FEWeld
Contents
1. LZ ae RE 111 DILLO 2727277 LL Hm 77 Em TASAS EX NEC b Cosmos Ansys Femap A Weld Definition Data Set_Name Pipe Lug 0 Defined Weld No 01 14 4 3 Weald Weld Between Base Plate and Post Pipe Description Weald ype Direct_Shear Orientation Ot Coo Parameter P face ange deg 45 a Po min led size Allowables Set 5356 Coord Sys Test Weld Weld Nodes Selection Method By Curves C By Set Group Component Curve List Curve ID Terminated Part Element Selection Method By Geometry Surface Area Region etc C By Set Group Component Shell Element Geomety Select SJ O List Figure 4 7 Weld Definition Figure 4 8 Ansys and Cosmos Plots Colored to Show Element Orientation me e m m m identified by color If you are looking at this in black and white the Cosmos plot 1s difficult to distinguish the positive faces are colored red and the negative faces are colored blue When you are curious about a formulation double click on the weld type field in the main window or in the Weld Definition Data window or alternatively issue the Definition gt gt Library Formulations menu command and select the formulation from the list on the left FEWeld Chapter 4 Example Problems 4 6 amp Weld_Types Al ES WE2. 0 30 60 90 120 150 180 210 240 270 300 330 360 Position Along y axis Figure 4 28 Load Plots From FEWeld for Weld 01 Load Case 04 25 and 50 thick vertical post with 1 0 inch Base 25 vertical post with 0 50 inch Base 4 2 Example Conclusion This example exercised many of the features of using FEWeld for analysis of welds Even so the analysis 1s fast the more so once you learn to move around the program The weld loads for the problem presented are readily calculated with classical analysis Performing classical analysis on this weldment would take some time however Several of the welds may have to be calculated at more than one load condition to determine the worst case Often with complex weldments calculating the load distribution along the weld joint using classical analysis 1s difficult Future Enhancements e FEWeld will have facilities for general load case interactions that are intended to be able to handle user specifications from simple Goodman diagrams to nonlinear interaction formulae to cycle counting methods This facility will be general just like the weld formulation language 1s general e Simple Load Path Accounting for applying effective notch stress concentration factors multiple load path joints such as to cruciform T and Lap Joints Other The FEWeld user manual covers the material introduced here in much greater depth Itis 180 pages in length CHAPTER 1 CHAPTER 2 2 1 2 2 C
3. J 98 19 m3 las lb we e Sin 23 2 As 2 206 2 Y _ lb S ix b ee MS ose252 84 b D eccr ow Sreess _ Sm Cos 23 19 P j f _ ZSO W o IGS E cos 25 2 168 by Toral of Weep Sreess PER vant 2 ay um I ZA a 2 keo Size lt s 558 9 RERLIRED THARODAT OC 966 Phu 7200 psc E L O i 3 8 im THRORT de E Site e 5 VZ bwu gt 0 195 4 lt _ _ oodd The fillet size calculated in FEWeld was 215 inch a difference of 10 Figure 4 28 shows the weld loads calculated from the FEWeld analysis Note however if the base plate 15 changed to 0 50 inch FEWeld predicts a maximum weld size of 265 inch This 1s a real effect due to the additional softness of the base plate toward the center that is not accounted for with classical analysis FEWeld Chapter 4 Example Problems Pipe Lug 01 Weld 01 LC 04 Pipe Lug 02 Weld 01 LC 04 E Tj Tw Tj 9 1000 1000 800 800 600 600 400 400 200 200 0 0 200 200 400 400 600 600 800 800 1000 1000 0 30 60 90 120 150 180 210 240 270 300 330 360 Position Along y axis 0 30 60 90 120 150 180 210 240 270 300 330 360 Position Along y axis 4 17 Pipe Lug 03 Weld 01 LC 04 h Ts N Tj Tw h Ts 1200 800 400 0 400 800 1200
4. 003 3 493e 002 1 105e 002 1 186e 003 For this Joint the Z AXIS 356 6 072e 009 3 181e 001 4 527e 002 1 948e 002 2 821e 002 1 470e 003 2 1 1 corresponds to the negative of C RESULTS OF WELD THROAT REQUIREMENT the joint normal in the weld cancuLarions tb 0750 xls joint coordinates Therefore ruc mar 18 14 11 28 1997 i 0 0 1 only the z stress components note guo C 2 10 927 based on the load transferred elded Both Sides Fillet Allowable Stress 13200 through the weld Min Weld Throat t 0 224 at node 340 100 EDO Fe 4 00 Min Fillet Size S 0 317 at node 340 eld Position From Top Weld Load Output The equations used in classical 1 1 El Nd Normal load Bending Load Shear load Min Throat analysis to determine part top eor pem mM a and bottom stress due to 340 5145 75 136 828 716 354 0 224 348 3763 5 150 797 604 235 0 175 bending normal and shear loads 356 2880 51 169 421 628 098 0 145 are easily reversed to determine bending normal and shear loads Figure 3 5 T Bracket FEA Stresses and Loads at Joint On ge a get lk ee t from the stresses This 15 presented for node 340 ini Figure 3 6 t i Part C of Figure 3 5 presents the result of this calculation for every node in the weld joint Resolution of Weld Loads Node 340 3 9 Weld Section Properties 3 E foe mir The weld load calculations
5. 276 fillet weld tw Weld Throat a from Direct Loads Only 5000 10122 Max Signed 195 Figure 4 21 Results by Weld and Results By Load Case Reports summary of the analysis It presents only the worst case single value of each summarized variable for each weld along with the node load case and criteria allowable stress FEWeld Chapter 4 Example Problems 4 12 The report on the right 1s the Results By Load Case report This report shows for each load case the worst case single value of each summarized variable along with the node and criteria Detail Charts The detail chart will plot stored variables from the weld formulation along the weld joint Print Export amp Detail Results Control Panel _ Load Case Ei Set FE Weld X Pipe_Lua_01 01 ES Detail Results Aa ESFE_weld_Chart_Tools July 01 2000 4 SB amp Ba copy chart Detail Weld Results G Work 91 82 I idodeis Pipe_Lug_Prachce Pipe_Lug wid Pipe_Lug_01 0 25 Thick Wall Post 1 0 Thick Base Quadratic Displacement Form Weld 01 Weld Between Base Plate and PostPipe a For each node Max Signed tw Weld Throat a for all load cases Weld Type Direct Shear Basic Weld Throat Determined By Shear from Direct Loads Local Bending Ignored 1 ES Select Result Sets for Revi _AOAA gt Weld Sets Welds Load Cases Pipe_Lug_01 Weld 01 LC byNode Set Name Weld No Show __ Load Case No
6. AA 2810 IbX 6 in Bending Load About y foy 16860 in Ib f M by S wy Bending Load uses y _ 876 0 16 M 146 b 6 in 1 88 92 876 in lb 466 lb in Figure 3 4 Classical Calculation Figure 3 3 Weld Load Diagram 7 0 FEWeld Chapter 3 Theoretical Overview Excerpts from the Manual 3 4 3 4 Method of Using Loads Calculated from FEA Shell Elements for Analysis of Fillet and Partial Joint Penetration Groove Welds Node 340 of the finite element WELD JOINT STRESS TENSOR LISTS LOAD AND SIZE CALCULATIONS model depicted mr Figure 3 1 A STRESSES ON THE TOPS OF THE SHELL ELEMENTS OF PART 1 AT THE WELD JOINT d E _ f h Selection List 1 Load case 51 Top Face Layer 1 Cs 3 corresponds to the top of the Node SIG X SIG Y STO TAU XY TAU XZ TAU YZ e 340 3 753e 010 4 468 003 1 956e 004 3 848e 002 3 902e 002 2 530e 003 weld joint FEWeld load 348 1 321e 009 3 808 003 1 647e4004 3 493e 002 1 105e 002 2 029e 003 calculation will be presented at 356 6 072e 009 3 715e 003 1 491e 004 1 948e 002 2 821 002 1 832e 003 this node and compared to the B STRESSES ON THE BOTTOMS OF THE SHELL ELEMENTS OF PART 1 AT THE WELD JOINT classical analysis Refer to Selection List 1 Load case 51 Bottom Face Layer 1 Cs ee a aoa Node SIG X SiG Y SIG Z TAU XY TAU XZ TAU YZ Figure 3 6 340 3 753e 010 2 531 003 7 884 003 3 848 002 3 902e 002 1 210e 003 348 1 321e 009 1 132 003 3 602e
7. By C C By Set Group Component Set Yoke_01 T Not Defined oT aliri Weld weld Between Front Stiffener and Base Plate Description WeldType 5 I Orientation O6 OO Allowables Set Class2 Coord Sys z Weld Nodes Selection Method C By End Points C By Set Group Component By Curves By Command Script File Curve List Curve ID Terminated Part Element Selection Method 5 By Geometry Surface rea Region etc 11 C By Set Group Component Shell Element Entity Type 10 Geometry Select SF List Curve List ist 10 pe Corner Key Points adary_C 113 112 15 16 29 11 112 111 14 15 85 29 8 298 111 114 17 14 88 298 58 299 114 113 16 17 87 299 13 296 By Geometry Surface Area Region etc By Set Group Component Terminated Part Element Selection Method By Command Script File GeoStar Console SFLIST 1 2281 Shell Element sti Pick Input surface id gt 217 Geometry Select List P R RG querying the FEA model for Point Curve Surface Area etc ID s entity Command Line Mem pescription Points KLIST List gt Picked Entities gt Keypoints Pick Points and List KSEL S P Select gt Entities gt Keypoints Select Points and List KLIST ALL List gt Keypoints LLIST List gt Picked Entities gt Lin
8. Criteria Value Weld 01 Weld Between Base Plate and Post Pipe a DIRECT_SHEAR Basic Weld Throat Determined By Shear from Direct Loads Sa_Set No 5356 Local Bending Ignored face_angle_deg 45 min_leg_size 0 Load Case 01 Lug Load 0 Degrees Vertical Down S1 Fillet Leg Size on Terminated Part 7000 5633 04 Max Signed 215 if fillet weld tw Weld Throat a from Direct Loads 7000 5633 04 Max Signed 152 Only Weld 02 Weld Between Post Pipe and Post Pipe End Cap DIRECT_SHEAR Basic Weld Throat Determined By Shear from Direct Loads Sa_Set No 4043 Local Bending Ignored face_angle_deg 45 min_leg_size 0 51 Fillet Leg Size on Terminated Part if 5000 7149 MaxSigned 066 fillet weld iw Weld Throat a from Direct Loads Only 5000 7149 MaxSigned 046 Load Case 02 Lug Load 15 Degrees S1 Fillet Leg Size on Terminated Part if 5000 7149 MaxSigned 064 fillet weld iw Weld Throat a from Direct Loads Only 5000 7149 Signed 045 Load Case 03 Lug Load 30 Degrees S1 Fillet Leg Size on Terminated Part if 5000 7149 MaxSigned 06 fillet weld iw Weld Throat a from Direct Loads Only 5000 7149 Signed 042 Load Case 04 Lug Load 45 Degrees S1 Fillet Leg Size on Terminated Part if 5000 7149 Max Signed 053 fillet weld iw Weld Throat a from Direct Loads Only 5000 7149 Signed 038 Load Case 05 Lug Load 60 Degrees S1 Fillet Leg Size on Termi
