madulus E 32000 MPa Poison RHatia MLI 0 2 Tension Strength FT 29 MPa Compresion Strength FC 38 MPa Assign Unassign Exchange Figure 57 The default Basic parameters of the concrete class 30 37 SOLID Concrete Beam r m CS X EL Basic Tensile Compressive Miscellaneous Element Geometry MM Fracture Energy GF 7 25e 005 pe Fixed Crack 1 Activate Crack Spacing Activate Tension Stiffening Unassign Exchange Close Figure 58 The default Tensile parameters of the concrete class 30 37 43 Tutorial SOLID Concrete EC2 Basic Tensile Compressive Miscellaneous Element Geometry Plastic Strain EPS CP 0 00119 Inset of Crushing FCO 6 09 MPa Critical Camp Disp D 0 0005 m EL Basic Tensile Compressive Miscellaneous Element Geometry E xcentricilu EXE 0 0 52 Dir of pl Flow BETA 0 0 Rho Density D 1 0023 Thermal Expansion Alpha 0 000012 1 000012 EC Basic Tensile Compressive
31. eR OLM a S c3 Veple o ox I LEGEND E CRACE WIDTH COD1 000075238 000065333 000056428 000047024 000037619 000028214 000018809 9 4047e 005 0 x Y z Mx Ux 000024 Mim U x 000075 Max U_y 956 006 Min U_y 2 7e 005 Max U_z 000073 Min U_z 00029 Mex 13 Min X 0 Mx Y 0 19 Min Y 0 MMax Z 035 Min Z 003 Max Val 0 00075 Min Val 0 Time 35 0000 V 4 14 2793 License 4001 Figure 163 The drawn crack width All of these options of the crack width display crack drawing are in the fact post processing features of AtenaWin but they can be used already during the execution of the nonlinear analysis This is one of the unique features of ATENA software During analysis execution all AtenaWin post processing capabilities are available For more information it is recommended to study AtenaWin Manual 7 ATENA GiD 114 5 POST PROCESSING The created model can be post process in the AtenaWin or in the GiD AtenaWin post processing was already briefly described in the previous Section 4 4 5 1 GiD post processing After finishing the nonlinear analysis AtenaWin window can be closed The program asks if all changes should be saved Then button Yes should be selected in all cases Then back in the GiD interface the process info will appear Through this dialog the program asks if the process of the analysed problem is finished or if the post processing should be started The button Postproc
32. name plates into the window and pressing button New Then the plate layer will appear in the list of layers The newly created plate layer is automatically activated The activation 1s indicated by the checkbox symbol Ei The moving of the steel plate geometry into the plate layer can be started by pressing of the button Send to Then the pull down menu will open see Figure 45 The reinforcement geometry contains two types of entities and all of them should be moved into the bars layer Therefore the option Also lower entities have to be activated and the command Lines should be chosen After selecting the Lines in the pull down menu the geometry which should be assigned to the bar layer can be selected see Figure 46 Finish button will complete this command 35 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry Ov Q9 555539 48 Shas Dil Versions l After pressing Send to button the pull down menu will appear Delete Rename alphabetic To back Send To v Close w Also lower entities Points Lines 2 The option Also lower entities has to be active Sus Dimensions 3 Then the Volumes should be selected GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry Files View Geometry Utilities Data Mesh Calculate ATENA Help SL E TEENER P amp Spies The button Finish has to be selected to complete Send to command ke Added 1 new volumes to the selection E
33. the command draw condition can to be selected to display and verify condition definition The button Draw should be selected in the bottom of the Conditions window After clicking on that button several options will appear see Figure 141 For example the Colors can be selected and the master contact condition will be drawn see Figure 142 ATENA GiD 96 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 31 7 2009 Files View Geometry Utilities Data Mesh Calculate ATENA Help B Q9 555539 a48 5 4 amp amp s Dil version s Conditions Fixed Contact for Surface Type of Cond Master ContactName Top This button should be selected to draw contact condition see Figure 142 Fixed Contact for Surface E pope Colors olors All conditions Field s value Field s color olors can be selected GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam contacts SEs Files View Geometry Utilities Data Mesh Calculate ATENA Help ver pr Glen GiD Version s Conditions Wan B Master Top beam 1 d Now on conditions will be drawn by color press escape to leave Command Figure 142 The Master Top beam condition 97 Tutorial 4 1 2 Slave Top plate condition Conditions command can be executed by the selection of the icon or by the selecting the command Data Conditions in the main menu The contact condition definition for mas
34. to leave Command GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors iN ec Gi Version 9 24 S cl Name uo ru m Is Ba C v plates 5 58 jw x Constraint Y Constraint Z Constraint DIE Layer To use v plates On Off Color n E 3 Sel New wo ART TEE IA I Du PRES Bz BS Ay RD Delete Rename alphabetic Assign Entities Draw Unassign To back v Send To v Close Close Assigned 1 new Surfaces to condition Constraint_for_Surface press escape to leave Command Figure 104 The visualization of the applied symmetry condition ATENA GiD 72 3 4 4 Monitors Monitors provide important information about state of the structure They can be used to monitor various important quantities during the analysis For instance it may be interesting to monitor the development of deflections or strains at certain critical locations during the nonlinear analysis In this example two monitors will be defined One monitor will be monitoring loads on the top plate and second one will monitor deflections in the middle of the beam The monitors are represented in GiD as a special condition that needs to be applied in the first interval In this example the monitors will be defined as a point condition at the top plate and in the middle of the beam The problem is that in the current model a suitable point for the application of the monitoring condition exists only at the t
35. 0 pe v v 2 x 5 H T z a Mx Ux 000026 Min Ux 000078 Max U_y 54e 006 Mim U_y 34e 005 Max U_z 000081 Mm U_z 00028 Mu X 13 Mmx 0 Mx Y 0 19 Min Y 0 Nix Z 035 Mind 003 Max Val 0 00072 Min Val 0 Time 34 0000 V 4 14 2793 License 4001 Mi ij EX WE 3DBeam msg Se x SRSSS SSS SSeS See Sees Sees Se See Se asa sees see mm BCs statistics before after elimination 22 1 0 0022 0 041 0 04 288 288 E 1 1 oF nd master dofs 615 23 1 0 0023 0 045 D C nt needles BCs 0 24 1 0 0023 0 048 B C superfluous contradictory BCs O 1 I 0 uperfluous contradictory BCs O 25 i 0 0028 0 045 D C ired 76316 76316 1 1 0 or pure data only 12864 12864 26 1 0 0032 0 046 Dig data chunks per row 4 14236 4 14236 27 1 0 0034 0 036 o ks dimension 1 34786 1 34786 1 1 D 28 1 0 0028 0 034 B C 1 1 ease cor file statistics SkyLin 29 1 0 0026 0 037 0 05 nm 1 t nm Jill Read Assembling Stiffness Internal Forces Ba Group 105 Elem 140 Time 34 0000 21 OVR Figure 156 The crack width display in the geometry window For better view the model can be rotated It is done by clicking on the Model transformation icon and then by setting the degree of the rotation along each axis using the slide bars as described in Figure 157 ATENA GiD 110 AtenaWin M CCStructures Static analysis CRACK WIDTH at location NODES f
36. 0 022 4 6e 005 NR 0017 0 03 0 029 5 3e 005 NR di almum gt or pure data only 12864 12864 data chunks per row 4 14236 4 14236 ks dimension 1 34786 1 34786 Copyright Cervenka Consulting 2003 2009 i e mail ce Please comm IST odo file statistics SkyLin IH Assembling Stiffness Internal Forces Elem 84 Time 34 0000 27 OVR Figure 157 The crack width display and the rotation of the model Also for better view the model can be displayed undeformed It is done by the clicking on the Draw properties icon 9 and then by the setting the Draw undeformed checkbox see Figure 158 This command is completed by selecting the Apply button see Figure 159 and Figure 160 AtenaWin M CCStructures Static analysis CRACK_WIDTH at location NODES for item COD1 File Edit View Window s Input Output Draw Properties Application Help CEE zi ci je UM BERRY DURE em OLM a m t3 Kee KD E Set 1 ConvergenceMonitor EX E CRACK WIDTH at location NODES for item COD1 mE LEGEND a Convergence criteria 1 4 l 7 CRACK_WIDTH Waning MAORA vdows is redramm from the cache Emay be not up to time copl Draw properties 000071589 Model shape Common attributes ee Redraw after Iteration v 00005369 Draw deformed L1 Wire
37. 1 SH eer CaS EP Set 1 ConvergenceMonitor ER E cRACK_WIDTH at location NODES for item COD1 DEAR Convergence criteria 1 4 1 0000000 0 7500000 _ o E 05000000 zi 5 z S E a 0 2500000 e e e 1 4 5 P atena err i8 IX R s i s m IP atena inp PES atena out PES atena msg Sel Sa ss DER ER as ca Ms sD a ZIEHEN SD a eo a as a TENA Log start 14 5 2009 13 43 04 P Job ATENA Log start 14 5 2009 13 43 Version 4 1 4 2570 c Cervenka Con gj Job ATENA Log end 14 5 2009 13 43 C TENA Log end 14 5 2009 13 43 04 Read Archive restored _In progress Time 50 3 OVR Figure 177 The crack width display of the 25 step 123 Tutorial 6 CONCLUSION This tutorial provides a step by step introduction to the usage of ATENA GiD on an example of a reinforced concrete beam without shear reinforcement Although this example is relatively simple from geometrical and topological point of view it is not a simple problem from the numerical point of view Due to the missing shear reinforcement the beam fails by a diagonal shear crack which is very difficult to capture using smeared crack approach This example demonstrates the powerful simulation capabilities of ATENA GiD for modelling the brittle failure of concrete structures Even with a coarse mesh which was used in this demonstration example the diagonal shear crack
38. 2 4 3 Load displacement gr ph u een 104 4 4 Crack width TEjr ucm c 109 5B POST PROCESSING 5 45 25 dra ie ao oos a epi deo e gRP ees oe oa osa Far os osa Peso o Oeb ease deat eso deav ese cdsssestvdesseeses 1 RO i Tutorial 5 1 GID post processing una cascassdsseceensuaseiludsvevcccssuievscsusdestieuercosesocsdeusedsocntscneudesedesdavesvaves 115 5 2 AtenaWin post processing viscscssscveccssssccssiicedscssceccssectceuessdsesdecveussesds lt ouctedesbecsdssccsscdsestsessedsvesessenes 121 6 CONCLUSION teet 124 7 PROGRAM DISTRIBUTORS AND DEVELOPERS sessosososososeseseoeosocososososeseoeososososososesososooe 125 EE SI yn E T E E E E E E A 128 ATENA GiD ii 1 INTRODUCTION This tutorial provides a basic introduction to the usage of the program ATENA and GiD and it is specifically targeted for ATENA GiD beginners ATENA GiD is a finite element based software system specifically developed for the nonlinear analysis of reinforced concrete structures ATENA 1s used for the analysis itself and the program GiD is used for the data preparation and the mesh generation This tutorial contains a step by step explanation how to perform a non linear analysis on an example problem of a reinforced beam without smeared reinforcement The geometrical and material properties correspond to the experimental setup by Leonhard in 1962 More details about the problem or experiment can be also obtained from the original report 6 or fro
39. 5 The first monitor condition definition 73 Tutorial Parameter input Monitor for point Output Data REACTIONS Dir Z Monitor Name Load GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help 5 G5 99 a8 8 PR Spas B bil Versions Layer Touse plates Off Color as r 3 Sel New Delete Rename alphabetic To back v Send To v Close 2 The button Finish has to be selected to complete monitor condition Enter Points with new values Added 1 new points to the selection Enter more points ESC to leave Command Figure 106 The selection of the first monitoring point ATENA GiD 74 ms By clicking on the icon P the created condition can be drawn After clicking on that icon the monitor condition will be displayed at the point in the top plate see Figure 107 gt GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors SSLIBE eeme 4 2 l4 Conditions al Output Data Dir j I Diy Iv biz Draw Each Iteration MonitorN ame Monitor Delete Rename alphabetic To back Send To v Close Display of the monitor condition Assigned 1 new Points to condition Monitor for Point press escape to leave Command Figure 107 The first monitor condition 3 4 4 Second monitor The second monitor point should be located at the middle of the beam near its bottom surface wh
40. 5 v plates e 4 amp 6 H5 LayerTo use w plates On Off Color at FE sa New Delete Rename alphabetic To back v Send To v Close Added 1 new lines to the selection Enter more lines ESC to leave Deleted 1 lines Leaving deleting function Command Figure 90 The execution of the division command 63 Tutorial After the executing the divide command the cursor will change into this shape and the appropriate surface should be selected Once the surface is selected a dialog window will appear on the screen see Figure 91 gt GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors ed om 02 ay gt e J plates T 2 52 Gil Semion 9 The green lines represent axis ofthe U and V direction bars T uw v plates e d LOT Dialog window Layer To use v plates Off Color n Fr 3 Sel New Delete Rename alphabetic To back v Send To v Close USense has to be selected Once this button is selected the Enter value dialog will appear see Figure 92 Select surface to divide Choose NURBS sense Command Figure 91 The dividing of the surface The dialog window asks for a direction along which the surface should be divided The possible direction are denoted as U and V and they are represented as green axes n the graphical area In this case USense should be chosen since it 1s necessary to divide the surface along the U direction Onc
41. 54P Ctrl Shift 4 Break after Iteration Ctri Shift I Break after Step Ctri Shift B Continue Execution Ctrl Shifk C e Continue from Cursor Ctrl Shift F v Re execute Ckrl ShiFE R 5 PrejPost process Ctri Shift P Monitor set 1 Ctrl Shift 1 a Monitor set 2 Ctrl Shift 2 HTML PDF DOC Default Directory 0 e IP atena err O X Time 2 W atena inp HUE V atena out Restore analvsis from archive eiui o atena msg m Xx Y Z Max U_x 1e 020 Min U_x 1 20 DU v 1e 020 Mm U_y 1e 020 Max U_z 1 2 010 Mm U_z le 010 Men X 1e 020 i Figure 175 The Restore FE Model From command AtenaWin M CCStructures Static analysis Geometry File Edit View Windows Input Output Draw Properties Application Help sh a e8 se 4 E Set 1 ConvergenceMonitor Convergence criteria 1 4 Restore From O AtenaCalculation O2 em E 3DBeam 0001 3DBeam 0002 Recent E 3DBeam 0003 E 3DBeam 0004 E 3DBeam 0005 E 3DBeam 0006 3DBeam 0007 E 3DBeam 0008 3 3DBeam 0009 3DBeam 0010 3DBeam 0011 Relative error oO g j pa eo gal My Documents a CIS E 3DBeam 0013 T E 3DBeam 0014 E 3DBeam 0015 My Computer 3DBeam 0016 3DBeam 0017 3DBeam 0018 3DBeam 0019 3DBeam 0020 3DBeam 0021 3DBeam 0022 3DBeam 0023 3DBeam 0024 3DBeam 0025 3DBeam 0026 3DBeam 0027 3DBe
