WORKSHOP 19 GLOBAL/LOCAL MODELING USING FEM FIELDS

WORKSHOP 19 GLOBAL/LOCAL MODELING USING FEM FIELDS WS19-1

WS19-2

Prolem Desription This exerise is use to emonstrte how to mp isplement results from the nlysis of glol(overll) moel onto the perimeter of lol(etil/ omponent of overll) moel. The lol moel is use for n nlysis to otin results for the etil/omponent. The glol moel n its results re re into n MSC.Ptrn tse. The results re use in the retion of vetor FEM fiel. The FEM fiel is use to mp the glol moel isplement results onto the lol moel perimeter. Also, pressure lo is pplie to the lol moel. An nlysis of the lol moel is performe. The isplement results for oth glol n lol moels re ompre. WS19-3

Suggeste Exerise Steps 1. Open new tse. 2. Crete group for the glol moel. 3. Use nlysis form to re moel n results for glol moel. 4. Turn off ll lels n reset the view to n isometri view. 5. Crete group for the lol moel. 6. Use nlysis form to re lol moel. 7. Post only the group for the glol moel for isplying its results. 8. Disply the efletions n stresses of the glol moel. 9. Set the isplements to true sle 1.0. 10. Crete vetor plot of isplements for the glol moel. 11. With the vetor plot isplye, rete ontinuous, sptil, Vetor FEM fiel using the glol isplements. 12. Post only the etile lol pnel moel. 13. Crete group to e use for reting LBCs for the lol moel. 14. Crete lo se for the lol moel LBCs. WS19-4

Suggeste Exerise Steps (ontinue) 15. Crete Los/BCs for the lol moel. 16. Post n mke urrent the group for the lol moel. 17. Crete uniform pressure for the lol moel. 18. Crete MSC.Nstrn input file for nlysis of lol moel. 19. Run MSC.Nstrn. 20. Aess results. 21. Post proess results. 22. Crete viewport so hve one for eh moel. 23. Post oth glol n lol moel. 24. View the results for eh moel simultneously. 25. Quit MSC.Ptrn. WS19-5

Step 1. Crete New Dtse Open tse.. File : New.. Enter qurter_plte for File Nme.. Clik OK.. Uner New Moel Preferenes, selet Bse on Moel Tolerne. e. Selet MSC.NASTRAN for Anlysis Coe. f. Selet Struturl for Anlysis Type. g. Clik on OK. g f e WS19-6

Step 2. Crete Group for Glol Moel Crete group n mke it urrent for the glol moel s follows.. Group : Crete. Enter glol_los_moel for New Group Nme.. Selet the Mke Current n Unpost All Other Groups hek oxes.. Clik on Apply. e. Clik on Cnel. WS19-7 e

Step 3. Use Anlysis to Re Moel/Results for Glol Use Anlysis to re in oth the moel n results of the Glol Los Moel.. Anlysis : Aess Results / Re Output2 / Both.. Clik Selet Results File. Selet multi_ell_ox.op2 for Selet File.. Clik on OK. e. Clik on Apply. e WS19-8

Step 4. Turn off All Lels Set the isply options to get etter representtion of the moel.. Clik on Hie ll entity lels.. Clik on Iso1 view.. Clik on Fit view. WS19-9

Step 5. Crete Group for Lol Moel Crete nother group, mking it urrent, lle pnel_moel.. Group : Crete. Enter pnel_moel for New Group Nme.. Selet the Mke Current n Unpost All Other Groups toggles.. Clik on Apply. e. Clik on Cnel. Note tht the viewport is lere WS19-10 e

Step 6. Use Anlysis to Re Moel for Lol Uner, Anlysis, re in MSC.NASTRAN input ek tht represents the etile pnel stress moel.. Anlysis: Re Input File / Moel Dt.. Clik on Entity Seletion. Clik on Define Offsets e. Enter 1000 for Input Offset Vlue for the Noes row n press the Enter key. e. Enter 1000 for Input Offset Vlue for the Elements row n press the Enter key. f. Clik on OK. g. Clik on OK. WS19-11

Step 6. Use Anlysis to Re Moel for Lol Selet the input file to re into the input ek.. Clik on Selet Input File... Selet pnel.f for Selet File.. Clik on OK.. Clik on Apply. e. Clik OK for the Nstrn input file summry. WS19-12