9. Degrees Lug Load 75 Degrees Lug Load 90 Degrees Lug Load 30 Degrees Lug Load 45 Degrees Lug Load 50 Degrees Lug Load 75 Degrees Lug Load 90 Degrees Part A Before Stress Allowable Definition Part B After Stress Allowable Definition Figure 4 6 Defining Stress Allowable Sets Defining Multiple Stress Allowables for the Same Load Case Because this weldment will be fabricated with both 4043 and 5356 electrodes different welds will have different allowable throat stresses for the same load cases In order to accommodate this Stress Allowable Sets must be defined Definition gt gt New Allowables Set menu command The appearance of the main window will change to show the area for stress allowable sets as shown in Figure 4 6 Part B Items 2 and 3 Note that when the Stress Allowables Grid is Opened there 1s a stress allowable set called 01 already there Rename that to 4043 and observe what happens in the allowables set part of the weld grid Item 3 and in the Allowable Stresses part of the Load Case Grid Item 4 Next add a 5356 Allowables Set in the Stress Allowable Sets Grid Item 2 Change the allowables set for weld 01 in the weld grid to 5356 Item 3 and add the allowable stress values 7000 psi in the 5356 column of the Load Cases grid Item 4 FEWeld Chapter 4 Example Problems 4 5 Step 5 Provide Weld Detail Data for Each Weld Terminated Part Element Selection and Weld Joint Node Selection And Weld
10. Parameters Open the weld definition window by clicking the weld definition button al in the weld set main window Figure 4 5 Item 4 by selecting the Definition Weld Detail menu command or by double clicking on a weld number or description in the weld list Items 2 and 3 Double clicking the weld type brings up the formulation editor for that weld type Figure 4 7 Shows the weld definition data window If it is not set to Weld No 01 either press the M Le omm button or click anywhere on the Weld 01 row in the Welds grid of the Weld Set main window Notice that this weld is not defined A weld becomes defined when there is sufficient information provided to put out a valid FEA command file for that weld into the appropriate FEA system For Weld 01 the Weld Node Selection Curve List and the Shell Element Geometry List are highlighted in red This information is needed to complete the definition for weld 01 Note rather than defining the welds in the main window as we did they can also be defined in this form We will go through the items below the weld type one by one Orientation Many weld types require the element orientation with respect to where the weld will be laid some balanced formulations such as equal double sided fillet welds DF and the Direct Shear don t care about the orientation and the orientation is not required for those welds 2 2
11. Review and Browse the Results 10 Minutes There are 2 basic levels of results review Summary reports and detail charts Summary Reports There two summary reports available in FEWeld Results Summary by Weld and Results Summary by Load Case They are both accessed under the Results menu Results Summary by Weld for Set Pipe Lug 01 Results Summary by LC for Set Pipe Lug 01 File G Work 91 011 Models Pipe_Lug_Practice Pipe_Lug wld July 01 2000 Page 1 of 2 Set Description 0 25 Thick Wall Post 1 0 Thick Base Quadratic Displacement Formulation FEA Model Load Case Data Load Case Count 7 LC Description 01 Lug Load 0 Degrees Vertical Down 02 Lug Load 15 Degrees 03 Lug Load 30 Degrees 04 Lug Load 45 Degrees 05 Lug Load 60 Degrees 06 Lug Load 75 Degrees 07 Lug Load 90 Degrees Allowables Sets Allowables Sets Count 2 ID Description 4043 4043 Electrode 5356 5356 Electrode Load Case Allowables Crosstab Load Case 4043 5356 File G Work 91 011 Models Pipe_Lug_Practice Pipe_Lug wld July 01 2000 Page 2 of 4 Weld Data Weld Count 7 entered with 7 Calculated Allowable Stress Node Criteria Value Weld 02 Weld Between Post Pipe and Post Pipe End Cap DIRECT_SHEAR Basic Weld Throat Determined By Shear from Direct Loads Local Sa Set No 4043 Bending Ignored face_angle_deg 45 min leg size 0 Weld Data _ Weld Count 7 entered with 7 Calculated Allowable Load Stress Node Case
12. e a lap joint or an outside corner joint awe face_ang Terminated Part This weld is unbalanced with respect to the part centerline Therefore the structural restraint against rotation plays a role in the calculated stresses Joints can be classified as Restrained restraint 1 Unrestrained restraint 0 Intermediate Restraint 0 lt restraint lt 1 Restrained Joints include lap joints or tubular connections where TUE local centerline of the terminated part is restrained against rotati structurally not by the weld are restrained For fully restrained oin the offset of the inplane transverse load Tj from the terminated part Record 14 4 10 gt gt of 24 Record 14 1 1 gt Lou rl of 2 Figure 4 9 The Weld Formulation Editor and Diagram Windows showing the F1_1 Formulation Weld Parameters The next item in the weld definition data form is the undefined weld parameters The default values for the Direct Shear and DF formulations are a 45 degree fillet and no minimum size 0 Coordinate System Optional The coordinate system is an optional parameter It is used for weld Joint nodal position listings only If none 15 specified then the global Cartesian system 15 used 0 For the pipe lug problem Welds 01 and 02 should use Csys 1 the global cylindrical system Welds 03 and 04 should use Csys 3 a cylindrical system defined in alignment with the stand Off
13. exercise can be performed in the Demo mode of FEWeld Part 3 4 0 Dia x 0 25 Wall Tube 500 Lb Load in Two Parts Constant Side Load of 250 Lb Rotating Load of 433 Lb Vertical Down to Horizontal Modeled in 15 Degree Increments Part 2 Part 1 5 0 Dia x 0 25 Wall Tube 1 0 Thk x 10 x 10 Plate ll Weld 03 Weld 02 Weld 05a b Weld 06 mi Weld 04 Weld 01 The lug experiences a load of varying direction from vertical down to horizontal with a constant value of 433 pounds with an additional constant side load of 250 pounds for a total constant load magnitude of 500 pounds The weldment is made of aluminum with the tubing and lug details made from 6061 and welded with 4043 electrode The base plate 1s made of 5083 and the weld of the vertical tube to the base plate 1s with 5356 electrode The throat shear stress design allowables against static failure for the electrodes are 5000 psi for the 4043 electrode and 7000 psi for the 5356 electrode Welds 01 through 04 are welds of compact sections and will use the Direct Shear formulation in FEWeld which ignores the local bending about the weld axis caused by the elastic rotation associated with the out of plane loading Refer to Section 3 7 Welds 05 and 06 Will use the DF formulation Balanced Double Sided Fillet Weld FEWeld Chapter 4 Example Problems 4 2 Weld No Weld Type CS Descipion oe tugtoad 75 Degre
14. menu command A save file dialog comes up and the default name for the command file 15 set name feweld cmd where cmd 1s mac for Ansys and geo for Cosmos and set name 1s the name of the current weld set For example the command file name for Cosmos output for Pipe Lug 01 is Pipe Lug 01 FEWeld geo It is recommended to put the command file in the directory that contains the FEA model because that is where FEWeld looks for the FEWeld results file that 15 generated by the command file The relative path from the FEWeld file to the location where the command file 15 written 1s stored with each weld set so that FEWeld will look in the Table 4 3 Pipe Lug 01 Weld Geometric Entities correct location if the job directory is moved Write the FEA Command File now FEWeld Chapter 4 Example Problems 4 9 Step 7 Execute the Command Macro File in the FEA Environment If your FEA program 18 not apn in the Pipe Lug 01 model open it now Executing the command FEA Program Command Line Menu Command INPUT FNAME EXT DIR File Read Input From FILES File Load Table 4 4 Commands to execute FEA command macro script files Execute the Yoke 01 FEWeld xxx FEA Command file now Depending on the speed of your computer the script should take 1 to 5 minutes to run The FEA Command File created a file called Yoke_01 fewinp in the FEA problem directory This will be read into FEWeld Step 8 Read the Weld Results into FEWeld FEWeld G Wo
15. performed with classical analysis except that the direct loads are derived from the FEA load path instead of the nominal values used with classical analysis Note The AWS D1 1 allowables for throat shear in fatigue Category F are also based on these nominal values however there is a major caveat The geometries tested for the development of these allowables did not involve significant out of plane loading and therefore were not subject to much local bending about the weld joint For designs with out of plane loading and meaningful local elastic bending about the weld joint use of effective notch stress concentration factors which are well described in 1 8 recommended FEWeld is well suited to perform nominal geometric Hot Spot and effective notch stress calculations Final notes With unrestrained geometries such as the T Bracket of Figure 3 1 the bending load will remain proportional with the direct load and the Direct Shear formulation should not be used If a single sided weld 18 to be used the formulation should be one of the specific single sided formulations in the FEWeld library 1 o P1 PIFI etc t 1 Hobbacher A Editor 1996 Fatigue Design of Welded Joints and Components Recommendations of IIW Joint Working Group XII XV Woodhead Pub Ltd FEWeld Chapter 4 Example Problems 4 1 Chapter 4 Example Problems 4 1 Problem 1 Pipe Lug Estimated Time to Perform Exercise 50 Minutes This