42. CERVENKA CONSULTING C Cervenka Consulting Ltd Na Hrebenkach 55 150 00 Prague Czech Republic Phone 420 220 610 018 E mail cervenka cervenka cz Web http www cervenka cz ATENA Program Documentation Part 4 6 ATENA Science GiD Tutorial Step by step guide for nonlinear analysis with ATENA and GiD Written by Zdenka Proch zkov Jan ervenka Zden k Janda Dobromil Pryl Prague March 12 2010 Trademarks ATENA is registered trademark of Vladimir Cervenka GiD is registered trademark of CIMNE of Barcelona Spain Microsoft and Microsoft Windows are registered trademarks of Microsoft Corporation Other names may be trademarks of their respective owners Copyright 2000 2010 Cervenka Consulting Ltd ATENA Science GiD Tutorial CONTENTS 1 e INTRODUCTION 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 1 2 STARTING PROGRAM 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 2 3 PRE PROCESSING 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 3 3 1 Introduction pe 3 3 1 1 Introduction of the graphical user interface une at onu adden uan aces er ubs Peu bes In essei 3 3 2 Geometrical MOGED pomme M 8 3 24 COHCICIE DOES sioe bete dais net ee oat camada nie 8 322 Loa
43. E d CODl v Proportional Resize i 0 003362 Fixed Size and Pos Cascade 0 0029417 Tile 00025215 0 063017 Arrange Icons 00021012 Next Window Ctri Shift N 0 001681 Previous Window Ctrl Alt N 00012607 1 3DBeam inp 00008405 0 051530 2 3DBeam out 000042025 v 33DBeam msg 4 3DBeam err 5 CRACK WIDTH at location NODES For item COD1 0 X v 6 Set 1 ConvergenceMonitor Y S o04042 7 Set 2 L D z E aa LU aM Mex U x 000022 Mi U x 00019 Max U_y 35e 005 Min U_y 29 005 Geometry window en 0 0285545 Min U_z 00042 Mux 13 Mn 0 M Y 0 19 All opened graphs mr 0 0 017066 nn j Mm 003 l Mux Val 00034 Min wa 0 Time 50 0000 0 0055731 V 4142793 0 0C 0 00 0 0C O DC 0 0C O OC 0 0C 0 0C 0 0C 0 0C 0 004 1534 BEEN v Displacement T pla lt 3j o 3DBeam msg TAR 27 1 0 001 0 018 0 04 1 8e 005 NR 1 1 0 83 0 8 LS 28 1 0 00073 0 01 0 018 7 6e 006 NR 29 1 0 00067 0 0085 0 0083 5 6e 006 NR Step 50 completed Elapsed CPU sec this step Job ATENA Log end 17 5 2009 11 43 24 v Editing File Line 1481 Column 1 Time 50 0000 29 INS Figure 153 The executing ofthe Default layout 2 ATENA GiD 108 4 4 Crack width display During the running analysis can be also useful to display crack width in the Geometry window When this window is active all icons of the Graphics Toolbar are active too In the Graphics Toolbar there is a very useful icon called Post processor data
44. EFTMOUSE to desplace view ESC to quit Command Figure 32 The bottom and top plates ATENA GiD 26 3 2 3 Reinforcement bars The geometry of reinforcement bars w ll be defined only by two lines The first bar w ll be created and then the second bar will be copied The creation of the first bar starts by clicking the icon N or with the command from the main menu Geometry Create Straight line The command line in the bottom of the main window should be used for the coordinates definition The coordinates of the reinforcement are 0 05 0 05 0 05 and 1 275 0 05 0 05 See Figure 33 Dil version s I we Cs ie 7 9 SE C49 G Pick LEFTMOUSE to rotate ESC to quit Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Command Figure 33 The first reinforcement bar Parameter input Coordinates of the line 1 0 05 0 05 0 05 2 1 275 0 05 0 05 27 Tutorial Second reinforcement bar will be created by copying of the first bar The copy starts by the command Utilities Copy in the main menu The definition of the translation is depicted in the Figure 34 After the definition of all parameters the Select button should be pressed Then the line required for the translation can be selected in the graphical area see Figure 35 After the selection of line it is necessary to press Finish button to complete the translation see Figure 36 Entities type Lines z
45. ENA GiD 82 Enter value window Lancel Figure 118 The program offer the size ofmesh Dialog window EJ i I Mesh Generated Press OK to see it Mur of linear elements 38 Hum of Tetrahedra elements 291 24 Hum of nades 783 Cancel Figure 119 The numbers of elements and node of this geometrical model The demo version of the GiD is limited to 1000 nodes The example of this tutorial contains 789 nodes Therefore the automatic sized mesh could be generated see Figure 120 But the demo version of ATENA is limited to 300 elements see Figure 121 And this mesh contains almost 3000 elements therefore this mesh will not be functional in ATENA and the number of element should be decreased It can be done by using the structured mesh option which allows better control about the number of generated elements Also in structural analysis it is usually preferred to use brick elements Therefore in the next steps of the mesh generation the option to create six side brick element will be described In this case the structured mesh will be specified only for the beam volume because it is an important part of the structure for the structural analysis 83 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 12 8 2009 Files view Geometry Utilities Data Mesh Calculate ATENA Help 8 BIBS BIBAlD amp Bin Dil Versions CINE rd S RAN Fr xS b e We e R RT d Due E IRRE nn WS A Change
46. ENA Help Problem type pi gt Z 2 beee Conditions SOLID Elastic Interval Data SOLID Steel SOLID Concrete gt L mm oem ow SOLID Soi Rock ci Name yo rut B Data units SHELL Concrete Steel beam P d BEAM Concrete L 1 Interval gt l plates Interface Local axes d Spring Layer To use bars On Off Color n n E 3 Sel New Delete Rename alphabetic To back v Send To v Close e Layer plates is OFF Command Figure 71 The selection of the command for the definition of the reinforcement material After the selection of this command the window for the definition of the 1D Reinforcement will appear see Figure 72 ATENA GiD 50 1D Reinforcement EBK EL 2 Basic Reint Function Miscellaneous Element Geometry Type af reinforcement Reinforcement Young s Modulus E 200 GPa Characteristic Yield Strength F xk 500 MPa Class of Reinforcement Choose Class Epsilon u k 0 05 Parameter k 1 08 Safety Format Design First click update changes button to save material properties Next select checkbox below and click update M changes button again to generate the EC material properties Generate Material Assign Unassign Exchange Close Figure 72 The window for the definition of the 1D Reinforcement First it is important to copy material definition of the already existing material a
47. ENA Help bill versions Version 9 200 190 Entered point 4 Enter point Command Figure 7 Four created points before zooming 9 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help 1B Dil versions gt 0 0 19 0 Entered point 4 Enter point Command Figure 8 Using of the Zoom frame icon enables to have a better view of the created geometry Next step is to connect these points by lines Lines are created using the command Geometry Create Straight line in the Main menu or by clicking on the icon N Then the message window at the bottom will show the following sentence Enter points to define line ESC to leave The lines can be defined by entering exact coordinates into a command line or it 1s possible to directly pick the already existing points In this example the direct picking has been chosen The direct picking can be done by selecting Contextual Join Ctrl a in the Mouse menu The Mouse menu can be found by clicking on the right button of the mouse in the graphical area see Figure 9 Alternatively this option can be activated directly by pressing the key Ctrl and a at the same time ATENA GiD 10 GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help ed eo 99 ay E e X BV Layer 9 Comm Bae Zoom Point In Lin
48. Eg 0 0297392 Ux 090021 Ux 00021 U y 53e 005 0 0176872 Uy 3e005 0 0056352 0 0000825 0 0005002 0 0009179 0 0013357 0 0017534 0 0021712 0 0025889 0 0030067 0 0034244 0 0038422 0 0042593 Displacement v Read Analysis completed Time 50 30 OYR Figure 152 The defined L D graph This graph can be saved by the command File Save Figure Settings in the main menu Detailed description of the L D graph creation can be found in the AtenaWin Manual 7 chapter 5 107 Tutorial When there are more w ndows in the layout of the AtenaW n the command Default layout l and Default Layout 2 in the main menu can be used to organize all windows After selecting the option Default layout 2 Window s Default layout 2 in the main menu all widows of the same type will appear at the same location one behind each other see Figure 153 It means that all text windows are at the bottom of the basic layout all geometry windows are on the right side and all graphs are on the left side Individual windows can be switched by icons and AtenaWin M CCStructures Static analysis 3DBeam msg ER File Edit view BUSTO Output Application Help S d New Window EEE DOLLE LILAS a od e Le B Split vertically BITTE Split Horizontaly CRACK_WIDTH at location NODES for item COD1 Synchronize views LEk LEGEND Default Layout 1 CRACK_WIDTH 0 074505 SEENA
49. Image to clipboard When the mesh is correctly generated the geometrical model definition is finished and calculation can be started See following chapter 4 91 Tutorial 4 FE NON LINEAR ANALYSIS This chapter describes the process of running a non linear analysis of the Leonhardt beam using the data that have been prepared in the previous sections of the tutorial The finite element analysis is started by the clicking on the icon or by the using of command Calculate Calculate After selecting this command the program will start to generate the input files for each step of the non linear analysis This process is indicated by the dialog box see Figure 135 And then the AtenaWin window will appear and analysis will be in progress see Figure 136 Dialog box ae Initializing process YYa t please Figure 135 The initializing of the analysis If the creation of the geometrical model and definition of the boundary conditions were done right the static analysis should be finished in one minute Then in the Geometry window it is possible to see that the loading steel plate strangely distorted and shifted see Figure 137 by the applied loads Due to that the structure could not be calculated correctly It is because there 1s no connection defined between the concrete beam and the steel plates Program does not automatically detect possible contact between volumes Contacts have to be added manually by
50. Info Input file was written and will be executed by amp tenawin N hy My ai NN N IN IN NA LT RC y XY Aj NS IY NJ IN Process 3DBeam 12 8 2009 structured mesh started at Thu Aug 13 10 11 46 has finished File written OK Command Figure 138 The GiD interface after analysis 4 1 Missing contacts The geometry is composed from three 3D regions concrete beam and two steel plates These regions should be connected together However in this example there is no connection yet Therefore suitable contact conditions have to be added In ATENA a suitable condition for connecting independent surface together 1s called Fixed Contact Fixed contact condition distinguishes Master and Slave conditions In this case the beam surfaces will be masters and plates will be slaves Therefore four contact conditions have to be added two master conditions on beam top and bottom and two slave conditions on plates top and bottom The conditions should be applied on the geometrical model and not on the mesh itself otherwise it would be lost during next mesh generation Therefore if the mesh 1s displayed in the graphical area of the program the icon e should be selected to switch between the mesh view and geometry view This can be alternatively also accomplished by selecting the command Geometry View geometry in the main menu ATENA GiD 94 4 1 1 Master Top beam condition Conditions comman
51. Iso Surfaces gamma f yz Stream Lines gamma f xz Graphs SiFRACTURE STRAIN Result Surface Si FRACTURE STRAIN Deformation g Sii FRACTURE STRAIN Line Diagram tt eur REA SEIFE Sii FRACTURE STRA 1 6129e 06 ET 0 00029593 0 00059348 0 00089103 0 0011886 i TOO SITE Du gt a The message window shows maximum and minimum fracture strain Contour Fill COD1 Min 0 Max 0 000570 th Contour Fill Sii FRACTURE_STRAIN Min 0 0026763 Max 1 6129e 006 i The 35 step is post processed Command Figure 173 The displayed FRACTURE STRAIN More post processing capabilities can be found in the Help of the GiD or in the GiD manual 5 ATENA GiD 120 5 2 AtenaWin post processing Results can be post processed also in AtenaWin The L D graph and Crack width which have been explained in the chapter 4 section 4 3 and 4 4 are the few of the many possibilities of post processing in AtenaWin For post processing in AtenaWin it is important to know how to open results in AtenaWin First of all AtenaWin should be started from the Start menu on your computer see Figure 174 GiD AtenaV4 Static a Yi wm Pedy rote nig 28 HS E Cee E e x I2 wre t cy we 0 Bea I Im EN ENE O DIMA E v Fo ER v b a v To SS 7 bd ee Ba MM ATENA Engineering gt 77 ATEMA Science gt AtenaWin v HE S n zb S m d 5 5 B D
52. NR e mail ce 0 0017 0 026 0 022 4 6e 005 NR Please cora file statistics SkyLin 0 0017 0 03 0 029 5 3e 005 NR rt i ia i Bi a Assembling Stiffness Internal Forces manaa J Group 105 Elem 84 Time 34 0000 27 OVR Figure 158 The setting of the display of the undeformed model 111 Tutorial Draw properties Model shape Common attributes Draw deformed d Wire L E Iteration wire Draw mode Automatic v Stretch to fit window L_ Yes Draw legend Te Light es Type Absolute Relative 9 Hidden line removal Yes Black on white Yez Draw iso areas tes Draw all nodes es Rigid body BCs Yes Rendering color and scale Line width 0 0005330636 E ER SEE uU Dozens BEE Juadratics size Number of subintervals AtenaWin M CCStructures Static analysis CRACK WIDTH at location NODES for item COD1 raten C le c File Edit View Window s Input Output Draw Properties Application Help sh e ee i gt a iE xd m3 zj cj amd xd d eB BRR AY DS Elem E QR 5 Bleii xm E Set 1 ConvergenceMonitor X E CRACK WIDTH at location NODES for item COD1 EIER LEGEND gt Convergence criteria 1 4 on Warning PRONE udows is redramm from the cache Emay be not up to time coDl 00007151 000062571 000053632 000044694 000035755 000026816 000017877 89387e 005 2 0 a v v x E Y T i E a Max U_x 000025 Min U_x 000076 Max