Step 7. Post Only Glol Moel Group for Results Disply Now post only the glol_los_moel group.. Group: Post. Selet glol_los_moel for Selet Groups to Post.. Clik on Apply.. Clik on Cnel. e. Go to Viewing: Angles f. Enter 25 60 0 uner Angles. g. Clik on Apply. f g h h. Clik on Cnel. i. Clik on the Fit view ion. WS19-13

Step 8. Glol Moel Defletions n Stresses Look t the efletion n stresses of the glol los moel using the si Results form.. Results: Crete / Quik Plot.. Clik on the Selets Results ion.. Selet Defult, Stti Suse for Selet Result Cse(s).. Selet Stress Tensor for Selet Fringe Result. e. Selet Displements, Trnsltionl for Selet Deformtion Result. f. Clik on Apply. e f WS19-14

Step 9. Set the Displements to True Sle 1.0 Now selet the isplements to show true vlues (sle ftor=1.0, iret multiplition).. Selet Deform Attriutes ion. Selet the True Sle toggle.. Enter 1.0 for Sle Ftor.. Clik on Apply. e. After oserving the moifie results, reset the grphis. WS19-15

Step 10. Crete Vetor Plot of Displements Now, rete vetor plot of isplements.. Results: Crete / Mrker / Vetor.. Selet Defult, Stti Suse for Selet Result Cse(s).. Selet Displements, Trnsltionl for Selet Vetor Result.. Clik the Disply Attriutes ion e. Deselet Show Vetor Lel. f. Clik on Apply. e WS19-16

Step 10. Crete Vetor Plot of Displements (Cont.) The moel shoul now pper s follows: WS19-17

Step 11. Crete Vetor FEM Fiel From Glol Displements With the vetor plot isplye, rete ontinuous, sptil, vetor FEM fiel lle Displements_Glol_Moel.. Fiels: Crete / Sptil / FEM.. Enter Displements_ Glol_Moel uner Fiel Nme.. Selet Continuous for FEM Fiel Definition.. Selet Vetor for Fiel Type. e. Selet All Groups for Mesh/Results Group Filter. f. Selet glol_los_moel for Selet Group. g. Clik on Options h. Selet Liner Extrpoltion for Extrpoltion Option. i. Clik on OK. j. Clik on Apply. k. Reset the Grphis. e f g h i WS19-18 j

Step 12. Post Only the Lol Moel Group for LBCs Cretion Now post only the group pnel_moel; it is the etile moel of the pnel.. Group: Post. Selet pnel_moel for Selet Groups to Post.. Clik on Apply.. Clik on Cnel. WS19-19

Step 13. Crete Group for Creting Lol Moel Displ LBC Crete group nme Pnel_Moel_Ege_Noes.. Group: Crete.. Enter Pnel_Moel_ Ege_Noes for New Group Nme.. Selet Mke Current n Unpost All Other Groups.. Enter Noe 10000 T # for Entity Seletion. e. Clik on Apply. f. Clik on Cnel. WS19-20

Step 13. Crete Group for Creting Lol Moel Displ LBC (Cont.) Using the slie r, mke the noes more visile.. Disply: Finite Elements. Use the slie r uner Noe Size to selet 5.. Clik on Apply.. Clik on Cnel. WS19-21

Step 14. Crete Stti Lo Cse for Lol Moel Crete stti lo se lle Pnel_Moel_Los.. Lo Cses: Crete. Enter Pnel_Moel_Los for Lo Cse Nme.. Selet Mke Current.. Selet Stti for Type. e. Clik on Apply. WS19-22

Step 15. Crete Los/BCs for Lol Moel Crete n enfore nol isplement ounry onition nme Pnel Enfore Displements.. Los/BCs: Crete / Displement / Nol.. Enter Pnel Enfore Displements for New Set Nme. g. Clik on Input Dt. Selet Displements_Glol_Moel in Sptil Fiels tox for Trnsltions <T1 T2 T3>. e. Clik OK. f. Clik on Selet Applition Region g. Selet the FEM Filter. h. Sreen pik ll the noes in the viewport for Selet Noes. i. Clik on A. i h j. Clik on OK. k. Clik on Apply. f e j WS19-23

Step 15. Crete Los/BCs for Lol Moel e Set the noe size k to 1.. Disply: Finite Elements. Selet 1 for Noe Size y using the slier.. Clik on Apply.. Clik on Cnel. e. Turn off the vetor vlues using Disply: Lo/BC/ Elem. Props f. Deselet Show LBC/EI. Prop. Vlues. g. Clik on Apply. h. Clik on Cnel f WS19-24