16. pipe and welds 05 and 06 should use Csys 0 Weld Joint Definition Nodes and Elements There are several approached for specifying the weld joint nodes and terminated part elements In Ansys it may be expedient to build components or groups and put the nodes and elements in them for each weld and just specify the groups Or the curves lines for the weld joint nodes and the surfaces areas etc for the terminated part elements could be listed a priori and filled into the form The method presented here will be to fill in the form interactively querying the FEA entities and putting them into FEWeld one weld at a time Open the Pipe Lug 01 FEA model in your FEA application Switch to the FEWeld application after Size it small do not minimize it minimizing the FEWeld application window will remove the CIS definition data window FEWeld Chapter 4 Example Problems 4 7 EA GeoStar 2 5 64K Version pipe_lug_01 Main Geometry File Oi Eie Edit Geometry Meshing PropSets LoadsBC Control Display Analysis Results Windows Meshing Edit PropSets Control ANSYS ED Utility Menu Yoke 01a File Select List Plot PlotCtris WorkPlane Parameters Macro MenuCtrls Help ANSYS Input ANSYS Toolbar RUE DB Pick a menu item or enter ANSYS Command below PREP 5 ANSYS Main Menu XI ANSYS Graphics Denn Liem 4043 x Estero Y Test Weld Geom Weld Nodes Selection Method
17. the element top the same direction as the nodal sequence of the element definition e The Surface Normal us is the surface normal of the element top at the location where the weld joint coordinate system 15 being evaluated e The Weld Joint Normal uj points directly out of the element edge in the element plane and perpendicular to the weld seam It is perpendicular to both uy and uy It is defined by weld axis unit vector u surface normal unit vector u weld joint normal unit vector Uu U X U The weld joint coordinate system 1s calculated in FEWeld locally at each weld joint node based on the elemental shape function for elements in the terminated part with and edge in the weld joint The stress tensor in weld joint coordinates 15 represented as follows Se De S JJ JW SJ Si 9 S where the 12 23 31 notation 15 used jw ww ws S S S sj WS SS FEWeld Chapter 3 Theoretical Overview Excerpts from the Manual 3 3 3 3 Classical Analysis of Fillet Partial Joint Penetration Groove Welds The classical method of sizing fillet welds and partial joint penetration welds is to divide the load transmitted through the weld per unit length by the electrode shear allowable to come up with a minimum throat size The joint 1s then designed around the throat requirement Calculating the load transmitted through 1s done by various means The simplest and most common method 15 to calculate the secti
18. 0 0 00 0 50 1 00 1 50 2 00 2 50 3 00 3 50 4 00 Position Along weld seam distance s size 1s quite large Without closing the chart bie the type back to DF in the Weld Set main window or the weld detail window Weld 06 will be immediately recalculated 4 1 4 Task 4 Run the Pipe Lug FEA Model with the Vertical Post Wall Thickness Changed to 0 50 5 Minutes Either copy the Pipe Lug 01 FEA model to Pipe Lug 02 and revise property set 2 to 0 50 thickness or just revise the existing model and resolve the problem 4 1 5 Task 5 Create a new FEWeld Weld Set in the Pipe Lug file and Run the Analysis FE Weld a Sw orkX91 011 3ModelssPipe Lug PracticesPipe wld Set 314 al _ Lug_01 E m Set 0 25 Thick Wall Post Quadratic Displacement Formulation FEA Model Description Welds Welds Entered with 7 Defined 2 at 5 a p Figure 4 24 Close the a Windows In the Weld Set Main Window Click the New Weld Set Button ES FEWeld Chapter 4 Example Problems 4 14 New Set Name Pipe_Lug_02 E Description a E 0 50 Thick all Post Quadratic Displacement Formulation FEA De Cancel Figure 4 25 FEWeld G Work 91 011 Models Pipe_Lug_Practice Pipe_Lug wid Make the new set name P ipe Lug 02 P and select Pine ug 02 453171213 Pipe Lug 01 from the Copy From Set drop down de Dein p Thick Wall Post Quadratic Displacement Formulation FEA
19. 7 0 07 0 06 0 06 0 05 0 05 0 04 5 0 04 0 03 0 03 0 02 0 02 0 01 T T T T T 1 6 00 8 00 10 00 12 00 14 00 16 00 6 00 8 00 10 00 12 00 14 00 16 00 Position Along weld seam distance Position Along weld seam distance s Pipe Lug 01 Weld 03 LC byNode Pipe Lug 02 Weld 03 LC byNode HH tw Weld Throat a from Direct Loads Only 51 Fillet Leg Size on Terminated Part if fillet weld IF tw Weld Throat a from Direct Loads Only 51 Fillet Leg Size on Terminated Part if fillet weld 10 00 6 00 8 00 10 00 6 00 8 00 Position Along weld seam distance s Position Along weld seam distance s Pipe Lug 01 Weld 03 LC 01 Pipe Lug 02 Weld 03 LC 01 9 Tw 5 j 4 Ts Position Along weld distance 5 Position Along weld seam distance s Figure 4 27 Result Plots for Welds 01 through 03 4 1 6 Concluding Notes for the Pipe Lug Example Fatigue If you perform fatigue analysis then the analysis just presented is sufficient for determining the fillet sizes for adherence to the published throat shear allowables for fatigue however for evaluation against base material allowables based on the hot spot method also known as the structural stress method or geometric stress method further evaluation is necessary One of the Weld Formulations Weld Types in FEWeld 15 called Stress This formulation simply outputs the base m
20. 973 0065015 0 065015 7000 33647 20105 238762 783123 01 wj El Figure 4 22 The Detail Weld Results Tools Some items about the detail chart to briefly note Item 1 The Select Results button brings up a dialog to select Weld Sets Welds and Load Cases the the Detail Results Control Panel will Browse through Note two special entries in the load case column ByNode and ByWeld ByNode plots at each node the value for the worst case load case of the summarized variable Note the Summary Variable in item 2 ByWeld plots the results for the single load case that resulted in the worst single value of the summarized variable Note also in the Control Panel the buttons for Print and Export These are for batch printing charts and exporting results for specific charts Item 2 The chart Clicking on the chart area will open the Weldtype Plot Variables window for selecting which variables get plotted and which summary variable is used for the byNode and byWeld plots Pipe Lug 01 Weld 06 LC 07 Item 3 The scrolling buttons 1n the 51 Fillet Leg Size on Terminated Part tw Weld Throat Control Panel Browse through the i welds and load cases Item 4 Click the mouse ons x y or z and that will become the independent variable in the chart 0 05 28 00 28 50 29 00 29 50 30 00 30 50 31 00 31 50 32 00 Position Along z axis FEWeld Chapter 4 Example Problems 4 13 Note Weld No 06 The weld size 1s a
21. FEWeld Demo Guide Version 2000 2 Copyright 1999 2000 Weaver Engineering FEWeld FEWeld Version 2000 2 User Guide Copyright 1999 2000 by Weaver Engineering Company Proprietary Data Unauthorized use distribution or duplication is prohibited All Rights Reserved Use of the software described herein has been provided under a Software License Agreement Information Described in this document 1s furnished for informational only 1s subject to change without notice and should not be construed as a commitment by Weaver Engineering Company Weaver Engineering Company assumes no responsibility or liability for any errors or inaccuracies that may appear in this document FEWeld 15 a trademark of the Weaver Engineering Company Weaver Engineering 150 Nickerson Street 102 seattle WA 98109 Phone 206 352 8027 Fax 206 352 8035 email info weavereng com web http www weavereng com This manual and software product are both copyrighted and all rights are reserved by Weaver Engineering Company The software product may be used only under the provisions of the license agreement included with the FEWeld package Unless otherwise stated you may only use each purchased copy of this software on a single computer by a single user at one time Trademark Information Throughout this manual and the software you will see references to other applications and trademarks which are the property of various companies e Ansys
22. For other civilian agencies FAR 52 227 14 Rights in Data General and FAR 52 227 19 Commercial Computer Software Restricted Rights These clauses are incorporated into this agreement by reference with the same force and effect as if they were given in full text In no case however will any interpretation or modification of these clauses grant you any rights in the enclosed software or data beyond those of using it under the terms of the remainder of this agreement 5 Limited Warranty a Weaver Engineering Co warrants that the CD ROM upon which the enclosed program is recorded is free from defects in materials and workmanship when used under normal conditions and b Weaver Engineering Co warrants that the program will perform substantially as described in the User Manual 6 Disclaimer Weaver Engineering Co its agents employees and distributors shall not be liable for technical editorial or other errors or omissions which may be contained in or the negligent preparation of this material Weaver Engineering Co hereby disclaims any express or implied warranty that the enclosed software documentation or other materials are fit for any particular purpose Weaver Engineering Co its agents employees and distributors shall not be liable for compensatory punitive or other damages of any nature arising from or allegedly arising from any breach of the Limited Warranty above nor shall they be responsible for claims for lost profits or re