53. Problem Data window will appear see Figure 5 There the Title and Task Name should be changed to rename files where the results of the analysis will be saved When the analysis is finished all results are saved in files From those files results can be executed and processed lately Therefore it is useful to rename the title of the files where results should be saved and it is useful to do this saving in the beginning of the any creation of project Later it could be forgotten ATENA GiD 6 Problem Data E3 M 2 Global Settings Global Options Transport Restart Calculation from Calculated Step Title Shear beam T askMame SDB earn NC Method Newton Fiaphson om Title could be for example Displacement Error 0 01 Shear beam Residual Error 0 01 Absolute Residual Error 0 01 Energy Error 0 001 Task name could be Iteration Limit 30 3DBeam Optimize Band width Sloan Stiffness Type Tangent Predictor Assemble Stiffness Mati Each Iteration solver LU W Line Search Method Line Search With Iterations Line Search With Iterations Unbalanced Energy Limit 0 8 Line Search Iteration Limit 3 The button Accept has CORN Eta 0 1 to be selected to finish Maximum Eta 1 the definition After that Conditional Break Criteria the window can be closed Accept Close Figure 5 The Problem Data definition Parameter input Title Shear beam TaskName 3DBeam Tutorial 3 2 Geometrical model This chapter d
54. When the bar material parameters are defined the material can be assigned to the geometry It is done by selecting the button Assign in the bottom of the material window After this the several options will appear In this case the Bars material will be assigned to two straight lines Therefore the option Lines should be selected Then the lines of the reinforcement can be selected in the graphical area and the button Finish has to be pressed to complete the assignment see Figure 79 ATENA GiD 54 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam22 7 2009 4 Reinforcement 25 x z io v EC2 Basic Reinf Function Miscellaneous Element Geometry Files View Geometry Utilities Data Mesh Calculate ATENA Help O8 BISSW1B mI Some B 24 The button Finish has to be selected to complete MPa the assignment of the material Finish Velete nename alphabetic To back v Close Send To v The lines of the reinforcement has to be selected Enter Lines to assign to Added 2 new lines to the selection Enter more Ines 0 leave Command Figure 79 The assigning of the Bars material into lines Selb All materials are created and assigned The icon Draw all materials scan be used to check if all materials are correctly assigned But before that it is important to display all layers and their content It is simply done by clicking on the grey ee should change to the yel
55. Y WOELFEL Beratende Ingenieure GmbH u Co Bereich Technische Programme Max Planck Strasse 15 D 97204 Hoechberg phone 49 931 49708 360 fax 49 931 49708 650 e mail wtp woelfel de www woelfel de 125 Tutorial INDIA Computer Solutions Shri Sai Kripa 56 Motilal Nehru Road Ground Floor Kolkata 700 029 West Bengal India Mr Amal Kumar Paul phone 91 33 2454 0005 fax 91 33 2475 5420 email amal_paul vsnl net JAPAN RESEARCH CENTER of COMPUTATIONAL MECHANICS Inc RCCM Togoshi NI Bldg 1 7 1 Togoshi Shinagawa ku Tokyo 142 0041 Japan phone 813 3785 3033 fax 813 3785 6066 e mail junko rccm co jp yoshi rccm co jp www rccm co jp ROMANIA SC INAS SA 37C Bd N Romanescu 200738 Craiova Romania phone 40 251 438 789 fax 40 251 426 335 email office inas ro www inas ro RUSSIA Softline Trade Office 304 2 4 Luzhnetskaya Naberezhnaya building 3 A 119270 Moscow Russia phone fax 7 495 232 00 23 email info softlinegroup com www softlinegroup com SOUTH KOREA CNG SOFTEK 302 Cheongsan Bldg 214 6 Poi Dong Gangnam Gu Seoul Korea 135 963 phone 82 2 529 0841 fax 82 2 529 0846 e mail leeih cngst com cngst paran com www cngst com ATENA GiD 126 USA Ensoft Inc 3003 West Howard Lane Austin Texas 78728 phone 1 512 244 6464 ext 201 Sales and Order Status ext 208 Technical Support ext 202 Consulting Engineering fax 1 512 244 6067 email en
56. am 0028 3DBeam 0029 3DBeam 0030 3DBeam 0031 3DBeam 0032 3DBeam 0033 3DBeam 0034 3DBeam 0035 3DBeam 0036 3DBeam 0037 3DBeam 0038 3DBeam 0039 3DBeam 0040 3DBeam 0041 3DBeam 0042 3DBeam 0043 3DBeam 0044 3DBeam 0045 3DBeam 0046 3DBeam 0047 3DBeam 0048 3DBeam 0049 3DBeam 0050 File name Files of type My Network a atena inp LUA nenau GiD to Atena Translator bef e mail cervenka cervenka cz ff Written by Jiri Niewald Ph D Fi Zdenek Janda e mail zdenek janda cervenka cz fi Please contact us in Case of some problems ff Developed For GID Version 8 2 0b Fi tena Version 4 1 fi Template build 2182 for Atena Static Creep Dynamic and Transport Analysis ae Html Help Version 9 0 for English ff Generating starting time Created Fri Jan z na nno 14 47 10 3DBeam 0025 xj Results files 0 9 v Read Completed Figure 176 The 25 step should be opened ATENA GiD 122 Cancel LIA emea msg Max U_x Mm U_x Max U_y Mm U_y Max U_z Mim U_z Max x Mim x Max Y Mm Y Max Z Min Z le 020 1e 020 le 020 le 020 1e 010 le 010 le 020 1e 020 le 020 le 020 le 010 le 010 Time 0 00000 V 4 14 2793 License 4001 Im 2 e Time 0 00000 0 x OYR AtenaWin M CCStructures Static analysis CRACK_WIDTH at location NODES for item COD
57. am layer is immediately activated The layer activity is indicated by the sign El The next step is to assign the beam geometry to the beam layer by pressing the button Send to Then the pull down menu will open see Figure 38 The beam geometry contains three types of entities and all of them should be assigned to the beam layer Therefore the item Also lower entities has to be activated and the command Volumes should be chosen After selecting the Volumes in the pull down menu the geometry which should be send to the beam layer can be selected see Figure 39 The pressing of the Finish button will complete this command ATENA GiD 30 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry 20 63 2218 m 9 Glen Dil version s LayerO 65 1 After pressing Send to button the pull down menu will appear Rename alphabetic Send To v Close v Also lower entities Points 2 The option Also lower ge entities has to be active B n Dimensions 3 Then the Volumes should Es be selected GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry SEE VIER t LA i em Selected volume of the beam this volume will be assigned to the beam layer after the pressing of the Finish button 2 9 WV E H Enter Volumes to change them and lower entities to layer beam Added 1 new volumes to the selection Enter more volumes ESC to leave Command Figure 39 The selectio
58. bill pra No Graphs Contour Fill Smooth Contour Fill Contour Lines Contour Ranges Show Min Max Display Vectors Iso Surfaces on CD CH 4 amp wh Nec we E Stream Lines Graphs Result Surface wo w owe wo E E E cwn cwn 0o o9 GPS E Deformation 4 Line Diagram k 200 Results read new format Selected new analysis and step Command Figure 168 The selection of the step which should be post processed 117 Tutorial By the clicking on the Contour fill icon S or by the selecting the command from main menu View results Contour Fill CRACK WIDTH CODI crack width can be displayed like in previous chapter see Figure 169 GiD AtenaV4 Static 2D and 3D Interface Project AtenaResults Files View Utilities Do cuts BUE Options Window Help No Results 2 2 el le Default Analysis Step DISPLACEMENTS gt COD2 STRAIN gt COD3 STRESS d ICRACK WIDTHI Smooth Contour Fill Contour Lines Contour Ranges Show Min Max Display Wectors Iso Surfaces T gt 4 Stream Lines Graphs Result Surface s Deformation T FT um up FF FF FF FF Er SU Line Diagram y COD1 0 0005707 0 00050729 0 00044388 0 00038047 0 00031706 0 00025364 0 00019023 The message window shows maximum pitis and minimum crack width Contour Fill of CRACK WIDTH COD1 Selected new analysis and step Contour Fill COD1 Min 0 Max 0 000570 Command Figu
59. boundary special conditions Therefore t 1s necessary to return back to GiD graphical interface and defined fixed contacts AtenaWin can be simply closed without any savings of data and then it is necessary to return back to the GiD graphical interface and define the missing contacts It should be noted that this problem is a direct consequence of the modelling approach that was chosen in the previous section In this tutorial the geometry is created by three individual and separated volumes In such a case contacts have to be added manually If the corresponding surfaces of the steel plates would be also parts of the geometry of the beam all parts of the structure would be connected and no special condition would have to be defined ATENA GiD 92 AtenaWin M CCStructures Static analysis Geometry LER File Edit View Window s Input Output Draw Properties Application Help SUSAR OR MSP Resse PHBH BE Fahr THR eR OLM arn gael E Set 1 ConvergenceMonitor EX E Geometry DER Convergence criteria 1 4 LEGEND 2 Geometry 1 0000000 0 7500000 S 9 S 00 5000000 E 3 v a 0 2500000 T Z Max U_x 00024 Mim U sx 000018 ax Uy 000015 Min Uy 00011 Max U_z 009075 Mm U_z 000092 0 5000000 p 0 7500000 1 0000000 MuX 13 v gt Tm 0 X lt E 3DBeam 31 7 2009 msg PES of ignored superfluous contradictory 0 012 5 5e 017 NR of added superflu
60. d 3 3 2 Loading and supporting steel plates Before definition of the loading and supporting plate material it is a good idea to display only the plate layer Loading and supporting steel plates are made from steel material It is assumed that the load level will not be so high to cause any plastic deformation in the plates Because of that an elastic material will be used for the steel plates The material definition starts with the command Data Materials SOLID Elastic in the main menu see Figure 63 45 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam layers Files View Geometry Utilities RE Mesh Calculate ATENA Help p Problem type plates Gil Version 9 Conditions Interval Data E _ LID Concrete tes From Dei SOLID Soi Rock C Name yolrult B Data units SHELL Concrete Steel beam BEAM Concrete bars of n 1D Reinforcement 4 Local axes Interface Spring Interval Layer Touse v plates On Off A n E E Sel New Delete Rename alphabetic To back v Send To v Close Layer beam is OFF Command Figure 63 The selection of the command for the definition of the plates material After the selection of this command the window for the definition of the SOLID Elastic will appear seeFigure 64 SOLID Elastic Elastic 30 m CS X Basic Miscellaneous Element Geometry Maternal Prototype COSDE
61. d can be executed by the selection of the icon or by the selecting the command Data Conditions in the main menu The contact condition definition for master top beam is depicted in the Figure 139 Conditions a x LE Fixed Contact for Surface ar 2 The contact condition is applied on the surface therefore this icon should be Type af Cond Master selected Contactame Top EN By the clicking on the arrow the available conditions will appear The option Fixed Contact for Surface has to be selected For the beam the Master should be selected The Contact Name can be Top By this button this condition can be assigned to the geometry see Figure 140 Assign Entities Draw Unagsign Close Figure 139 The master top beam contact condition Parameter input Fixed Contact for Surface Type of Cond MASTER Contact Name Top 95 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 31 7 2009 Files View Geometry Utilities Data Mesh Calculate ATENA Help 1B GiD version s pomi l The selection of the surface S ED er fw the contact condition TR fl fi 2 77 LY UN Fs 2 The button Finish has to be selected to complete contact condition definition Enter Surfaces with new values Added 1 new surfaces to the selection Enter more surfaces ESC to leave Command Figure 140 The selection of the surface for the master top beam contact condition Next
62. d size automatically to 62 entities Mesh Generated To see it use command meshview Command Figure 120 The generated mesh EN AtenaWin COFEModelExc Number of elements in DEMO version is limited to 300 Source line 715 File Atena i SaurcesMncludeYc CFEMadal CCFEMadel h last modified at Mon Apr 20 11 59 19 2003 Figure 121 The limitation of demo version of ATENA In this example the beam will have structured brick mesh and steel plates will be meshed with tetrahedral elements 3 6 1 Notes on meshing The finite element mesh quality has a very important influence on the quality of the analysis results the speed and memory requirements Refining only the important parts can save a lot of processor time and disk space A bad mesh like a single layer of volume elements in a region where bending plays a significant role can produce very wrong results see the Mesh Study example in the ATENA Engineering Example Manual A minimum of 4 6 elements per thickness is recommended for at least qualitative results in bending Alternatively shell elements may be used see section Shell Material in the User s Manual for ATENA GiD ATENA GiD 84 3 6 2 Structured mesh Because this example should be possible to create in demo version the mesh of the beam volume will be structured and limited to 300 elements The finite element size should be 5 elements over the beam height 2 elements over the beam width and 16 e
63. ding and supporting steel plates a ee 15 3 2 3 Remiorcement OAT ersen smi abu E om oni diatec hd diio IRR 27 3 2 4 Layee c P T cc NEN 30 3 3 Material parameters u IE eenean N saanane eeoa eeban eseti eiai eies 39 3 3 1 Concrete De ee ee a ee lese LUC ePi E LIE ned 39 332 Eoadinp and supportns Steel plates aan ae an 45 3 9 0 Re einlorcement WATS eH 50 3 4 Boundary Conditions oeieeei tese e oEREAPE NS NER ARE NTC UE EAS VA TUS K0n Oo VE VE CERE PAS Sg de ER VEU ERAS N SOY E CEA A here 56 3 4 wv 1927074 ee ee TT HERR HC 56 3 4 2 BEPC MEN rannin n E UU 62 3 4 3 SVEMIMCU y CORO IL LOB re uu M A M ers 70 3 4 4 Mono ota toa etate cei ci aM eL MM LM e CH MS 73 3 5 Intervals Loading HiStOry ERR RTT EMT 80 3 6 Mesh generationis anal Moe e IS E ANS EREE QUAE EPOD RESPON NR OY 82 3 6 1 NOLES Of Meshing en e e lesen 84 3 6 2 CE EE Deere een ie es ee a 85 4 FE NON LINEAR ANALYSIS cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccscccccs OD 4 1 Missing COMAIS iaioa D EEEO EEEE EO enden 94 4 1 1 Master Top beam Condition s o een 95 4 1 2 Save Lop plate condito ie a a a a a a e eus Dude 98 4 1 3 Master bottom beam and Slave bottom plate ConditiONns ccccccesseessessesesseesssssessssssseeeeaas 100 4 2 AtenaWin interface description eesesesessssscsccccceccececesooocssocccccceceececoosossesecececceceseosssssssesececeeoeo 10
64. e Rotate Point In Surface Pan Tangent In Line m Normal In Surface za Redraw Are Center Render Options Label Number Layer Escape Image to clipboard sf Quit 0 1521 y 0 4567 J z 0 Command Figure 9 The Join function in the Mouse menu After selecting the join function the mouse cursor will change to this shape El Then after clicking into a graphical area the nearest point will be selected Now all points can be connected by lines into the rectangle see Figure 10 The create line function should be finished by pressing ESC key GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files Yiew Geometry Utilities Data Mesh Calculate ATENA Help EN 73 ge 23 6d 218 1 9o Soc Dil Version s cgi A n al P e e Leaving line creation 4 new lines 4 new points Enter points to define line ESC to leave Command Figure 10 The lines connected into a rectangle 11 Tutorial The GiD distinguishes four types of entities point lines surfaces and volumes In our case there are already two entities points and lines Lines define a rectangular boundary but it is not a surface until a surface is defined Therefore the next step is to create a surface using the already existing lines It is done by selecting Geometry Create NURBS surface By contour in the main menu and then selecting all lines defining the required surface in the graphical area see Figure