23. HAPTER 4 CHAPTER 5 5 1 5 2 5 3 6 1 6 2 CHAPTER 7 TA 1 2 8 8 1 8 2 8 3 8 4 FEWELD OVERVIEW WHAT Is FEWELD WHOIS TE OR aa cados BACKGROUND CURRENT STATE AND FUTURE INSTALLATION SYSTEM REQUIREMENTS GETTING STARTED CLASSICAL ANALYSIS OF FILLET AND PARTIAL JOINT PENETRATION GROOVE WELDS METHOD OF USING LOADS CALCULATED FROM FEA SHELL ELEMENTS FOR ANALYSIS OF FILLET AND PARTIAL JOINT PENETRATION GROOVE WELDS WELD SECTION PROPERTIES WELD THROAT STRESS CALCULATION WELD SIZE CALCULATION WELD FORMULATIONS THE CALCULATION PROCEDURE IN FEWELD 0 ccccscccccesssscecessssseececcseeeeeecsessececeesseeeeccssasaeeeseeenseeeeeesaueeeesenenaeees USING FEWELD PREPROCESSING BUILDING A FEWELD FILE WELD ANALYSIS WELD MODELING GUIDELINES FOR FEA BUTT CORNER AND T JOINTS INTERMITTENT WELDS SPECIAL CONSIDERATIONS FOR DEFINITION OF THE TERMINATED PART LAP JOINTS AND OTHER CONNECTIONS WITH FAYING SURFACES CONNECTIONS WITHOUT A TERMINATING EDGE SOLID ELEMENTS MULTIPLE JOINT PERFORMANCE CRITERIA CYCLICALLY LOADED STRUCTURES FATIGUE LINEAR VS QUADRATIC DISPLACEMENT FORMULATIONS 5 12 CHAPTER 6 MESH SIZE FEWELD DATA ORGANIZATION THE GENERAL MODEL SPECIAL CASE ONE STRESS ALLOWABLE SET EXAMPLE PROBLEMS PROBLEM 1 BOOM YOKE PROBLEM 2 PIPE LUG WELD FORMULATION REFERENCE WELD FORMULATION LANGUAGE REFERENCE CALCULATION METHODS AND CO
24. LD FORMULATION EDITOR Hew Compile v M Compiled Print Formulations M Orientation Required Type List Weld Type 7 2P1F1_VF F1 I Description Single Sided Fillet weld Based on Throat Shear Input Defaults for 90 degree fillet laying Inside of terminated part surfaces Lap Joint or Outside corner Fillet Formulation COMMENT BLOCK Single sided Fillet weld Criteria Notch_Trans size cad eutated to minimize weld size while keeping throat shear P1 stress at or below the electrode shear stress allowable Fa PI2FI VF amp Weld Diagrams x P1F1 VF User Inputs Weld_Type J Description Single Sided Fillet Weld Based on Throat Shear Input Defaults for 90 degree P1F1 VF CB face wang e_deg The fillet face angle default 135 deg fillet laying Inside of terminated part surfaces Lap Joint or Outside Corner 2 min leg size The minimum 2 filet weld size S restraint joint restraint facto poas 1 SF 1 0 Fully rescratned against rotation due to load offset Stress 0 0 Completely unrestrained weldLoad calculated Variables S1 Fillet Leg Size 2 on terminated part tw Weld Throat a Joint Types Lap Joints Outside Corner Joints Note This is the general single sided fillet weld formulation with a face angle default of 135 degrees corresponding to a 90 degree Joint with the weld laying on the end face of the terminated part i
25. Model E al list Revis e th e d es cripti on t on ot e th enew m at eri al Welds 7 WeldsEnteredwith 7 Defined 2 thickness and click accept Weld Weld Allowables Number Type Set Weld Joint Description o rio 2 555 Ferd Between Base Pate androstPpe_ sa The new weld set Pipe Lug 02 is created that is an Ep o ru 0 e Between Post Pipe and Post Pipe End Cap ui in E exact copy of Pipe Lug 01 except there are no E E results No revision 1s necessary since the weld and y 2 e 5 E load case definitions are remaining the same Stress Allowable Sets 2 AlowablesSets Repeat task 2 Steps 6 through 8 to write out the Set ID Description P soss 043 Electrode FEA Command file execute it and load the results Mss D back into FEWeld Allowable e The welds that are interesting with this wall Lug Load 0 Degrees Vertical Down thickness change are Welds No 01 through 03 Lug Load 15 Degrees Lug Load 30 Degrees Lug Load 45 Degrees Lug Load 60 Degrees Lug Load 75 Degrees Lug Load 90 Degrees Bo First Weld Description Weld Type for First Set 01 1 Pipe Lug 01 Pipe Lug 02 216 Weld Between Base Plate and Post Pipe a DIRECT SHEAR 215 02 Weld Between Post Pipe and Post Pipe End Cap DIRECT SHEAR 51 066 047 03 Weld Between Post Pipe and Stand Off Pipe DIRECT SHEAR 51 337 234 04 Weld between Stand Off Pipe and Lug Plug DIRECT SHEAR S1 109 109 05a Weld betw
26. NVENTIONS FOR THE LIBRARY FORMULATIONS PACKAGED WITH FEWELD APPLICATION OF WELD FORMULATIONS IN DESIGN WELD FORMULATION LIBRARY REFERENCE CHAPTER 9 9 1 9 2 FEWeld Chapter 4 Example Problems 4 18
27. Show 1 twv Weld Throat a from Direct Loads Only lt 51 Fillet Leg Size on Terminated Part if fillet veld 0 25 0 2 0 15 0 1 0 05 28 WeldT Plot Variabl 2 0 00 2 00 4 00 6 00 8 00 10 00 12 00 14 00 16 00 ___ __ Position Along weld seam distance 5 Weld Type Select Formulation Output Variables for Plotting 4 DF tw 51 Fillet Leg Size on Terminated Part if fille List Coch dn st seam le 51 52 fuv f M Tj Tw Ts Load Fillet Leg on Mated Part if 90 deal dist 5 x y E Case fw Weld Throat Stress from Direct Loads 0 00 250 000 000 0136717 0 193347 0 193347 7000 12996 7 929 788 176 975 141 638 04 Elastic Joint Bending Ignored in Calcula 0 51 2 50 11 62 0 00 0 145561 0 205854 0 205854 7000 11562 8 988 033 171 431 180 574 04 _______ __ _ c SEY 100 250 2290 000 0 152010 0 214975 0 214975 7000 116109 103608 167 449 175 379 04 148 250 3399 000 0 140602 0 198841 0 198841 7000 13410 9 958 525 163 518 15222 04 196 250 45 00 0 00 0 129398 0 182996 0182996 7000 152711 877 212 167 628 151156 04 244 250 5601 0 00 0108707 0 153735 0153735 7000 191086 728512 174 814 133 24 04 282 250 6710 0 00 0 088799 0 125581 0 125581 7000 25682 6 580 187 195 038 108 28 04 Summary Variable 341 250 7838 000 0 068311 0 096606 0 096606 7000 355542 426 362 206 453 65 1578 04 392 250 9000 000 0 053611 0 075817 0 075817 7000 39041 277163 241 95 73 9875 02 443 250 10162 000 0045
28. additive This will always be the case on one side of the joint In order to compare this result to the classical result LE weld throat a further calculation is required S The loads calculated from FEA P amp V must be ende gt gt shear divided by two since the weld is double sided and the SF VAN classical calculation is per unit length of weld and Y ATL AN not per unit length of weld joint which 1s the calculation for the FEA presented Bending Load About y foy o UE E E E E E eer N S gt MY 1 Em i CRAS AX om Figure 3 3 Reproduced Weld Load Diagram d L 3000 136 8 Classical 0375 in 2500 8 2000 363 8 lb in Total Weld Load fy 1500 un f ear 1000 fy fo 2 2 500 51462 716 42 gt Y 363 8 by 0 from E i 2959 Ib in Figure 3 7 Comparison of FEA and For evaluation of the weld size the total stress Classical Load Calculations magnitude is compared to the electrode shear allowable FEWeld Chapter 3 Theoretical Overview Excerpts from the Manual 3 6 3 7 Use of Elastic Stresses as Failure Resistance Predictors Elastic Stresses are good predictors for high and medium cycle fatigue loss of dimensional integrity and fair proxies for ductile failure For resistance against ductile failure structural plastic behavior comes into play and can change the load proporti
29. anual should be directed to Weaver Engineering Company 150 Nickerson Street Suite 102 Seattle WA 98109 U S A Install this software only if you agree to the terms of this License Agreement FEWeld iii Table of Contents 3 4 METHOD OF USING LOADS CALCULATED FROM FEA SHELL ELEMENTS FOR ANALYSIS OF FILLET AND PARTIAL JOINT IPENETRATION GROOVE WELDS a D D n n nnn 3 41 FEWeld Chapter 1 FEWeld Overview 1 1 Chapter 1 FEWeld Overview 1 1 What ls FEWeld FEWeld is a general mathematical tool for calculating weld parameters to meet performance criteria from the results of finite element analysis with shell elements It s primary use is for performing calculations on linear welds fillet welds groove welds and with special consideration seam welds Spot and plug welds are currently not supported Chapter 3 Theoretical Overview provides a full description of the mechanics behind FEWeld In short FEWeld calculates joint design parameters whose values determine the predicted performance of the weld with respect to design requirements For example the throat size of a fillet weld is a joint design parameter while throat shear stress may be the predicted performance and the throat shear allowable the performance criteria At each nod amp of each weld joint for every load case FEWeld extracts the loads transmitted by the joint as well as the full stress state at both sides of the e
30. criteria for the situation 1 2 Who is it For Successful use of FEWeld requires an understanding of weld performance characterization and experience in finite element modeling The user should have a strong background in mechanics of materials a k a strength of materials familiarity with welding and weld joint design and have full understanding of the performance requirements 1 e code against which the weldment is being designed These abilities need not rest with one person It is plausable for a fea analyst to Shell Elements Sometimes called Plate Elements They are three and four sided elements with no geometric thickness like a surface the thickness 1s supplied as a property They siimulate both in plane and out of plane loads and are good for representing structural shapes plates piping etc See Chapter 3 Nodes are located at the corners and possibly the midsides of each element in a finite element model 3 Expressions of the following form can be calculated Iterate the weld size calculate the weld stress minimize the weld area such that the calculated stress is less than or equal to the stress allowable and the weld size is greater than or equal to the minimum weld size FEWeld Chapter 1 FEWeld Overview 1 2 build and run the model while the weld joint person develops weld formulations evaluates results and makes recommendations 1 3 Background Current State and Future 1 3 1 Background FEWeld was o
31. designated as the results of the calculation for charting summary reports and export Each weld in the database has one formulation associated with it Load cases are included in the database In the simple case a stress or load allowable 15 specified for each load case For more complex situations where different parts of the structure have different allowables under the same loading multiple allowables sets can be defined each with it s own value for each load case Each weld 1s then associated with one allowables set Each FEWeld file can accommodate multiple configurations associated with multiple fea models for rapid comparison between design iterations FEWeld generates concise professional reports of the configuration definitions results summaries and detail results formats There 15 a chart browser which easily cuts through the data by load case by weld or by configuration The configuration definitions results and a copy of the formulations used for the calculations are stored in the FEWeld file This 1s important for archiving and maintenance of definition integrity FEWeld Chapter 2 Installation 2 1 Chapter 2 Installation NORMAL INSTALLATION Windows 95 amp 98 If you have FEWeld installed delete the setup directory that exists as a subdirectory of your installed FEWeld program directory before running the update file The installation will not work if you don t Un install and update did
32. een Stand Off Pipe and Lug Top DF 51 171 171 05b Weld between Stand Off Pipe and Lug Bottom DF S1 376 376 06 Weld Between Lug Plug and Lug DF S1 262 262 Table 4 5 Summary of Results ByWeld Across the Weld Sets Results gt gt Results Sum ByWeld Set Crosstab menu command Weld Sets Welds Load Cases Set_Name Show Weld No Show Load Case No Show amp Detail Results Control Panel x Pipe_Lug_02 _ Load Case 1 Weld Select Results b X i 1 ol byNode o3 Pipe Lua 0 ES Print amp Detail Results Ml x GF Arex June 08 2000 JE 31452 Detail Weld Results aa E Set Pipe Lug 01 0 25 Thick Wall Post Quadratic Displacement Formulation FEA Mod Weld _ 03 Weld Between Post Pipe and Stand Of Pipe Select All Clear All Select All Clear All Select All Clear All For each node Max Signed tw Weld Throat a for all load cases Figure 4 26 Selecting Specific Welds for Review FEWeld Chapter 4 Example Problems 4 15 Now the control panel will sequence across the weld sets first corresponding to the FEA models followed by the welds and last the load cases Pipe Lug 01 Weld 02 LC byNode Pipe Lug 02 Weld 02 LC byNode tw Weld Throat a from Direct Loads Only 51 Fillet Leg Size on Terminated Part if fillet weld EF tw Weld Throat a from Direct Loads Only 51 Fillet Leg Size on Terminated Part if fillet weld 0 0
33. elds 05a and 05b Tip After the first weld is entered in each field of subsequent records depressing ctrl ditto fills the current field with the value of the same field of the previous record FEWeld Entering the Load Cases Chapter 4 Example Problems 4 4 There are 7 Load Cases and two electrode materials with different stress allowables Since most case by columns instead of rows Enter the load case numbers into the form Load Cases 01 through 07 followed by the descriptions then the stress allowable for 4043 5000 psi Depressing the return key moves to the next load case while hitting the tab key moves to the next field of the current load case Load case numbers must be entered as they are represented in the FEA system however leading zero s are o k and advised since FEWeld sorts entries in alphabetic order FEWeld G Work 91 011 Models Pipe_Lug_Practice Pipe_Lug wld setName Dipe Lug_01 ii Set 0 25 Thick Wall Post 1 0 Thick Base Quadratic Displacement Form E El Description FEA Model BA ulation Welds 7 Welds Entered with 0 Defined el Weld Weld Allowables Number Type Set O1 DIRECTZSHEAR v 5356 _ Between Base Plate and Post Pipe a O 4 02 DIRECTZSHEAR f 4043 weld Between Post Pipe and Post Pipe OS DIRECT SHEAR 4043 _ Weld Between Post Pipe and Stand Off Pipe D4 DIRECTZSHEAR 4043 between Stand Off Pipe and Lug Plug O o
34. es Fio 0 Wed between Stant Of Pipe and Lug Top 05 Fio 0 Wed between Stand Of Pipe and Lug Bonom 06 fo 0 WedBetweentugPlugandtug Figure 4 2 Welds and Load Cases in the Pipe Lug 01 Model Exercise Objectives 1 Predict the fillet weld size requirements for the Pipe Lug structure from the solved FEA model 2 Determine the effect on the weld sizes of changing the wall thickness of the Part 2 vertical tube from 0 25 inch to 0 50 inch Exercise Task Summary 1 Solve the Pipe Lug 01 FEA Model that is provided on the CD or Download 5 Minutes 2 Create a new FEWeld file Pipe Lug wld and Build the FEWeld Weld Set for the Pipe Lug 01 FEA Configuration and run the FEWeld Analysis 20 Minutes 3 Review and Browse the Results 10 Minutes 4 Create a new FEA Model called Pipe Lug 02 by copying the Pipe Lug 01 model or Reuse the Pipe Lug 01 model change the thickness of the vertical post to 0 50 and solve 5 Minutes 5 Create new Weld Set Pipe Lug 02 in the Pipe Lug FEWeld file by copying the Pipe Lug 01 Weld Set and run the FEWeld Analysis 1 Minute 6 Review and Browse the Results 10 Minutes 4 1 1 Task 1 Solve the Pipe Lug 01 FEA Model that is provided on the CD or Download 5 Minutes The distribution CD or Download that contains the FEWeld Program also contains the Pipe Lug Example problem in the FEWeld Samples Pipe_ lug directory This directory contains subdirecto
35. es Pick Lines and List LSEL S P Select gt Entities gt Lines Select Lines and List LLIST ALL LISt gt Lines ALIST P List gt Picked Entities Areas Pick Areas and List ASEL S P Select Entities Areas Select Areas and List ALIST ALL List gt Areas Table 4 1 Ansys Useful Query Commands entity Command Line Mem Bescription Points PTID Geometry Points Editing Identy Query Point INITSEL PT Control gt Select gt Initialize gt Points Select Points and List SELPIC PT Control gt Select gt By Picking PTLIST Geometry gt Points gt Editing gt List Curves CRID Geometry gt Curves gt Editing gt Identy Query Curve INITSEL Contro l gt Select gt Initialize gt Curves Select Curves and List SELPIC CR Control gt Select gt By Picking CRLIST Geometry gt Curves gt Ed1t1ng gt L1st Suraces SFID Geometry gt Surfaces gt Editing gt Identy Query Surface INITSEL SF Control gt Select gt Initialize gt Surfaces Select Surfaces and List SELPIC SF Control gt Select gt By Picking SFLIST Geometry gt Surfaces gt Editing gt List Regions RGID Geometry gt Regions gt Ed1ting gt Identy Query Region INITSEL RG Control gt Select gt Initialize gt Regions Select Regions and List SELPIC RG Control gt Select gt By Picking RGLIST Geometry gt Regions gt Editing gt List Table 4 2 Cosmos Useful Query Commands ___ The set of entities for the weld definitions is listed in Tab
36. esults gt gt Detail Results menu command 3 Select Results of 63 Print Export 6 0 10 00 Position Along weld seam distance s seam List Coordinate Systemi tw 1 52 tw f M Tj Tw Ts Load dist x y z Case 0 00 2 50 0 00 0 00 0 136717 0 193347 0 193347 7000 12996 7 929 788 176 975 141 638 04 0 51 250 1152 0 00 0 145561 0 205854 0 205854 7000 11562 8 988 033 171 431 180 574 04 1 00 250 22 90 0 00 0 152010 0 214975 0 214975 7000 11610 9 1036 08 167 449 175 379 04 1 48 250 33 99 0 00 0 140602 0 198841 0 198841 7000 13410 9 958 525 163 518 152 22 04 1 96 250 45 00 0 00 0 129398 0 182996 0 182996 7000 15271 41 877 212 167 628 151156 04 2 44 250 56 01 0 00 0 108707 0 153735 0 153735 7000 19108 6 728 512 174 814 13324 04 2 92 250 67 10 0 00 0 088799 0 125581 0 125581 7000 25682 6 580 187 195 038 108 28 04 3 41 250 7838 0 00 0 068311 0 096605 0 096505 7000 35554 2 426 362 206 453 65 1578 04 3 92 250 90 00 0 00 0 053611 0 075817 0 075817 7000 39041 277163 241 95 73 9875 02 4 43 250 101 62 0 00 0 045973 0 065015 0 065015 7000 33647 201 05 238 762 78 3123 01 Now scroll through the welds looking at the length and Figure 4 19 shows the plot for Weld No 01 except that curve number 81 was used in the definition instead of curve 82 This weld definition would need correction FEWeld Chapter 4 Example Problems 4 11 4 1 3 Task 3
37. etal stress tensor on each side of the terminated part in weld joint coordinates The transverse stresses can be compared against category E or X2 AWS D1 1 or other base metal fatigue allowables There is also the notch trans formulation to apply effective toe and root notch stress concentration factors for membrane and bending loads to output the worst case effective notch stress due to transverse loads you supply the effective notch stress concentration factors as weld parameters For fatigue additional welds would need to be defined for the Pipe Lug example to look at the base metal stress at all material load paths passing through or past the weld joint FEWeld Chapter 4 Example Problems 4 16 4 1 7 Classical Calculation for Weld 01 Load Case 04 LOAD CASE 4 500 Lt 61 LOAD CASE A gt LOADS E Goo w ces 30 45 gt 304 2 Ma Fy 500 My cos Xo susc 2 306 2 MU soo 30 2 7250 ib Fu 78 715 1180 Fe ZG 6500 Fe 29 755 Fyr Zo m 16 WO m th SECT IS Proreeres 2 WD A We S a 15 7 Ub 4 4 w D say 4 47 Pee CTaOoa s J 18 11 STRESS tae THE Y DuG amp ECT OA COMBINED Mk Moment Ma Ugo sey 16560 18250 ma Parr A aran 1429 23 2 I6 TGO 200 2 IS Tia 18230 w 15 173 6 5 mu YO My 3 z eso wok 2 2 5
38. is aregistered trademark of ANSYS Inc e Cosmos and Cosmos m are registered trademarks of Structural Research and Analysis Corporation e Windows Windows 95 Windows 98 and Windows NT are registered trademarks of Microsoft Corporation FEWeld li License Agreement This package contains your FEWeld program Please read this agreement before installing the software If you do not agree with the terms of the agreement return this package as is and Weaver Engineering Co will upon receipt refund your purchase price No refund will be made for packages returned with missing or damaged components 1 License Weaver Engineering Co grants you a nonexclusive right to use the enclosed program The enclosed program may be run on only one computer This license may not be transferred without the written authorization of Weaver Engineering Co You may not a distribute copies of the program or user manual to others b provide sell or sublicense access to or use of the program to other third parties c modify use copy reverse assemble reverse compile or transfer this program or user manual or any copy thereof without prior written consent of Weaver Engineering Co You may make copies of this program solely for backup purposes Such backup copies must be so labeled 2 Copyright This program and user manual is protected by a copyright which is owned by Weaver Engineering Company You may not copy the program or user manual e