65. e noted that not all features of ATENA GiD system are described in this manual For more details about the data preparation and post processing the user is encouraged to read the manual of the program GiD and ATENA GiD manual 2 2 STARTING PROGRAM Before using the ATENA GiD system it is necessary to install it on your computer The programs GiD and ATENA can be installed using the standard ATENA installation At the end of the installation the user must select the installation of GiD and ATENA GiD interface After that your computer should be ready to run the example problem described in this document The installation process s described in detail in ATENA GiD manual 2 In order to start a nonlinear analysis in ATENA GiD system first the program GiD is started The recommended version is 9 0 4 or newer the oldest supported version 1s 7 7 26 The program GiD can be started from the start menu of your computer using the following path Start All Programs CervenkaConsulting ATENA Science GiD This opens the program GiD which is used for the preparation of the numerical model of the analyzed structure This process is described in the subsequent Chapter 3 The execution of the nonlinear analysis is described in Chapter 4 and the post processing in Chapter 5 ATENA GiD 2 3 PRE PROCESSING 3 1 Introduction This chapter explains the basic steps which are to be performed in order to define a complete geometrical and the
66. e the USense button is chosen the program asks for the number of the divisions Top surface should be divided into two parts see Figure 92 Enter value window Enter number of divisions Cancel Figure 92 The enter value window Parameter input Enter number of divisions 2 ATENA GiD 64 The button OK should be pressed in the enter value window After that the surfaces is divided see Figure 93 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help O06 Q9 55559 e 8 amp Sr Dil Versions BoC beam S 4 i bars d m v plates 65 n Layer To use v plates Dff Color n F 3 Sel New Delete Rename alphabetic To back v Send Tor Close Surface divided Can continue Select surface to divide Command Figure 93 The divided top surface 65 Tutorial Now the middle line can be divided into two parts It can be done by executing command Geometry Edit Divide Lines Num Division or by the iconii After the execution of this command the enter value dialog will appear Here the number of required divisions is to be written The line should be divided in two divisions see Figure 95 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files view Deiner Utilities Data Mesh Calculate ATENA Help eS an lt View geometry e Qo SX plates o x 2 beee Create gt e p
67. ear The E DISPLACEMENTS option Monitor for point has to be Dux selected Div By the clicking on this button the several M Dirz options will appear The option Draw Each Iteration DISPLACEMENT has to be selected Monitor ame Deflection The monitor point will monitor reactions in the Z direction therefore this checkbox has to be selected The name of the top plate monitor will be Deflection 3o rH i Assign Entities Draw Unassign By this button the monitor can be assigned to the geometry see Figure 112 Close Figure 111 The second monitor condition definition 77 Tutorial Parameter input Monitor for point Output Data DISPLACEMENT Dir Z Monitor Name Deflection m By clicking on the icon zi the created condition can be drawn After clicking on that icon the monitor condition will be displayed in the middle of the beam see Figure 113 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help bil versions Version 9 Conditions plates Layer To use v beam 1 The selection of the point for the monitor condition Wmm s New Delete Rename alphabetic To back Send Tor Close 2 The button Finish has to be selected to complete monitor condition Enter Points with new values Added 1 new points to the selection Enter more points ESC to leave Command Figure 112 T
68. ected to complete extrusion Enter Surfaces to Copy x 0 7603 Added 1 new surfaces to the selection Enter more surfaces ESC to leave y 0 5588 n z 0 Command GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Geometry Utilities Dat Mesh Calculate ATENA Help 6 BI SG 218 519 amp Slew Gil version s E The steel plate N rn Entities type Surfaces z j volume defined by Yj Transformation Translation x light blue prism j 7 First point N Num x 10 y 0 e z 0 Second point Num x 0 y D e z 00 Duplicate entities Do extrude Volumes x Create contacts v Maintain layers Multiple copies 1 Select Cancel Selected 1 Surfaces x 0 7603 Geometry has 1 new volumes 5 new surfaces 8 new lines 4 new points Leaving y 0 5588 si 2 0 Command Figure 29 The volume of the top steel plate ATENA GiD 24 3 2 2 2 Bottom plate The bottom steel plate w ll be created by copying of the top plate The copy starts by command Utilities Copy in the Main menu The definition of the extrusion is depicted in the Figure 30 After the definition of all parameters the Select button should be pressed Then the volume required for the translation can be selected in the graphical area see Figure 31 It 1s important to select the correct volume representing the top plate After the selection of volume it is necessary to press Finish b
69. ed using the command Geometry Create Point in the Main menu In order to create a rectangle four points are needed Each point is defined by three coordinates x y z The coordinates of points should be written in the command line in the bottom part of the main window The coordinates can be written all together separated by comma A dot represents a decimal point The definition of coordinates of each point is completed by ENTER In the command line it is very handy to use the key arrow up and down on your keyboard to view previously entered coordinates These previous coordinates can be changed and entered again ATENA GiD 8 In th s case the following points should be entered Parameter input Coordinates of points 1 0 0 0 2 1 275 0 0 3 1 275 0 19 0 4 0 0 19 0 NOTE The table named Parameter input will guide you through the whole tutorial This table shows the parameters which should be entered There are predefined default parameters in some dialog windows The table Parameter input shows only parameters which should be changed After entering coordinates the points appear in the graphical area see Figure 7 It is useful to enlarge the model such that it fills the whole screen For that the command View l l bal l Zoom Frame inthe main menu or the Frame icon can be used see Figure 8 GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Fies view Geometry Utilities Data Mesh Calculate AT
70. er input Enter number of cells to assign to lines 87 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam intervals Files view Geometry Utilities Data Mesh Calculate ATENA Help 2 99 e m e e L beam Dil Version 3 Select lines to define structured mesh Added 1 new lines to the selection Enter more lines ESC to leave Command Figure 127 The selection of the height lines Next step is to assign the number of element along the width of the beam The 2 cells should be defined to these lines Procedure is same like in previous two examples But when the first line will be selected program will automatically select only another two lines The last line of the width is divided into two parts Therefore it is not selected by program and another number of cells has to be assigned to these two lines GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam intervals Files View Geometry Utilities Data Mesh Calculate ATENA Help i cmn Z 53 mer Select lines to define structured mesh Added 1 new lines to the selection Enter more lines ESC to leave Command Figure 128 The selection of the width lines ATENA GiD 88 Last step is to assign 2 cells to the each of the lines of the bottom right edge of the beam See Figure 129 and Figure 130 Enter value window Enter number of cells to assign to lines Figure 129 The number of cells for bottom right edge of the beam
71. ere the largest vertical displacement can be expected The displacement in the z direction should be evaluated at this location However there 1s currently no suitable point available at that location First the geometry of the point has to be created It will be done by the division of the down right edge of the beam Before starting it 1s better to display only the beam layer and zoom at the down right edge of the beam The process of the line division will be same like in previous sections The division command can be executed by the icon fa or from the main menu by Geometry Edit Divide Lines Num Division see Figure 108 After the execution of this command the enter value window will appear There the number of divisions should be written The line should be divided in two divisions see Figure 109 75 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Deiner Utilities Data Mesh Calculate ATENA Help OD G Yew oom lt Bien Er 4 Delete P HT a Hove pain Lines operations gt Polylines Near point Create gt Swap arc Surfaces gt Parameter Polyline Volumes Relative Length SurfMesh Length Edit NURBS Convert to NURBS Simplify NURBS Hole NURBS surface Collapse Uncollapse VI TEE LA Intersection Surface boolean op Volume boolean op Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to rota
72. erval data window will appear and the data which should be defined are depicted in the Figure 116 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam intervals Files View Geometry Utilities PASA Mesh Calculate ATENA Help Problem type gt gt 2 53 Conditions Materials gt iz Problem Data gt Data units Interval Local axes X Pick LEFTMOUSE to desplace view ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to desplace view ESC to quit Command Figure 115 The Interval data command ATENA GiD 80 There is a predefined displacement 0 0001 m on the structure in this interval This means that it is necessary to increase the prescribed displacement approximately 40 times to reach the failure of the Structure Therefore the Interval Multiplier will be set to 40 in this case Interval Data 1 Basic Parameters Eigenvalue Analysis Iw Interval ls Active Load Name Load Interval Multiplier 40 It is a good practice in the rj nonlinear analysis to always Number of Load Steps 50 apply the load gradually Store Data for this Interval Steps SAVE ALL 3 Therefore the interval will be Fatigue Interval ND divided into 50 load steps in E this case This button should be selected to complete interval data definition Then this window can be closed Interval Starting Time Iw Delete BE Data After Calculation User Solution Parameters
73. escribes definition of the geometrical model Because the beam is symmetric only half of the beam will be created in this example The geometrical model of this half beam see Figure 6 1s composed of three 3D regions and two reinforcement bars In GiD the 3D regions are called Volumes Therefore the geometrical model contains three volumes beam loading and supporting plates The reinforcement is modelled by two straight lines The definition of these geometrical entities 1s described in the subsequent chapters It is useful to use the layer function for the definition of the geometrical model It 1s a function where particular parts of the model can be placed on different layers and then displayed hidden or locked etc In this geometrical model three separate layers will be created beam layer plates layer and reinforcement layer 0 165 0 100 0 115 ee ca en ce c2 l id 0 050 Zs 0250 B 100 0 925 0 050 19 090 10 050 1 275 0 190 Figure 6 The geometrical model is composed from three volumes beam and two plates 0 030 0 320 3 2 1 Concrete beam A concrete beam forms the main part of the example This section describes the definition of the three dimensional beam geometry The geometry of the beam will be created by an extrusion of a rectangular surface That will be defined by four lines First step 1s to create points which will be later connected into a rectangular surface A point is creat
74. ess should be selected see Figure 164 Process info e Process 3DBeam 31 7 2009 started at Fri Jul 31 15 10 51 has finished Postprocess Figure 164 The button Postprocess should be pressed But before any post processing features can be used the results from the AtenaWin have to be imported into GiD Ps It is done by the clicking on the Import results from AtenaWin icon Then the process of importing will start see Figure 166 and when it 1s finished the model changes its colours see Figure 167 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 12 8 2009 structured mesh Files View Utilities Do cuts View results Options Window Help 28er amp v B amp 2 A Gu results from AtenaWin into GiD wd Co P EMI Ir ar NEE IO DING gt lt a N P J f n jo hf IR 5 2 1 5 i TO FADO 7 P m e z k Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Command Figure 165 The GiD postprocessor interface 115 Tutorial lt GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 12 8 2009 structured mesh aag c AtenaConsole AtenaResults inp ojx n er Job ATENA Closing output file 13 8 2009 18 34 44 Closing output file 13 8 2669 18 34 44 Closing output file 13 8 2869 18 34 44 XS A yh 4 A es IM z k Readi
75. f the top plate The width of the plate s 0 100 m Therefore the second line will be translated by 0 100 m The parameter definition 1s depicted in the Figure 20 After the definition of all parameters the Select button should be pressed Then the line required for copying can be selected n the graphical area see Figure 21 After the selection of the line it is necessary to press Finish button to complete the translation see Figure 22 Entities type lies T Parameter Input 2 EII Entities type Lines Fret point Transformation Translation in First point x 0 0 00 y 0 0 40 100 z 0 0 p Second point x 0 100 y 0 0 Z 0 0 Duplicate entities Do extrude No r Do extrude No W Maintain layers Multiple copies 1 Select Lancel Figure 20 The parameter definition ofthe second line 19 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help 8 BISGLlBFAlD 9 Slow Lil version s x Entities type Line Y format or Trar on This line should be selected for the translation Duplicate entities Do extrude In 7 Create contacts The button Finish has to be IV Maintain layers selected to complete translation na Finish Press Finish to end select Enter Lines to Copy D 7503 Added 1 new lines to the selection Enter more lines ESC to leave y 0 5588 z 0 Command
76. he selection of the second monitoring point ATENA GiD 78 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help bil Versions Conditions E bars d B Monitor for Point RJ lat eo 5 plates Dutput Data DISPLACEMENTS M DirX Dir Y Iv Diz Draw Each Iteration MonitorName Deflection Layer Touse beam On Off Color A n nr E Sel New Delete Rename alphabetic Assign Entities To back v Send To v Close Close Assigned 1 new Points to condition Monitor_for_Point press escape to leave Command Figure 113 The second monitor condition Now all boundary condition should be defined For control it is recommended to display m boundary condition It can be done by clicking on the icon P see Figure 146 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors SEE Files View Geometry Utilities Data Mesh Calculate ATENA Help n z Z Her Load monitor and displacement condition condition Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Deflection Command monitor Figure 114 Allboundary conditions 79 Tutorial 3 5 Intervals Loading history This section describes the definition of the loading history for the analys s of Leonhardt s shear beam The loading his
77. he window for the definition of the New SOLID Elastic material Parameter input Enter new SOLID Elastic name Plates 47 Tutorial Then the new material should be selected and then the parameter definition can be changed by clicking on the icon g In this case of the elastic material the default parameters will be left unchanged SOLID Elastic Plates m CS gt Basic Miscellaneous Element Geometry Maternal Prototype CC3DE lasti sotropic Young s Madulus E 2 0E 5 MPa Poisson s Hatia MLI 0 3 Unassign Exchange Figure 67 The default Basic parameters of the elastic material SOLID Elastic EJ Paes BOE vg Basic Miscellaneous Element Geometry kton Hhao D ensity D 0025 3c m Thermal Expansion Alpha 0 00001 2 Assign Draw Unassign Exchange Llose Figure 68 The default Miscellaneous parameters of the elastic material ATENA GiD 48 SOLID Elastic Pees ZOX Basic Miscellaneous Element Geometry Geometical Non Linearty LINEAR ul Idealisat on 30 Assign Unassign Exchange Figure 69 The default Element Geometry parameters of the elastic material When the elastic material parameters are defined the material can be assigned to the geometry It is done by selecting the button Assign in the bottom of the material window After selecting this button the several options will appear In this case the Plates material will be assigned to the loading and support
78. ich the program communicates with a user An m i T eod This is the PROFESSIONAL Version The password for this host is valid and will expire on 15 Aug 2009 Command Figure 2 Graphical user interface of ATENA GiD 3 1 1 1 Problem type The GiD is a general purpose pre and post processing tool for variety of numerical problems and analysis software The GiD can be customized to create input data for basically any finite element software The customization is done through the definition of various problem types Each problem type represents certain customization Therefore it 1s important to select an appropriate problem type at the beginning of the work In this case ATENA problem type has to be selected The problem type definition must be done before starting input of data Executing this command later may cause losing of all material and load definition The problem type is selected from the Main menu Data Problem Type AtenaV4 Static Once this is selected ATENA specific icons will appear in the main window see Figure 3 ATENA GiD 4 GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities PASA Mesh Calculate ATENA Help ansysb5 bil Version 9 Conditions Examples Materials Transform Dynamic Interval Data Internet Retrieve iz Problem Data gt Load Data units Unload v rel Stato Debugger E Interval gt C Transport Local axes gt Starts definit
79. ing steel plates which are represented by volume entities Therefore the option Volumes should be selected Then the volumes of the plates can be selected in the graphical area and the button Finish has to be pressed to complete the assignment GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam layers SEE Files View Geometry Utilities Data Mesh Calculate ATENA Help 12 bil version The volumes of the steel plates have to be selected Layer To use v plates On Off Color A n nr E Sel SOLID Elastic er esf e H Ze R nf WF Basic Miscellaneous Element Geometry MP The button Finish has to be selected to complete assigning of the material Added 1 new volumes to the selection Enter more volumes ESC to leave Finish Added 1 new volumes to the selection Enter more volumes ESC to leave Command Figure 70 The assigning of the Plates material to the volumes The steel plate material was created and assigned In the last section the reinforcement material will be created 49 Tutorial 3 3 3 Reinforcement bars Before definition of the reinforcement material it s good to display only the Bar layer The material definition of the reinforcement starts by selecting the icon gt or with the command Data Materials 1D Reinforcement see Figure 71 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam layers Files View Geometry Utilities PASA Mesh Calculate AT
80. ion of concrete material Starts definition of reinforcement material Draw all materials Define boundary condition Load amp Supports Draw boundary condition Load amp Supports Start ATENA static analysis using AtenaWin 38 conditions read 17 materials read Command Figure 3 Problem type menu and basic ATENA icons It 1s also recommended to explore the help of the program GiD This can be found in the Main menu or by pressing Fl on your keyboard It is also much recommended to save file and also regularly save created model during the formation of the geometrical model Saving is done by selecting File Save or Save as The name of the document can be chosen for example 3DBeam 3 1 1 2 Problem data Before starting the model definition it 1s advisable to define some global analysis parameters It is done by the command Data Problem Data Problem Data in the main menu see Figure 4 5 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities PASA Mesh Calculate ATENA Help Problem type gt u 2 pil version y Conditions Materials gt Interval Data Data units Post data Interval gt Local axes gt S J w Co ie The Problem Data can be also executed by this icon P 5507 e C a b ee lt Command 38 conditions read 17 materials read Figure 4 The command Problem Data After selecting this command the
81. last sotropic Young s Madulus E 2 0E 5 MPa Poisson s Hatia MLI 0 3 Assign Unassign Exchange Figure 64 The window for the definition of the SOLID Elastic The process of the Elastic material creation 1s very similar to the creation of the Concrete material First it 1s important to copy the material definition of the already existing ATENA GiD 46 material and save it under a new name There is only one elastic material and it will be chosen to be copied for the material of this example The Elastic 3D should be selected and then the icon New SOLID Elastic should be pressed The selection of this material and selection of the New SOLID Elastic icon are depicted in the Figure 65 SOLID Elastic Elastic 3D 9 083 Elastic 3L l The pull down menu with options of predefined materials will appear after the clicking on the arrow In this case the Elastic 3D should be chosen 2 This 1con starts the creation of the new material Once this icon is selected the New SOLID Elastic window appears see Figure 66 Exchange Figure 65 Description of the new elastic material creation After the selection of the icon New SOLID Elastic the new window for the definition of the new material name will appear see Figure 66 Here the name Plates should be written and then it s necessary to press OK button to complete this command New sOLID Elastic Enter new sOLID Elastic name Plates Cancel Figure 66 T
82. late ATENA Help 3 92 f Problem type dini x 2 53 bil rone Conditions SOLID Elastic Interval Data SOLID Steel b Problem Data SOLID Soil Rock Data units SHELL Concrete Steel BEAM Concrete 1B Reinforcement plates Local axes gt Interface Spring Interval gt Layer To use w beam On Off Color A n E 3 Sel New Delete Rename alphabetic To back v Send To v Close Command Figure 51 The selection of the command for the definition of the concrete material After the selection of this command the window for the definition of the SOLID Concrete appears see Figure 52 39 Tutorial SOLID Concrete Concrete EL m CS 2X ELS Basic Tensile Compressive Miscellaneous Element Geometry Generate Material Select checkb N E lick changes buton to generate the material Strength Clase 12715 and i k update Safety Format Design Assign Unassign Exchange Figure 52 The window for the definition of the SOLID Concrete First it is important to copy material definition of the already existing material and save it under a new name In this case the new name shall be Beam and it should be created based on the predefined material Concrete EC2 After the selection of the predefined material i e material Concrete EC2 the icon New SOLID Concrete o should be selected
83. lected After the proper selection the pink selected surface will change to the red colour GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help The pink rectangle changes to the red colour after the correct selection First point Second point The button Finish has to be selected to complete the extrusion Enter Surfaces to Cop Added 1 new surfaces to the selection Enter more surfaces ESC to leave Command Figure 13 The selection of the surface for the extrusion ATENA GiD 14 To see the extruded volume it is possible to use Rotate Trackball icon 6 or holding left mouse button SHIFT key see Figure 14 GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help Qo G DA ee Qo Su Laert Entities type Surfaces z Transformation Translation First point Num x 0 0 y 10 0 e z 00 Second point Num x 0 0 y 0 0 e z 0 32 Duplicate entities Do extrude Volumes v Create contacts Iv Maintain layers Multiple copies 1 Select Cancel The light blue prism defines a volume Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms x 1 854 Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Command Figure 14 The extruded volume the light blue prism defines a volume 3 2 2 Loading and supporting steel pla
84. lements over the beam length It should be noted that such a mesh 1s not an optimal one for this problem type but our mesh size is limited by the capacity of the demo version of the program In real structural problems finer meshes should be used The structured mesh is done by command Mesh Structured Volumes in the main menu GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam intervals Files View Geometry Utilities Data MAUS Calculate ATENA Help a GX 2 M Sions _ Lines d SemiStructured Surfaces gt Cartesian TI Boundary layer Quadratic elements Element type Mesh criteria Reset mesh data Draw at Generate mesh Erase mesh Edit mesh I i error View mesh boundary Create boundary mesh Mesh quality ae ami Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Command Figure 122 The Structured mesh command Once this command is executed the volume which should be structured has to be selected see Figure 123 After the selection the program asks for the number of cells which should be assigned to the lines see Figure 124 85 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam intervals Files View Geometry Utilities Data Mesh Calculate ATENA Help N G ee rs lt gt X Sx beam 52 bil Version 9 X Select volumes to define structured mesh Added 1 ne
85. lied on the surface therefore this icon should be selected Coordinate System GLOBAL i Constraint Y Constraint 2 Constraint By the clicking on the arrow the list of available conditions will be offered The option Constraint for Surface has to be selected The X Constraint has to be selected to obtain symmetry condition By this button this condition can be assigned to the geometry see Figure 103 Assign Entities Draw Unagsign Close Figure 102 The symmetry condition definition Parameter input Constraint for Surface Coordinate System GLOBAL X Constraint m BEE By cl cking on the icon the created condition can be shown n the graphical area After clicking on that icon the symmetry condition will be displayed on the middle surface of the beam see Figure 104 71 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors SEE Files View Geometry Utilities Data Mesh Calculate ATENA Help 53 ci Name IjO FJU Tr B Mi v plates 65 B 1 The selection of the surface for the symmetry condition Layer To use v plates On Off Color n E 3 Sel New A NE Delete Rename alphabetic Finish To back v Send To v Close SY E Cu 2 The button Finish has to be selected to complete symmetry ke condition definition Enter Surfaces with new values Added 1 new surfaces to the selection Enter more surfaces ESC
86. line 17 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help OG 2 SSL BF SR Son This line should be selected for the translation The button Finish has to be selected to complete the translation Dil Versions E First point Num 0 0 gt z 00 Second point Duplicate entities Do extrude No v Create contacts IV Maintain layers Multiple copie Finish Press Finish to end selecti e Enter Lines to Copy Added 1 new lines to the selection Enter more lines ESC to leave E x 0 7603 Command Figure 18 The selection of the line which should be copied GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help 2 525259 8 m QD amp Sam The copied line Dil Versions Entities type Lines z Transformation Translation z First point Num 00 y 0 0 e z 00 Second point Num x 0 115 y 0 0 e z00 Duplicate entities Do extrude lo x Create contacts V Maintain layers Multiple copies 1 Select Cancel Selected 1 Lines Geometry has 1 new lines 2 new points Leaving al x 0 7603 y 0 5588 z 0 Command Figure 19 The new copied line ATENA GiD 18 Now the new line will be copied again to create the second edge o
87. low after the clicking Then the Draw all materials iconkJ can be used See Figure 80 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam layers Files View Geometry Utilities Data Mesh Calculate ATENA Help SELL BA 49 Sho 82a il version s Layer To use w bars On Off Color ni n ri n Sel New Delete Rename alphabetic To back v Send To v Close L Beam u Plates The two pink dots represent the B sars ETT reinforcement bars press escape to leave Command Figure 80 The drawn assigned materials 55 Tutorial 3 4 Boundary conditions In this chapter the boundary condition are described The analyzed beam is supported at the bottom steel plate in the vertical direction There the support condition will be defined Since only a symmetric half of the beam is analyzed t is necessary to enforce the fixed condition along the right side of the beam It means that the horizontal displacements along x axis should be equal to zero The beam is loaded at the top steel plate The object of this example is to determine the maximal load carrying capacity of the beam It means that t should be possible to trace the structural response also in the post peak regime The easiest method to accomplish this is by loading the beam by prescribed displacements condition at the top steel plate It is important to monitor forces displacement or stresses during the non linear analysis The monitor data are im