39. k You will need to install Graph9 from the installation disk that MS Access 2000 came on If MS Access 15 not installed this is not an issue Refer also to the Readme txt on the cd rom or download for update information 2 1 System Requirements Pentium Processor Windows 95 98 NT 4 0 or 2000 20 MB Free Hard Disk Space for Program 64 MB Ram Recommended FEWeld Chapter 2 Installation 2 2 2 2 Getting Started You are strongly encouraged to read the entire manual and work the example problems before using FEWeld for earnest engineering work 2 2 1 Licensing You must obtain a license key before you can run FEWeld outside of evaluation mode To do this you need to provide Weaver Engineering with the host id of your computer This 1d is based on the network card you have installed FEWeld comes with a utility program for obtaining the host 1d called gethost exe which 1s installed in the FEWeld application directory Running this program will create a file called host txt in the same directory Email or fax the contents of this file to Weaver Engineering and we will send you your license string If it 15 via email it will be attached as icense txt Copy this file to your FEWeld application directory If it 1s faxed create a file called icense txt 1n that directory using a text editor such as Notepad and type in the license string exactly as given FEWeld should now run Note If you have multiple network cards in your comp
40. le 4 3 Move between welds in the Weld FEWeld Chapter 4 Example Problems 4 8 When entering data in the curve list or surface list pressing lt ctrl tab gt will move you out of the list without the mouse Items 1 and 2 FEWeld G wW orkX91 011 XModelsXPipe Lug PracticeXPipe Lug wld Set Name Pipe Lug 01 M Ta al 1 1 px l Set 1 of 1 Set 10 25 Thick Wall Post 1 0 Thick Base Quadratic Displacement Formulation E El Description FEA Model Welds v Welds Entered with 7 Defined E e a eld Joint Description Weld Allowables Number Type 2 01 veld Between Base Plate and Post Pipe a JA a veld Between Post Pipe and Post Pipe End Cap veld Between Post Pipe and Stand Off Pipe W DIRECT_SHEAR 4043 between Stand Off Pipe and Lug Plug vi Weld between Stand Off Pipe and Lug Top M 05b Weld between Stand Off Pipe and Lug Bottom _ 06 4043 Between Lug Plug and Lug Figure 4 11 Weld Definition Status in the Main Window Step 6 Generate the FEWeld FEA Command Macro File When the FEWeld definition for the Pipe Lug 01 weld set is complete FEWeld is ready to write out the FEA Command file Note that the Write Command File button in e 4 11 Item 3 The write fea cmd File command is invoked either by it s button item 3 in Figure 4 TT or with the Analysis gt gt Write FEA md File
41. lection Method By Geometry Surface Area Region etc C By Set Group Component Shell Element Geometry Select sr ij E et ns Figure 4 16 Figure 4 18 Result of running Pipe Lug 01 W05a FEWeld geo in Cosmos FEWeld G Work 91 011 Models Pipe_Lug_Practice Pipe_Lug wld Set Name p 14 4 gt P1 Pipe_Lug_01 14 4 apa x Step 9 Review the Results for Joint Definition iij DE Correctness Description Welds 7 Welds Enteredwith 7 Defined al zo 11 O Al Figure 4 17 E3 Detail Results Control Panel Load Case E Set L1 Weld pyNode Pipe_Lug_01 n P4 5 Detail Results July 01 2000 2000 Detail Weld Results GAWorkt91 011 Models Pipe Lug Practice Pipe _Lug wid Pipe Lug 01 0 25 Thick Wall Post 1 0 Thick Base Quadratic Displacement Form Weld 01 Weld Between Base Plate and Post Pipe a For each node Max Signed tw Weld Throat a for all load cases Weld Direct Shear Basic Weld Throat Determined By Shear from Direct Loads Local Bending Ignored Pipe Lug 01 Weld 01 LC byNode B tw Weld Throat a from Direct Loads Only lt 51 Fillet Leg Size on Terminated Part if fillet weld Open the Detail Results Charting Window by clicking the chart button in the Weld Set main Window Figure 4 17 Item 1 that becomes enabled after results for the Weld Set are successfully read in or by selecting the R
42. lement in terms of the local weld joint coordinate system This information in addition to the part thickness 1s fed into the Weld Formulation a standard or user defined set of mathematical expressions that characterizes the performance in terms of weld parameters and calculate parameter values that meet the performance criteria The formulation can solve either explicit expressions for the design parameters from the load and or stress data or there is a constrained goal seeking facility for more complex formulations FEWeld is implemented as a database which enables rapid evaluation of configuration variations and organizes large models with numerous load cases effectively Detail and summary output are available in report format or readable into spreadsheets for further analysis FEWeld is not a finite element analysis package FEWeld currently works with ANSYS and COSMOS M finite element analysis packages While FEWeld s primary use is for calculation of weldment performance with respect to code requirements FEWeld is not a Code in a Box sound engineering judgement and understanding of the problem at hand are required for successful use of this tool To that end the formulations that are provided with FEWeld have descriptions of what they are 1 e Single Sided Weld based on Throat Shear with no direct reference to code applicability It is up to the user to make the appropriate characterization and define the performance
43. little small let s try a single sided weld Switch over to the Main Window Using the Window menu or closing the chart window if necessary Change the weld type for Weld No 06 to F1 o Notice that if the chart was open it is immediately closed and the defined status of Weld No 06 is now Undefined The weld is un checked Open the Weld Definition Data Window gend refer back to Task 2 Step 5 and set the restraint for Weld No 06 to 1 In the upper and lower Y inch the joint will have a fair degree of restraint against rotation due to the adjacent perpendicular Welds No 05 Now Open the detail chart window This will cause recalculation dialog to be opened Unselecting any items in the calculation list will skip calculation for that item and that weld will remain in the recalculation list and be unavailable for post processing until it is recalculated in the future Leave Weld 06 mr selected and click the Go button Weld No 06 will be The Following Welds are not calculated for their current Formulations Parameters and or Stress Allowables recalculated with a restraint factor of 1 and the chart will be Selected Welds will be recalculated and un selected displayed welds will not have formulation results available Pipe Lug 01 Weld 06 LC byNode Select All Clear All tw Weld Throat a 51 Fillet Leg Size on Terminated Part Set Mame Vela Ma Select 14 1 2 1 0 8 0 6 0 4 0 2
44. lly FEWeld provides a robust mathematical environment for defining and performing calculations of weld requirements based on the load state and the performance criteria PART 2 ES MAKE FROM 5 0 x 6 0 5 5 X x ASTM A36 STEEL PART 1 MAKE FROM OST X 500 TaD O ASTM A36 STEEL pipes ii Pz 3000 lb Py 2810 lb Figure 3 1 Fillet Welded T Bracket Illustrating the Terminated Part and Weld Joint Nodes 3 1 The Terminated Part inspection the Part 1 Stem is the only terminated part in this joint The concept of a terminated part is central to modeling for FEWeld The lower right of the figure shows the elements of the stem and the nodes in the weld joint The nodal stresses in these elements at the joint nodes represent the stress state in the stem at the weld The z component of the stresses are directly the from the tractions loads being transmitted through the weld Specifically o is due to the combination of the Pz Load and the bending 22 moments induced by Px and Py is due to Px transmitted through the weld and is due to Py transmitted through the weld From these stress traction components for the element top and bottom and the part thickness the load components and bending moment about the weld axis per unit length can be calculated On the other hand for the part 2 base for elements on either side of the weld join
45. nated Part if 5000 7149 MaxSigned 045 fillet weld iw Weld Throat a from Direct Loads Only 5000 7149 Signed 032 Load Case 06 Lug Load 75 Degrees S1 Fillet Leg Size on Terminated Part if 5000 7148 Max Signed 037 fillet weld tw Weld Throat a from Direct Loads Only 5000 7148 Max Signed 026 Load Case 07 Lug Load 90 Degrees 51 Fillet Leg Size on Terminated if 5000 7147 Signed 033 fillet weld iw Weld Throat a from Direct Loads Only 5000 7147 Max Signed 024 Weld 03 Weld Between Post Pipe and Stand Off Pipe DIRECT_SHEAR Basic Weld Throat Determined By Shear from Direct Loads Local Sa Set No 4043 Bending Ignored face_angle_deg 45 min leg size 0 S1 Fillet Leg Size on Terminated Part 5000 7149 01 Max Signed 066 if fillet weld tw Weld Throat a from Direct Loads 5000 7149 01 Max Signed 046 Only Weld 03 Weld Between Post Pipe and Stand Off Pipe DIRECT_SHEAR Basic Weld Throat Determined By Shear from Direct Loads Sa_Set No 4043 Local Bending Ignored face_angle_deg 45 min_leg_size 0 S1 Fillet Leg Size on Terminated Part 5000 8785 01 Max Signed 337 if fillet weld tw Weld Throat a from Direct Loads 5000 8785 01 Max Signed 239 Weld 04 Weld between Stand Off Pipe and Lug Plug DIRECT_SHEAR Basic Weld Throat Determined By Shear from Direct Loads Sa_Set No 4043 Local Bending Ignored face_angle_deg 45 min_leg_size 0 S1 Fille
46. not work with previous FEWeld releases FROM CD ROM Execute Setup bat on the CD or Setup exe in the Program directory of the CD FROM FTP UPDATE DOWNLOAD The download FEWeld Update DD MMM is a self extracting zip file that unzips the install files and launches the installer upon completion If you cancel the setup run setup bat from the directory where you unzipped the files Note for MS Access 2000 Users 90 of the time FEWeld will install correctly on computers that also have Microsoft Access 2000 Part of MS Office 2000 Premium installed For the other 10 when FEWeld Starts MS Access 2000 try to will open it and you will get a message asking 1f you would like to convert the file which you can t do In this case copy the FEWeld mde file that 1s included in the f It Doesnt Work Out of The Box With MSAccess2000 subdirectory of the Program directory of this distribution to the FEWeld program directory on your computer WINDOWS 2000 INSTALLATION FROM CD ROM Run the Setup exe contained in the Program for w2000 instead of the Program directory FROM FTP UPDATE DOWNLOAD The download FEWeld2000 Update DD YYYY exe is a self extracting zip file that unzips the install files and launches the installer upon completion Note for MS Access 2000 Users For the windows 2000 installation 1f you have MS Access 2000 installed but not the Graph office tool installed FEWeld charts will not wor
47. on properties of the weld treated as a line weld throat area and section modulus or moment of inertia and polar moment of inertia Loads are calculated at various points of the weld using beam bending formula for moments dividing the direct axial and shear loads by the area and using the Tr J formula for torsion This method ignores any stiffness effects of the connection A sample calculation 15 presented here using the PART 2 MAKE FROM 0 750 x 5 0 x 6 0 ASTM A36 STEEL PART 1 MAKE FROM x B 0 x ASTM A36 STEEL Pz 3000 Ib Py 2810 Ib weld section properties The t joint of Figure 3 ts analyzed at the upper left corner where the load 1s the greatest Weld Loads Total Weld Load Section Properties 2 2 A 2 d Normal Load Jnormar Ty a WE Fo T t nas e 2 Sin t 3005 20242 4662 281 pi 2804 Ib in 3000 Ib Sw x E EETT Required Weld Throat Size 1 in 5 in 5 0 in Loe T 300 Ib in t Pi in Shear 299 4 Ib y y F shear 4 13200 psi 375 5 in w A 0 in x 188 in _ 2814 Ib Applied Loads 0 in Normal Load P 281 Ib in P 3000 lb Bending Load About x fp Shear Load V f M bx 2 2 ie V J 146 Ib 2810 Ib O weld throat in 2814 n 814 Ib 8 33in d Bending Load About x M 2024 Ib in normal bending
48. onality significantly This 1s particularly true with restrained single sided welds that are somewhat small and soft compared to the base metal Often in this situation there will be local bending about the weld axis due to elastic rotation of the mated parts If the base metal remains elastic while the weld 15 yielding the strain on the weld due to the rotations will not increase nearly as fast as the strains due to the direct loads and the joint failure will be aligned with what would be expected from the direct loads However if the base material becomes plastic particularly with respect to rotations the secondary bending loads should be considered If this 1s an 1ssue in your design and you have non linear FEA a good method of obtaining an estimate of the plastic condition at the design ultimate load 15 to run your model with the predicted ultimate load of the structure and perform a FEWeld analysis on that model With non linear analysis FEWeld treats time steps the same as load cases The Pipe Lug example problem in the next chapter 15 a good example of a geometry with secondary bending loads Most common forms of classical analysis for ductile failure prediction throat shear calculations do not consider secondary bending of this sort The Direct Shear formulation in FEWeld ignores the effects of local joint bending loads which when used for connections of compact sections results in the same basic weld size calculation that 1s
49. ries for Ansys and Cosmos For Ansys Create a new model called Pipe Lug 01 1nthe ansys directory The Pipe Lug 01 db is a built by issuing the CDREAD COMB Pipe Lug 0l cdr command Issue LSSOLVE 1 7 1 For Cosmos the directory contains Pipe Lug 0l gfm Create a new model in cosmos called Pipe lug 01 in the cosmos directory and issue the following command from the Cosmos console file pipe lug 01 gfm 0 1 0 This file will build and run the fea model Note The model takes 3 minutes to solve in cosmos 2 5 using the sparse matrix direct solver on a 450 MHz Pentium II with 256 Meg of ram FEWeld Chapter 4 Example Problems 4 3 4 12 Task 2 Build and Run the FEWeld Model Create a new FEWeld file Pipe Lug wld and Build the FEWeld Weld Set Ele Ed Definition inse pede for the Pipe Lug 01 FEA Configuration M Warn an Record Deletions otep 1 Set the Default FEA System for FEWeld Bn Start FEWeld Each FEWeld file has a FEA System setting Now isa good time to set the default FEA system for new files Cancel Select the File gt gt Options menu command The Options dialog will appear as in Figure4 3 Select your preferred FEA System You can set Figure 4 3 FEA Default the FEA system forimdividual files also with the Analysis gt gt Select FEA _ System menu command when a FEWeld file 15 open In File Edit Definition amp nalysis Results Window addi
50. riginally developed at Weaver Engineering as an in house tool for evaluation of weldments against the AWS structural welding codes determination of throat shear and weld size requirements from the results of finite element analysis This enabled us to gain the benefits of load path predictions of finite element analysis for complex structures and apply the classical weld load throat shear formulations upon which the code allowables are based FEWeld originated as a command line tool and the analysis was labor intensive for complex structures where the configuration was undergoing iterations This original configuration had hard coded formulations for single sided welds fillet or partial penetration groove double sided fillet and double sided partial penetration groove welds It could only handle straight welds no pipe or formed sections Circa 1995 1 3 2 Current State The current FEWeld handles general joint geometry pipe connections etc provides a database driven GUI for entering the weldment configuration data performing the analysis and evaluating the results There 15 a Weld Formulation editor that uses a simplified c like mathematical language that allows for very general weld formulations based on loads stresses orientation and geometry The formulation can specify user inputs for each weld such as skew angle prep size restraint that are then incorporated into the GUI for parametric weld definition and outputs are
51. rk 91 011 Models Pipe_Lug_Practice Pipe_Lug wld Set_Name Pipe_ Lug_01 14 a gt l 211 x Read the Weld Results into the FEWeld file by m Set 0 25 Thick Wall Post 1 0 Thick Base Quadratic Displacement Formulation eM clicking the Read Results Button Item 1 in Design Model j Fi gure 4 1 2 with the Welds 7 Welds Entered with 7 Defined al x im in Pls bbs dg irs AIDE UE umber ype e eld Joint Description Analysis gt gt Read FEA Results menu command m EUHEDLIUELDG BES TEENIE 02 01 SHEAR v 4043 Between Post Pipe and Post Pipe End Cap A standard windows file read dialog will appear Figure 4 12 as shown in Figure 4 13 When this file is opened FEWeld wilt begin calculating the weld loads and weld formulations A progress dialog will display the calculation status For a large model this can take a little while although generally it is much faster than the original FEA Progress poke_01 fewinp CEU Wald idcm uv Weld 07 2 Load Case Ma hE File name Take 1 fewinp Open as read only Figure 4 13 solution Figure 4 14 Troubleshooting If there was a gross error in the weld definition such that there 15 no association helpful dun others For example say that you entered curve IBI no 16 instead of 15 for Weld No 05a Calculation Errors and Warnings weld 05a Error Weld 05a There are no nodal stress results for
52. sa DF 4043 Weld between Stand Off Pipe and Lug Top O os or 093 between Stenc Off Pipe and Lug Bottom O os or 404s WwedBeweenLurPugendLug O 2 Allowables Sets Fa z 14 4 pl Set 1 of 1 FEWeld G Work 91 011 Models Pipe_Lug_Practice Pipe_Lug wld 14 4 1 set Name Pipe Lug_01 Set 1 of 1 a Set 0 25 Thick Wall Post 1 0 Thick Base Quadratic Displacement Formulation Ej E Description FEA Model Ale 4 1 Welds 7 Welds Entered with 0 Defined s Weld Weld Number Type Weld Joint Description Weld Joint Description DP O1 DRECT SHEAR Between Base Plate and PostPpea ED L 2 SHEAR eld Between Post Pipe Post Pine End Gap UG DRECT SHEAR vela Between Post Pipe and Stend Orf Pipe 04 DIRECT SHEAR vela between StandOff Pipe and Lug Plag O tal oF fied between StandOFf Pipe and Lug Top 8 v Stress Allowable Sets Weld between Stand Off Pipe and Lug Bottom O Set ID Dedos 058 Dr Between Lug Plug and Lug L1 25 An FE ADAS Electrode cc Uii P 5356 356 Electrode IS 00 rl Load Cases 7 Load Cases Allowable Stresses Fa 7 Load Cases Allowable Stresses Fa LoadCase Description 043 Y n Description 4043 5356 Lug Load O Degrees Vertical Down Lug Load 15 Degrees Lug Load O Degrees Vertical Down Lug Load 15 Degrees Lug Load 30 Degrees Lug Load 45 Degrees Lug Load 60
53. shown in Figure 3 6 give the local c 19560 psi Normal Stress at Top of Joint Weld loads at each node as load per unit length For calculating 51 7884 psi Normal Stress at Bottom of Joie sizes from these results the section properties per unit length of weld need to be calculated avg 390 2 psi Average Shear Stress in Joint 2530psi 1210 psi 2 2 avg yz avg T avg 1910 psi Joint Normal Load ot Ob Ibf th 5146 2 in Joint Bending Load 2 Ot Obi fp in lbf 136 8 2 6 in Joint Shear Load Ibf V V 716 4 t avg b Tm Figure 3 6 Load Calculation for One Node FEWeld Chapter 3 Theoretical Overview Excerpts from the Manual 3 5 3 6 Weld Throat Stress Calculation 1 unit length NSN From the weld load components Tj Tws Mw and the weld section properties for a given weld size the weld throat stress components can be determined as follows SS Stress due to normal load P Double Sided Fillet Weld 1 Treated as a Line Weld Throat Area Aa ly Stress due to bending 2 M Moment of Inertia J En J bending x Ww Section Modulus Bo he p Stress due to shear y b Jas A y Total stress magnitude A weld size S f normal 2 2 weld 7 bending T 7 shear NY weld throat ty are combined so that their magnitudes are