88. m the program developer or distributor It is possible to create and analyse the example problem described in this tutorial in demo version of ATENA GiD Because of that a rather coarse finite element mesh is used It 1s recommended that in the analysis of real engineering problems users use sufficiently fine meshes and f needed a mesh sensitivity study should be performed The step by step demonstration is performed on an example of simply supported beam which is loaded by two loads as it is shown in Figure 1 The problem is symmetric around its vertical axis therefore only one symmetric half of the beam will be analyzed It is recommended to print out this version in order to easily follow the instructions In case of printing it is advisable to use both sided and colour printing P P 1 ec steel plates Top plates Concrete B 35 Reinforcement bars 2x diameter 26 As 1060 mm2 e Hue a Supporting steel plates Bottom plates 0 300 0 810 0 330 0 810 0 300 2 550 0 165 0 100 0 115 0 030 0 050 A 0 250 100 0 925 1 275 0 190 0 050 O90 0 050 Figure 1 Geometry of the structure 1 Tutorial The steps necessary for the data preparation non linear analysis and post processing are depicted on subsequent figures which show the computer screen for each step and the corresponding user action There 1s always also a short description for each figure It should b
89. n a finite element model for the non linear FE analysis by ATENA The purpose of the geometrical model s to describe the geometry of the structure its material properties and boundary conditions The analytical model for the finite element analysis will be created during the pre processing with the help of the fully automated mesh generator The definition of the geometry starts with the creation of geometrical points These points are later connected into boundary lines The surfaces are defined by selecting appropriate bounding lines Volumes can be formed either by extrusion of surfaces or manually by selecting all bounding surfaces Three dimensional regions are modelled by volumes in GiD The reinforcement 1s modelled as a line These reinforcement lines are not usually connected to any surface or volume but they usually lie inside the volumes entities that form the concrete structure After creation of the geometry material properties should be defined and assigned to individual volumes Boundary conditions are used to define supports and loads The boundary conditions and loads are defined in GiD with the help of Intervals Interval represents a set of boundary conditions and loads that are applied in a specified number of steps An appropriate definition of intervals can be used to specify a complete loading history In ATENA analysis it is always useful to define monitoring points The monitoring points are used to see the evolu
90. n of the volume which should be sent to the beam layer 31 Tutorial The buttons On or Off activates the display of the content of the chosen layer It can be seen or hidden The yellow bulb next to the name of the beam indicates the display status of the layer Also direct clicking on the bulb for an individual layer can switch between the display modes The LayerO the layer which was already there before creating the beam layer should be selected and then the button Off The yellow bulb will change to the grey colour It means that all its content should not be displayed The Layer still contains the geometry of steel plates and reinforcement Therefore these geometries should disappear in the graphical area after deactivation of the LayerO see Figure 40 It should be possible to see only the beam and it assures that the beam geometry was successfully sent to the beam layer gt GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry PES GG sea Bm eo Sem bil Versions Layer beam is ON Layer to use beam Command Figure 40 The steel plates and reinforcement geometry will disappear after deactivating of the Layer ATENA GiD 32 3 2 4 2 Barlayer The next step s to create a bars layer This layer w ll be created with the same procedure like for the previous beam layer First the beam layer should be hidden and LayerO should be displayed It is done by selecting the beam layer and pressing the but
91. nd save it under a new name In this case the new name will be Bars The predefined material Reinforcement EC2 should be chosen for the copying After the selection of the predefined material the icon New 1D Reinforcement should be selected After the selection of the New 1D Reinforcement icon the new window for the definition of the new material name will appear see Figure 73 Here the name Bars should be typed and then it 1s necessary to press OK button to complete the command New 1D Reinforcement Figure 73 The window for the definition of the New 1D Reinforcement Parameter input Enter new 1D Reinforcement name Bars 51 Tutorial This new material should be selected and then it is possible to change the parameter definition The parameters of the new material Bars are predefined according to Eurocode 2 In this example the Mean Yield Strength should be 560 MPa and Class of Reinforcement should be A The parameter definition is depicted in the Figure 74 It is very important after all changes are updated to select checkbox Generate Material and do update again Otherwise no parameters will be updated All parameters definition is completed by clicking on the Update Changes icon 2 1D Reinforcement Bas 2 CS x EC2 Basic Reint Function Miscellaneous Element Geometry Type af reinforcement Reinforcement Young s Modulus E 200 GPa 5 The Update changes Characteristic Yield Strength f xk 56d MPa ic
92. nditions Only the name has to be different It s recommended to use contact name Bottom The Figure 145 shows the r ght definition of bottom contact conditions GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 31 7 2009 Files View Geometry Utilities Data Mesh Calculate ATENA Help z pil Semion Conditions gt Ar TN 3 Y bii PWE D Ei Finish Master Bottom 1 0 Master Top 1 0 Slave Top 1 0 E Slave Bottom 1 0 Pick LEFTMOUSE to rotate ESC to quit Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Command Figure 145 The contact conditions m B the clicking in the icon P all boundary condition can be displayed It is a good method for checking if all conditions were properly defined see Figure 146 ATENA GiD 100 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam intervals Files View Geometry Utilities Data Mesh Calculate ATENA Help 8 BISG21B 519 amp sen Dil version s oF First monitor and displacement Top slave contact Bottom slave contact Bottom master contact Second monitor Pick LEFTMOUSE to desplace view ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to desplace view ESC to quit Command Figure 146 All boundary conditions When the contact conditions are finished it is important to generate mesh again After any change of boundary condition and geometry the mesh has to
93. ng 3DBeam 12 8 2009 structured mesh post Postprocess information Results file C Documents and Settings Zdent Plocha T utoria E xample 3D Beam 12 8 2009 structured mesh gid 3DBeam 12 8 2009 structured mesh post res not found gt XY xr Figure 166 The importing of the results from AtenaWin into GiD GiD AtenaV4 Static 2D and 3D Interface Project AtenaResults Files View Utilities Do cuts View results Options Window Help 5325 m1 v Sv U Dil Version s x e 3 d ER XM aC NE GENET IO 2 22 MEM mm T NS ON Zu z k 2 volume meshes and 1 surface mesh read from amp AtenaR esults flavia msh 200 Results read new format Command Figure 167 The importing of the results from AtenaWin were finished ATENA GiD 116 After importing data from AtenaWin the post processing can be started Let s display cracks like in previous chapter 4 4 of FE non linear analysis in AtenaWin First of all it should be checked which step will be post processed It is done by selecting View Results Default Analysis Step AtenaResults2GiD in the main menu or by the Default Analysis Step icon EE From the L D graph Figure 152 it is possible to see that structure failed after 30 step therefore it is good to post process for example step 35 see Figure 168 GiD AtenaV4 Static 2D and 3D Interface Project AtenaResults Files View Utilities Do cuts BN Options Window Help AS No Results
94. nter more volumes ESC to leave Added 1 new volumes to the selection Enter more volumes ESC to leave Command Figure 46 The selection of the volumes which should be sent to the plates layer ATENA GiD 36 If the display of the plate layer s deactivated the volumes of the steel plates should disappear Deactivation is done by selecting the plate layer in the list of layers and then pressing the button Off see Figure 44 The Layer0 which is now active is empty It does not contain any geometry and therefore this layer can be deleted It 1s done by selecting this Layer and by pressing the button Delete After that the LayerO will be deleted see Figure 47 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry a n B BI 559a m amp si 2 1 The Layer0 has to be selected 2 Then the Delete button should be selected to delete LayerO Figure 47 After deactivation of the plates layer the graphical area will stay empty The Layer is active and it does not contains any geometry therefore it can be deleted It is recommended to try to display each layer separately to verify that they contain all required geometry The correct results are shown in Figure 48 Figure 49 and Figure 50 i ok GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry OPIERA 8 sin 18 2 Figure 48 The displayed beam layer contains beam volume 37 T
95. o Eurocode 2 In this example it is necessary to have parameters of concrete class 30 37 and Safety Format should be Mean It can be done by selecting this class parameter and safety format in the material window The process of the class and safety format definition 1s depicted n the Figure 56 It is very important to select checkbox Generate Material otherwise no parameters will be updated All parameters definition 1s completed by clicking on the Update Changes icon T SOLID Concrete Bem O BE ELS Basic Tensile Compressive Miscellaneous Element Geometry iw Generate Material E Vinke 4 The Update changes changes buton to generate the material icon has to be selected Strength Class 30 37 to complete parameter Safety Format Mean definition It is important to read N all help notes 3 The Mean Safety Format should be selected 1 The Generate Material checkbox has to be selected to update any 2 The Strength Class 30 37 parameter changes should be selected Assign Unassign Exchange Figure 56 The description of the class definition ATENA GiD 42 After updating of EC 2 parameters the rest of parameters will change automatically The following pictures show the generated material parameters of concrete class 30 37 See Figure 57 Figure 58 Figure 59 Figure 60 and Figure 61 If needed it 1s possible to modify these generated default parameters However it should be understood that the manual
96. oject 3DBeam geometry Layerd l After pressing Send to button the pull down beam menu will appear LaykrTo use v bars Delete Rename alphabetid To back v Send To v Close V Also lower entities Points Surfaces Volumes Dimensions Layer Layer is ON Created new layer bars Using this Command GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry bil Versions Selected lines of the reinforcement these lines will be sent to the bars layer after the pressing of Finish button Enter Lines to change them and lower entities to layer bars Added 2 new lines to the selection Enter more lines ESC to leave Command Figure 43 The selection of the lines which should be sent to the bars layer ATENA GiD 34 3 2 4 3 Plate layer It is useful to deactivate of the display of the bars layer by click the appropriate yellow bulb or the button Off see Figure 44 The reinforcement lines should disappear _GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry UE A EST lt 0o Lla x 2 53 kae Layer To use v Layer On Off Color n n E r Sel o New Delete Rename alphabetic To back v Send To v Close m Layer bars is OFF a Command Figure 44 The reinforcement disappear after deactivating of the reinforcement layer The last step is to create a plate layer Like in previous two layers it is done by writing the
97. olution of the applied load and beam deflections The progress of the load and deflection is available in the monitors that were defined in the previous Section 3 4 4 Now it will be described how to visualize these monitors during the nonlinear analysis The first step in the visualization of monitors is to open a new graph window by the clicking on the icon L of the Monitor set 2 The window for the graph will appear Monitor set 2 is monitoring after step Monitor set 1 1s monitoring after iteration In this case the monitors were defined as being after steps therefore the Monitor set 2 should be selected The graph parameters are not defined yet therefore this window is empty If the newly created window is selected by clicking inside it the Graph series icon become active see Figure 148 This icon ES Graph series should be selected now and a dialog for the definition of the graph parameters will appear Individual graphs can be created now by the clicking the button New Series see Figure 149 AtenaWin M CCStructures Static analysis Set 2 Untitled graph File Edit view Windows Input Output Draw Properties Application Help BH qa zd x uw ES Ry ix We Le BL X m sesBe AS E Set 1 ConvergenceMonitor J Set 1 ConvergenceMonitor CX el al Graph Windows appears after ononas 0 00077 clicking on the Monitor set 2 icon Lem 029068 0 003 Monitor set 1 icon Monitor set 2 icon
98. on amp see Figure 161 and then by the setting of the crack width and multiplier see Figure 162 This command is completed again by selecting of the Apply button see Figure 163 AtenaWin M CCStructures Static analysis CRACK_WIDTH at location NODES for item COD1 SHa e amp oci cj mj ej www Cu Es Be i 2RE SR OLGA Qh y ele E Set 1 ConvergenceMonitor eU CRACK WIDTH at location NODES for item COD1 EX aussen r A LEGEND gt Convergence criteria 1 4 CRACK_WIDTH 1 0000000 CODl Draw Crack Options Drawing cracks CO Disabled Averaged at element 0000075238 000065833 000056428 000047024 000037619 000028214 0 7500000 O At element s IPs 000018809 Filter For cracks to be drawn 9 40472 005 Max crack level 3 0 Min crack width 0 0001 0 5000000 x Y z Relative error Im Style Width multiplier 5 Max U_x 000024 Mim U_x 000075 Max U_y 996 006 Mim U_y 2 7e 005 Max U_z 000073 Mm U_z 00029 Shift outwards Cancel 0 Apply 0 2500000 Maux X 13 Min X 0 Max 0 19 Min Y 0 M Z 035 Mm z 003 s 3 Maii AE 000075 S S e Min Val 0 S a E s i Time 35 0000 V 4142793 License 4001 vi M m gt 3DBeam inp Sele FP 3DBeam out Sele VP 3DBeam msg BAR BCs statistics before after elimination 0 023 0 041 4e 005 NR