54. t the traction through the element edge associated with the weld joint 1s a combination of the loads from the weld and the loads from base plate elements on the other side of the weld FEWeld Chapter 3 Theoretical Overview Excerpts from the Manual 3 2 For t joints and lap joints there is one terminated part for each weld For butt and corner joints both parts entering the weld are terminated Many joint configurations such as flare v groove welds have no terminated part on their own Similar to modeling welds with solid elements the weld connection must be modeled with shell elements to create a terminated part Several examples of this technique are given an discussed in the FEA Modeling Guidelines Chapter 5 SURFACE LJ SURFACE Y NORMAL eoque VA e XA UV SS cfe NU S3 pons m NORMAL WELD H TERMINATED PART ERMINATED PART Figure 3 2 Weld Joint Coordinate System wjc of the Terminated Part 3 2 Weld Joint Coordinate System Coordinate System wjc 1s defined in terms of the local geometry of the elements with edges in the joint at each node of the joint The three directions of the wjc are The Weld Joint Normal u the Weld Axis uw and the Surface Normal us The order of the coordinates is j w s e The Weld Axis uy runs in the direction of the weld seam and is oriented such that it points in the counter clockwise direction around
55. t Leg Size on Terminated Part 5000 11328 07 Max Signed 109 if fillet weld tw Weld Throat a from Direct Loads 5000 11328 07 Max Signed 077 Only Load Case 01 Lug Load 0 Degrees Vertical Down gt 51 Fillet Leg Size on Terminated Part if 5000 8785 Max Signed 337 fillet weld iw Weld Throat a from Direct Loads Only 5000 8785 Signed 239 Load Case 02 Lug Load 15 Degrees S1 Fillet Leg Size on Terminated Part if 5000 8785 MaxSigned 326 fillet weld iw Weld Throat a from Direct Loads Only 5000 8785 Max Signed 231 Load Case 03 Lug Load 30 Degrees S1 Fillet Leg Size on Terminated Part if 5000 8785 Max Signed 308 fillet weld tw Weld Throat a from Direct Loads Only 5000 8785 Max Signed 218 Load Case 04 Lug Load 45 Degrees S1 Fillet Leg Size on Terminated Part if 5000 8785 Max Signed 284 fillet weld tw Weld Throat a from Direct Loads Only 5000 8785 Max Signed 201 Load Case 05 Lug Load 60 Degrees 51 Fillet Leg Size on Terminated Part if 5000 10123 Max Signed 268 fillet weld tw Weld Throat a from Direct Loads Only 5000 10123 Max Signed 19 Load Case 06 Lug Load 75 Degrees 51 Fillet Leg Size on Terminated if 5000 10122 Signed 269 fillet weld tw Weld Throat a from Direct Loads Only 5000 10122 Max Signed 19 Load Case 07 Lug Load 90 Degrees S1 Fillet Leg Size on Terminated Part if 5000 10122 Max Signed
56. this weld The weld joint node selection specification resulted in Pipe Lug 01 an empty set and must be corrected for this joint Figure 4 15 For Cosmos just typing the file command and pressing return will bring up the standard windows file read dialog box to browse and pick the file Or type in the filename FILE Pipe Lug 01 FEWeld geo FEWeld Chapter 4 Example Problems 4 10 To identify the error open the weld definition data window for weld 05a Either manually query the Weld Geom button Item 1 in Figure 4 16 The Test Weld Geom command will write out a file titled Pipe Lug 01 W05a FEWeld cmd where cmd 1s mac for Ansys and geo for Cosmos Executing this file in the FEA program should select and display the Geometry Curves Lines Areas Surfaces Regions etc selected for the weld the definition and return to Step 6 Generate the FEWeld FEA EET rere EE m Weld No 05 14 4 gt gt i gt Weld between Stand Off Pipe and Lug Top Description n GeoStar 2 5 64K Version pipe lug 01 T File Edit Geometry Meshing PropSets LoadsBC Control Display Analysis Results Windows Help 81 WeldT ppe pr Orientation CG Parameter Name b mintegsize ___ 0 face ange deg 45 m Allowables Set 4043 Coord Sys jo Test Weld mL Nodes Selection Method By Curves C By Set Group Component Curve List Terminated Part Element Se
57. tion to affecting the command file format the fea system setting affects the input for defining the weld nodes and elements in the weld definition window New Weld Set Step 2 Create new FEWeld File New Set Name gt Description Cancel Select the File gt gt New menu command Navigate to the Sample Problems Pipe Lug Directory Type in file name be created and opened The screen should look like Figure Figure 4 4 New FEWeld File 4 41 Step 3 Create a new Blank Weld Set File Edit Definition Analysis Results Window e In the New Set Dialog of Figure 4 4 Type 1n FEWeld G Work 91 0115 Models Pipe_Lug_Practice Pipe_Lug wld Pipe Lug 01 for the Set Name and 0 25 Thick Wall 3 Pipe Lug 01 UAT s Di EE Post Quadratic Displacement Formulation FEA ei a5 Thick Wa Quedate Digacenenomdaion _ 8 gl Model for the description and click Accept Welds 0 veined of The New Set Dialog will close and the Weld Set main P Weld Jon Description window will appear as shown in vFigure 4 5 Step 4 Populate the Weld Set with Weld Load Case and Criteria Definitions Load Cases Olemcae LoadCase Description The Weld Set main window is free form in that there is L3 A no required order for putting in welds load cases and Stress Allowable Sets Figure 4 5 Empty Weld Set Entering The Welds The Window Since there are 7 welds counting w
58. uter and you want FEWeld licensed to a card other than the one provided by gethost exe call us If you do not have a network in your computer let us know we will be providing dongle licensing soon 2 2 2 Evaluation Mode FEWeld runs without a license 1n evaluation mode The following restrictions apply o Weld Formulations cannot be created or edited o Files can only be created and edited Existing files except sample files as below cannot be re opened o The sample files provided in the distribution can be opened and edited once only 2 2 3 Training Weaver Engineering offers training periodically Check our website at www feweld com or call us for schedules 2 2 4 Technical Support The purchase of FEWeld provides one year of technical support After that annual maintenance will continue technical support which also provides continuous updates to the software Telephone 206 352 8027 Fax 206 352 8035 Email techsupt feweld com FEWeld Chapter 3 Theoretical Overview Excerpts from the Manual 3 1 Chapter 3 Theoretical Overview Excerpts from the Manual The formulation used for a finite element shell model 15 that of full penetration welds at every joint Although the loads carried through joints are calculated by FEA they are not readily usable for weld calculations FEWeld extracts from the fea results load and stress information and presents it in a form that 1s readily usable for weld calculations Additiona
59. venues lost data or recreating lost data substitute programs nor any claims of third parties This disclaimer shall apply regardless of any notice to Weaver Engineering Company of the possibility of such damages 7 Exclusive Remedies Upon breach of the Limited Warranty stated above Weaver Engineering Co shall at its option 1 provide a corrected program to you or 2 provide a corrected User Manual or 3 refund the fee paid for the program without charge to you In no case shall Weaver Engineering Company s liability exceed the amount of the license fee paid or 100 U S whichever is greater These are the exclusive remedies agreed in case of breach of the Limited Warranty 8 Acknowledgement You acknowledge that you have read this agreement and are bound by its terms that this agreement is the complete and exclusive agreement of the parties hereto and that it supersedes any and all communications proposals representations and agreements oral or written previously or subsequently made between the parties This agreement shall be enforced and interpreted in accordance with the laws of the State of Washington and applicable laws of the United States If any provision of this agreement is determined to be invalid or unenforceable the validity or enforceability of the other provisions shall not be affected 9 Notices All Notices required by this agreement questions pertaining thereto or concerning the enclosed program and User M
60. xcept for the purpose of backup as stated above and to load the program into a computer for executing the program All other copies of the program and user manual except as stated herein are in violation of this agreement and Weaver Engineering Co s copyright 3 Term The term of this license is effective until terminated by your failure to comply with this agreement and Weaver Engineering Co s copyright You may terminate the license by destroying the program user manual and all copies thereof and returning any security devices along with written notice to Weaver Engineering Co of such termination 4 Restrictions This program contains software and technical data that is subject to the export laws orders and restrictions of the United States You may not directly or indirectly import export re export transship or use the program in any country or destination that requires an export license other approval for export or is in any way contrary to U S laws without having obtained such permission Any license to the U S Government is subject to the restricted rights as stated in the following documents and any amendments and successors thereto For the Department of Defense DFARS 252 227 7013 Rights in Technical Data and Computer Software DFARS 252 227 7037 Validation of Restrictive Markings on Technical Data For the National Aeronautics and Space Administration NFARSUP 18 52 227 19 Commercial Computer Software Restricted Rights
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