99. on has to be selected Clase of Reinforcement SUN UTER to complete parameter Parameter k 1 05 definition Safety Format Mean First click update changes button to SCs Sees Te 4 The Characteristic Yield ee Strength should be changed to I Generate Material It is important to S60MPA read all help notes 2 The Class of Reinforcement 1 The Generate Material checkbox should be changed to class A has to be selected to generate properties of parameters 3 The Safety Format should be changed to Mean Figure 74 The description of the reinforcement definition In the Basic properties the bar diameter and number of bars can be defined By checking the checkbox Calculator dialogs for the profile definition will appear In this tutorial example the Profile should be 26 mm and number of profiles will stay 1 Then the Update changes icon has to be clicked to recalculate the reinforcement area Then it is necessary to click on the Update changes icon again to save all changes into the material see Figure 75 ATENA GiD 52 1D Reinforcement Bars EC2 Basic Heinf Function Miscellaneous Element Geometry Material Prototype CCReintorcement Heinf 01 Young s Modulus E 200 GPa Calculator ge 1 The Calculator checkbox has to be Profile 26 mm selected to be possible to define profile Humber of Profiles 1 ate click 2x Update z 2 The profile diameter should be changed to 26 mm Area D 0005309291E m I
100. op plate but there is no suitable point at the middle of the beam Therefore the geometry will have to be modified 3 4 4 1 First monitor The first monitor should be located on the top plate and it will be used to monitor the loads that are applied onto the structure It will be applied on the point where the displacement condition is also defined Since the loading is applied as prescribed displacement the applied forces are represented in the finite element analysis as reactions This means that the reaction in the z direction should be evaluated at this monitor The definition of the monitor condition starts by the icon or by executing command Data Conditions in the main menu The monitor condition definition 1s depicted in the Figure 105 Conditions t4 The monitor condition is applied on the a E point therefore this icon should be selected Monitor for Point ids an By the clicking on the arrow the several Output Data REACTIONS options will appear The option Monitor Dix for point has to be selected Dirr W Dire By the clicking on this button the available monitoring quantities will appear The Draw Each Iteratio option REACTIONS has to be selected Monto ame Load The monitor point will monitor reactions in the Z direction therefore this checkbox has to be selected The name of the top plate monitor will be Load By this button the monitor can be assigned to the geometry see Figure 106 Figure 10
101. or item COD1 d Bigg File Edit View Window s Input Output Draw Properties Application Help sh e e8e gt a Rass TEE EEE CH E BAR AW Dee em OLM c elec x m ED CRACK WIDTH at location NODES for item COD1 zIE3 E Set 1 ConvergenceMonitor PE Convergence criteria 1 4 LEGEND cool TR 000071589 000062641 000053692 Model transformation Rotate 000044743 000035795 000026946 180 0 00017897 89486e 005 0 x Y z 180 Track m Relative error o 3 o S 8 Max U_x 000025 Min Ux 0 00077 Max U_y 7 2e 006 Mim U_y 3 1e 005 Max U_z 000078 Mm U_z 00028 Mu X 13 Min X 0 Mx Y 0 19 Mn Y 0 Mx Z 035 Mm zZ 003 Max Val 000072 Mn 0 Time 34 0000 V 4142793 License 4001 i i ai gt E D X 3DBeam out PE PE E 3DBeam msg UE BCs statistics before after elimination 0 0033 0 044 0 035 0 00014 NR 288 288 0 0032 0 046 0 052 0 00015 NR nd master dofs 615 0032 0 039 0 046 0 00012 NR o nt needles BCs O 0 81 0 8 LS Superfluous contradictory BCs 0 uperfluous contradictory BCs O ired 76316 76316 0026 0 03 0 029 7 9e 005 NR 0024 0 41 0 7 0 001 NR 0039 0 13 0 18 0 00051 NR 0031 0 064 0 11 0 0002 NR 0019 0 041 0 038 7 9e 005 NR 0029 0 23 0 41 0 00067 NR 0024 0 075 0 12 0 00019 NR 0017 0 026
102. ous contradictory g 0 023 0 0093 5 7e 017 NR P nemory required 22388 22388 0 026 0 011 3 2e 017 NR required for pure data only 3528 3 0 015 0 0075 5 6e 017 NR 2 number of data chunks per row 2 961 0 032 0 017 2 1e 017 NR 2 data chunks dimension 1 41801 1 4 0 027 0 013 1 1e 016 NR 3 0 03 0 012 3 6e 017 NR 7 0 024 0 0075 4 4e 017 NR matrix profile statistics SkyLine May 0 02 0 0087 7 5e 017 NR x lt lil gt i Mm L OVR LEGEND E Geometry Max Ux 00024 Mim U_x 000018 Max U y 000015 Mn Uy 00011 Max U_z 000075 Mnm U_z 000092 m Max X 13 Nin X 0 Max Y 0 19 Min Y Max Z 035 Mim Z 003 Current time l1 Version 4 1 4 2570 Mi lt m b Ready Analysis completed Lilla Time 1 30 OVR Figure 137 The moved loading steel plate 93 Tutorial There should be Info window in the GiD see Figure 138 This informative window can be closed and the definition of the missing contacts can be started see 4 1 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 12 8 2009 structured mesh Files View Geometry Utilities Data Mesh Calculate ATENA Help SELL 8 6 PR amp ten Gil Version s N VA N Info You can only define Monitors in the first Interval AVAN ADA Info You can only define Truss or Cables in the first Interval AJ Info At the End of Input File is writen information about Load Intervals and Steps
103. portant information about the state of the structure For instant from monitoring of applied forces it is possible to determine if the maximal load was reached or not In summary there are four types of the boundary conditions in this example monitors support displacement and symmetry conditions 3 4 1 Support The analyzed beam is supported at the bottom steel plate in the vertical direction The support condition should be applied to the line This line has to be added into the bottom plate geometry It will be done by dividing the bottom plate surface The steel plates are assigned into the plate layer Therefore the plate layer should be activated and displayed The bar layer can be hidden but the beam layer is better to keep displayed to be able recognize the bottom surface It is also recommended to zoom at the bottom plate Make sure that the zoomed surface is the bottom surface of the bottom plate see Figure 81 and Figure 82 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help ATENA GiD 56 The division of the surface starts with the execution of the command from main menu Geometry Edit Divide Surfaces Num Division or by selecting of the Divide surface icon Ez see Figure 82 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View ein Utilities Data Mesh Calculate ATENA Help OOS View geometry D G Es Z 2
104. re 169 The display of the crack width In the command Contour Fill the pull down menu offers options which can be displayed Currently rather limited set of quantities 1s available however much more result types are available in ATENA To be able to visualize these additional quantities the program has to be switched to pre processing It is done by selecting icon E Toggle between pre and postprocess see Figure 170 After that a dialog window appears and the button OK should be pressed The program switches into pre processing Then the command Data Problem Data Post Data can be selected in the main menu and a window for the definition of the post data will appear see Figure 171 This dialog you can run directly by clicking to icon r in postprocessor ATENA GiD 118 GiD AtenaV4 Static 2D and 3D Interface Project AtenaResults Files View Utilities Do cuts View results Options Window Help SO SSTLBFSLSE AI ap oggle between pre and postprocess Pe 45 gg p puce This con should be selected to switch between pre and post processing ANODE bs 5 7 e COD1 0 0005707 0 00050729 0 00044388 0 00038047 0 00031706 0 00025364 0 00019023 0 00012682 6 3411e 05 0 step 35 Contour Fill of CRACK WIDTH COD1 Selected new analysis and step Contour Fill COD1 Min 0 Max 0 0005707 Post data General Load and Forces Strain Stress hf CRACK WIDTH hf DISPLACEMENTS EIGENVECTORS
105. reated by automatic surface creation ATENA GiD 22 The geometry definition of the top plate will be finished by extrusion of the surface The extrusion s done by the Copy command which appears after selecting item from the main menu Utilities Copy The height of the steel plate s 0 030 m The definition of the extrusion s depicted in the Figure 27 After the definition of all parameters the Select button should be pressed Then the surface required for the extrusion can be selected in the graphical area see Figure 28 After the selection of surface it is necessary to press Finish button to complete the extrusion see Figure 29 Entities type Surfaces Parameter input i Translation iul Entities type Surfaces o m Transformation Translation i First point x 0 0 Second point y 0 0 7 z 0 0 qo ES Second point x 0 0 Duplicate entities y 0 0 Do extrude Volumes 7 z 0 03 Create contacts Do extrude Volumes Iw Maintain layers Multiple copies Select Lancel Figure 27 The definition of the steel plate extrusion 23 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help The red colored selected surface First point Num gt z 0 0 Second point Num i 1 gt z 0 03 Duplicate entities Create contacts IV Maintain layers Multiple copies 1 The button Finish has to be sel
106. soft ensoftinc com www ensoftinc com 127 Tutorial 8 LITERATURE 1 ATENA Program Documentation Part 1 ATENA Theory Manual CERVENKA CONSULTING 2009 2 ATENA Program Documentation Part 8 User s Manual for ATENA GiD Interface CERVENKA CONSULTING 2009 3 ATENA Program Documentation Part 3 ATENA Examples of Application CERVENKA CONSULTING 2005 4 ATENA Program Documentation Part 6 ATENA Input File Format CERVENKA CONSULTING 2009 5 GD Reference Manual version 9 0 4 International Center For Numerical Methods In Engineering CIMNE 2009 6 Leonhardt and Walther Schubversuche an einfeldringen Stahlbetonbalken mit und Ohne Schubbewehrung Deutscher Ausschuss fuer Stahlbeton Heft 51 Berlin 1962 Ernst amp Sohn 7 ATENA Program Documentation Part 7 AtenaWin Description CERVENKA CONSULTING 2009 ATENA GiD 128
107. t is important to read all help notes Assign Unassign Exchange Figure 75 The default Basic parameters of the reinforcement the icon Update changes has to be clicked 2x to change parameters The rest of the reinforcement parameters will be default There is no change necessary see Figure 76 Figure 77 and Figure 78 1D Reinforcement be TS OX EC 2 Basic Heinf Function Miscellaneous Element Geometry Fieinf 01 Yield Strength S 550 MPa Gs 4 Heinf 01 Number of Multilinear values 2 Heinf 01 epsz 0 025 Heinf 01 f2 575 Heinf 01 eps3 0 Reint 01 F3 U Heinf 01 eps4 Reint 01 F4 0 Heinf 01 epsb 0 Reint 01 f5 Assign Unassign Exchange Figure 76 The default Reinf Function parameters of the reinforcement 53 Tutorial 1D Reinforcement he O TS OX EL 2 Basic Reinf Function Miscellaneous Element Geometry kg Hhao Denszity 7850 a m Thermal Expansion 4lpha 0 000012 i Active in Compresion Assign Unassi gn Exchange Figure 77 The default Miscellaneous parameters of the reinforcement 1D Reinforcement EBK EC Basic Reint Function Miscellaneous Element Geometry Mame Heinf Geometncal Man Linearty LINEAR Geom Type NORMAL Elem Type iw Embedded Reinforcement Minimum W Embed Short Bars W Default Application Application from Interval Idealization 10 Assign Unassign Exchange Figure 78 The default Element Geometry parameters of the reinforcement
108. te ESC to quit if present mouse wheel zooms iN a Gil Version 9 C Name I O FjU Tr B 2 beam 4 r bars plates Li e Layer To use Y beam On Off Color A n Fr 3 Sel New Delete Rename alphabetic To back v Send To v Close Command Cancel Figure 109 The enter value window Parameter input Enter number of divisions After the specification of the division number the button OK has to be pressed and the appropriate line is to be selected see Figure 110 After the line is selected the ESC key has to be pressed to complete this command ATENA GiD 76 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files View Geometry Utilities Data Mesh Calculate ATENA Help k 28 lt o Een Layer To use v beam On Off Color a n nr Sel New Delete Rename alphabetic To back v Send To v Close Figure 110 The created second monitor point When the geometry for the monitoring point is created the monitor condition can be defined Conditions command can be executed by the Data Conditions in the main menu or by the icon B The second monitor condition definition is depicted in the Figure 111 The monitor condition is applied on the Conditions point therefore this icon should be selected Y lc se a A USE IE By the clicking on the arrow the choice of Monitor for Point n ki available point conditions will app
109. ted by holding SHIFT key and using mouse scroll In that case it 1s also necessary to move the view of the geometry It can be done by holding SHIFT right mouse button GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help z er This edge will be copied by 0 115 m along the x axis in the negative direction 38 conditions read a 0 7603 17 materials read 7 si y 5588 me Command Figure 16 The geometry after Zoom in ATENA GiD 16 The Copy menu appears after selecting Utilities Copy in the Main menu The new line should be in the 0 115 m distance from the right edge of the beam The copied entity is line and there is no extrusion necessary The parameter definition is depicted in the Figure 17 After the definition of all parameters the Select button should be pressed Then the line required for the copying can be selected in the graphical area see Figure 18 After the selection of the line it is necessary to press Finish button to complete the translation see Figure 19 x Parameter input Entities type nes 7 Entities type Lines ee m Transformation Translation a First point x 0 0 T y 0 0 Z 0 0 0 115 Er Second point x 0 115 E y 0 0 Duplicate entities Z 0 0 Do extrude No bl Do extrude No Iw Maintain layers Multiple copies 1 Select Cancel Figure 17 The definition of translation of the
110. ter top beam is depicted in the Figure 143 Conditions Fixed Contact for Surface t 2 Type of Cond Slave ContactName Top x The contact condition is applied on the surface therefore this icon should be selected By the cl cking on the arrow the several options of conditions will offer The option Fixed Contact for Surface has to be selected For the plate the Slave should be selected The Contact Name has to be same like the name of the master condition of the beam Otherwise the beam and plate would not be connected The Top contact name should be written By this button this condition can be assigned to the geometry see Figure 144 Figure 143 The slave top plate contact condition Parameter input Fixed Contact for Surface Type of Cond SLAVE Contact Name Top ATENA GiD 98 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam 31 7 2009 Files View Geometry Utilities Data Mesh Calculate ATENA Help i EI bil Version 9 Finish 2 The button Finish has to be selected to complete contact condition definition Enter Surfaces with new values Added 1 new surfaces to the selection Enter more surfaces ESC to leave Command Figure 144 The selection of the surface for the slave top plate contact condition 99 Tutorial 4 1 3 Master bottom beam and Slave bottom plate conditions The bottom conditions will be done by the same procedure like in the case of top contact co
111. tes After the creation of the beam geometry loading and supporting plates should be created The top plate loading plate will be created first The bottom plate supporting plate will be created by copying of the top plate The top plate will be created with using the commands Copy and Create lines These commands should be known from the previous chapter The dimensions and location of the plates can be seen on Figure 15 0 165 0 100 ae x c2 e ce e LC x j 7 0 050 0250 0 100 0 925 1 275 Figure 15 The dimensions of the half beam and location of steel plates 15 Tutorial 3 2 2 1 Top plate It s useful and easier to use existing elements for the creation of a new object The top plate is located on the right corner of the created beam Therefore the upper right edge of the beam can be copied and moved to 0 115 m from the right end Then this line will be copied and moved again The second copy operation should move the line by a distance identical to the width of the steel plates These two lines will be then connected into a rectangle The surface will be added to this rectangle and then this surface will be extruded into a volume of the steel plate Before starting copying it is better to zoom in the right beam corner see Figure 16 The Zoom in is activated by command View Zoom In orby clicking on the icond The command Zoom in and out can be also activa
112. tion of certain quantities during the analysis For instance they can be used to follow the development of deflection or forces at given locations The monitoring points are defined as special conditions that should be specified in the first interval 3 1 1 Introduction of the graphical user interface Before starting the definition of the geometrical model it is good to introduce the graphical user interface of ATENA GiD The main window is shown in the Figure 2 It shows the basic layout of GiD program right after its start and it explains the basic functionality of the various icons and menus This window shows the basic layout of the GiD program At this stage it contains only commands for the creation of geometric objects In order to activate ATENA specific materials and boundary conditions an appropriate problem type needs to be selected This is described in the next section 3 Tutorial Project UNNAMED Files View a Utilities Data Mesh Calculate Help Ser pp Stan Z 4 ppa The command of icons View Toolbar can be used for zooming and can be found n the rotating of a created model Main Menu and vice versa Create lines Toolbar can be used for The icon name will definition of straight and curved lines appear after leaving the mouse on the icon o a e 5 95 3 he A Re TE Surface and Volumes Toolbar can be used for definition of surfaces volumes and predefined volumes gt a Message window through wh
113. to be applied on a line therefore this icon should be selected By clicking on the arrow the list of available line conditions will appear The option Constraint for Line should be selected Coordinate System GLOBAL Constraint iw Constraint m cines By clicking on this button the several options will appear The option GLOBAL coordinate system has to be selected The support is in the vertical direction Therefore the Z Constraint has to be selected In order to prevent any rigid displacement the Y Constrain should be selected too Assign Entities Draw Unassign By this button the monitor can be assigned to the geometry see Figure 87 Close Figure 86 The support condition definition Parameter input Constraint for Line Coordinate System GLOBAL Y Constraint Z Constraint ms By clicking on the icon P the created condition can be drawn After clicking on that icon the support condition will be displayed on the assigned lines see Figure 88 ATENA GiD 60 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam monitors Files view Geometry Utilities Data Mesh Calculate ATENA Help ver pr Shs bil Versions x Conditions C Name I O FjU Tr B LER beam 9 n m a bars E at LEN ER l The selection of the line Wf for the support condition alphabetic gt eS N N q N Send To v Close 2 The button Finish has VAN to be selected to complete support condition
114. ton Off LayerO is displayed by selecting this layer and then by pressing the button On Afterwards the beam geometry will disappear and the reinforcement and steel plates will appear in the graphical area see Figure 41 gt GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry ed om 02 ay e Qo Layer Layer To use v Layer On Off Color n n E E Sel New Delete Rename alphabetic To back v Send To v Close e Layer Layer is OFF Layer LayerO is ON Command Figure 41 The Layer is activated and reinforcement and steel plates will appear in the graphical area The reinforcement layer s created by writing the name bars into the window and pressing the button New Then the reinforcement layer will appear in the list of layers The newly created bars layer 1s automatically activated The activation is indicated by the checkbox symbol E The reinforcement geometry is assigned into the bars layer by pressing of the button Send to Then the pull down menu will open see Figure 42 The reinforcement geometry contains two types of entities and all of them should be moved into the bars layer Therefore the item Also lower entities has to be activated and the command Lines should be chosen After selecting the Lines in the pull down menu the geometry which should be send to the bars layer can be selected see Figure 43 Finish button completes the layer assignment 33 Tutorial Pr
115. tory in GiD consists of intervals Each interval is divided into load steps Because n this case the structure is loaded by only one type of force defined displacement only one interval will be used Then this interval will be subdivided in several steps The objective is to gradually increase the load up to failure Very often before an analysis is started it is difficult to estimate the required loading level that would lead to failure The maximal load level however can be often estimated either by simple hand calculation or by performing an initial analysis with a very small load level Then from the resulting stresses it 1s possible to estimate how much the load must be increased to fail the structure In this example t is known from the experimental results that the beam should fail at the deflection of about 0 003 m In previous section the prescribed displacement of 0 0001 m was applied at the top plate This means that the predefined displacement should be multiplied approximately 30 times to reach the failure Base on this assumption the Load interval will be multiplied by 40 Naturally such a load should not be applied to the structure in one moment Therefore it is necessary to subdivide the interval in several load steps In this case the interval will be divided in 50 load steps The loading history can be prescribed by selecting item Data Interval Data in the main menu see Figure 115 After selection of this command the Int
116. utorial GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry Files View Geometry Utilities Data Mesh Calculate ATENA Help 8 BISCRIBAlY amp Ve Layer To use w bars On Off Color n nr 3 Sel New Delete Rename alphabetic To back v Send To v Close GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam geometry View Geometry Utilities Data Mesh Calculate ATENA Help SSR DR Sur a Layer Touse v plates On Off Color 4 n nr 3 Sel New Delete Rename alphabetic To back v Send To v Close v Layer plates is ON Layer bars is OFF Command Figure 50 The displayed plate layer contains plate volumes ATENA GiD 38 3 3 Material parameters This tutorial example contains three entities which are made from three different materials These three entities are concrete beam steel plates and reinforcement bars In this chapter the characteristics of materials will be defined and then the material will be assigned to an appropriate geometrical entity 3 3 1 Concrete beam Before definition of the concrete beam material it is good to display only the beam layer The material definition of the beam starts by selecting the icon un or with the command Data Materials SOLID Concrete in main menu see Figure 5 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam layers Files View Geometry Utilities PASA Mesh Calcu
117. utton to complete the translation see Figure 32 Entities type Volumes E Pa ram ete r i n p ut Transformation Translation Entities type Vol umes First paint Num T Transformation Translation First point x 0 0 z 0 0 Second point y 0 0 Mun x 81 w 0 0 Z 0 0 T MES Second point x 0 81 Duplicate entities 0 0 Do extrude Mo z 0 35 Do extrude No Iw Maintain layers Multiple copies 1 Select Cancel Figure 30 The parameter definition 25 Tutorial GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED Files View Geometry Utilities Data Mesh Calculate ATENA Help The red colored selected volume The button Finish has to be selected to complete translation b ma Enter Yolumes to Copy Added 1 new volumes to the selection Enter more volumes ESC to leave bil version s First point m Second point gt 2 JU Command GiD AtenaV4 Static 2D and 3D Interface Project UNNAMED The bottom plate volume Dil version s Entities type Volumes M Transformation Translation x First point Num x 0 0 y 0 0 e z 00 Second point Num x 1 0 81 y 0 0 e z 035 7 Duplicate entities Do extrude In o Y Create contacts V Maintain layers Multiple copies 1 Select Cancel Pick LEFTMOUSE to desplace view ESC to quit if present mouse wheel zooms Pick L
118. w volumes to the selection Enter more volumes ESC to leave Command Enter value window Enter number of cells to assign to lines Assign Figure 124 The number of cells for length of the beam Parameter input Enter number of cells to assign to lines When the number of cells is defined the button Assign has to be pressed to select lines which should be structured The 16 cells will be assigned to the beam length When one of the longitudinal edges of the beam volume is selected the program automatically detects which lines should have the same number of cells to guarantee the generation of a structured mesh see Figure 125 ATENA GiD 86 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam intervals Files View Geometry Utilities Data Mesh Calculate ATENA Help 18219 x Select lines to define structured mesh Added 1 new lines to the selection Enter more lines ESC to leave Command Figure 125 The selection of the length lines After the selection the ESC key should be pressed to return to the definition of number of cells Then the 5 cells should be defined and assigned to the height of the beam see Figure 126 Then the selection can be done by selecting the button Assign and one of the vertical beam edges shall be selected see Figure 127 Enter value window Enter another number of cells to assign to lines Figure 126 The number of cells for height of the beam Paramet
119. was successfully captured Further improvement of the results can be achieved by decreasing the finite element size to for instance 8 elements over the beam height 4 elements over the beam width and 25 elements over the beam length The objective of this tutorial 1s to provide the user with basic understanding of the program behaviour and usage For more information the user should consult the user s manual 2 or contact the program distributor or developer Our team is ready to answer your questions and help you to resolve your problems The theoretical derivations and formulations that are used in the program are described in the theory manual 1 The experienced users can also find useful information in the manual for the analysis module only 4 ATENA GiD 124 7 PROGRAM DISTRIBUTORS AND DEVELOPERS Program developer Cervenka Consulting Ltd Na Hrebenkach 55 150 00 Prague 5 Czech Republic phone 420 220 610 018 fax 420 220 612 227 www cervenka cz email cervenka cervenka cz Program distributors AUSTRALIA Palmer Technologies Pty Ltd PO Box 1513 Coorparoo DC Q 4151 Greg Palmer BE PhD phone 61 7 3847 4048 fax 61 7 3394 4934 e mail trish palmer palmertechgroup com au www palmertechgroup com FINLAND A amp S Virtual Systems Oy Laivalahdenkatu 2b 00880 Helsinky Finland Juha Airola phone 358 207 412 210 fax 358 9 727 6110 e mail juha airola virtualsystems fi www virtualsystems fi GERMAN
120. window Enter size of elements to be generated Cancel Dialog window g I Mesh Generated Press OK to see it Num of linear elementsz32 Mum af Tetrahedra elementsz31 Mum of Hexahedra elements 160 Num of nadesz335 DER ST EN AN A ANN AJ V NNI NN EATI AT DEY AA IN TIN IN A NS V TE PN PN ERS ALAL Lg EN NJ Li IN IN VAN PN TN J SSS VAY A WEN Y KO AN PN Pia eae A 7 x gt NJ AES Ps NN N Y N IR N m N oJ N AR N N LX TASSA NAAR Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms Comman d Figure 133 The generated structured mesh ATENA GiD 90 For better view of the structured mesh the created model can be rendered It is done by selecting Render n the Mouse menu which appears after clicking on the right mouse button see Figure 134 GiD AtenaV4 Static 2D and 3D Interface Project 3DBeam di i EIER Files View Geometry Utilities Data Mesh Calculate ATENA Help Dil Versions Contextual Zoom Rotate Pan 2 Redraw Normal Label Smooth Layer Change light dir Customize eG Quit Reflection Define reflection Pick LEFTMOUSE to rotate ESC to quit if present mouse wheel zooms mode has changed ne Command Figure 134 The flat rendered geometrical model
121. xtruded in Copy x Entities type Surfaces a this case Surfaces should be selected IUE an Translation Selection of copy method n this case ex Translation should be selected First paint 10 0 10 0 e z t Manual inserting of vector coordinates for a direction along which the entities should be extruded in this case the rectangular surface should be extruded in Z axis direction over the beam thickness 0 32 m Second point 0 0 10 0 0 32 Selection of entity types which should result from the extrusion operation In th s case the surface will be extruded into a volume so the item Volumes should be selected Duplicate entities Do extrude Yolurmes Definition of a numbers of copied entities in this case it is only 1 copy Create contacts Iw Maintain layers By pressing Select button the entities which should be extruded can be selected in the graphical area Multiple copies 1 Select Cancel Figure 12 The description of Copy menu 13 Tutorial Parameter input Entities type Surfaces Transformation Translation First point x 0 0 y 0 0 Z 0 0 Second point x 0 0 y 0 0 Z 0 32 Do extrude Volumes The selection of the surface can be done by a direct clicking on the pink line which defines a surface Another option is to select the surface by holding the right mouse button and by moving of the mouse The box should cross at least one line of the surface to be se

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