Step 16. Post n Mke Current the Lol Moel Post n mke urrent the Pnel Moel.. Group: Post. Selet pnel_moel for Selet Groups to Post.. Clik on Apply.. Clik on Cnel. WS19-25

Step 17. Crete Uniform Pressure for Lol Moel Crete uniform pressure lle Pnel Pressure pplie to ll 2D qus on the top surfe.. Los/BCs: Crete / Pressure / Element Uniform.. Enter Pnel Pressure for New Set Nme.. Selet 2D for Trget Element Type.. Clik on Input Dt e. Enter 2.25 for Top Surf Pressure. f. Clik on OK. g. Clik on Selet Applition Region e h j i h. Selet the FEM Filter. i. Sreen pik ll the elements in the viewport for Selet 2D Elements or Eges. j. Clik on A. k. Clik on OK. g f k l. Clik on Apply. l WS19-26

Step 17. Crete Uniform Pressure for Lol Moel Illustrte elow is the moel. After oserving this view, reset the grphis. WS19-27

Step 18. Crete MSC.Nstrn Input File for Lol Moel Use Anlysis Dek pik to rete n MSC.Nstrn input file. Cll the jo nme new_pnel.. Anlysis: Anlyze / Selete Group / Anlysis Dek.. Enter new_pnel for Jo Nme.. Clik on Selet Group, then selet Selet Current Group. e f i. Clik on Trnsltion Prmeters e. Selet OP2 for Dt Output. f. Selet Text for OUTPUT2 Formt. g. Clik on OK. h. Clik on Solution Type i. Selet Liner Stti for Solution Type. j. Clik on Solution Prmeters k. Enter 1.0 for Plte Rz Stiffness Ftor. l. Clik on OK. h j m. Clik on OK. WS19-28

Step 18. Crete MSC.Nstrn Input File for Lol Moel (Cont.) Continue to rete the input ek.. Clik on Suses. Set Ation to Crete.. Enter Pnel_Moel for Suse Nme.. Selet Pnel_Moel_Los for Aville Lo Cses. e. Clik on Apply. f. Clik on Cnel. g. Clik on Suse Selet h h. Selet Pnel_Moel for Suses For Solution Sequene: 101. i. Clik on OK. j. Clik on Apply. i g WS19-29 e f

Step 19. Run the Anlysis If MSC.Nstrn is on the network, the jo n sumitte using the file new_pnel.f for nlysis, then import the results file, new_pnel.op2, into the tse n look t the moel stresses n eformtions.. Run MSC.Nstrn.. Fin n Open new_pnel.f.. Clik on Open.. Clik on Run. e. Chek for ftl errors y opening up the file new_pnel.f06 (it is text file) n serhing for the wor ftl. If no ftl errors exist, then the nlysis omplete suessfully. Copyright 2004 MSC.Softwre Corportion WS19-30

Step 20. Aess Results Continue to view results in PATRAN.. Anlysis: Aess Results / Re Output2 / Result Entities.. Clik on Selet Results File. Selet new_pnel.op2.. Clik on OK. e. Clik on Apply. Copyright 2004 MSC.Softwre Corportion WS19-31

Step 21. Post Proess Results View the results in fringe plot.. Results: Crete / Fringe.. Selet Pnel_Moel_Los, Stti Suse for Selet Result Cse(s).. Selet Displements, Trnsltionl for Selet Fringe Result.. Clik on Apply. Copyright 2004 MSC.Softwre Corportion WS19-32

Step 23. Post Moel to Eh Viewport Chnge the group eing poste in the viewport glol_lo.. Mke the viewport glol_lo tive y liking insie the winow.. Groups: Post. Selet glol_los_moel.. Clik on Apply. e. Clik on Cnel. Copyright 2004 MSC.Softwre Corportion WS19-35

Step 24. View Results for Eh Moel Simultneously View the results for the moel in the group glol_los_moel.. Results: Crete / Fringe.. Selet Defult, Stti Suse for Selet Result Cse(s).. Selet Displements, Trnsltionl for Selet Fringe Result.. Selet Y omponent for Quntity. e. Clik on Apply. Pnel_Moel_Los, Stti Suse Copyright 2004 MSC.Softwre Corportion WS19-36

Step 24. View Results for Eh Moel Simultneously In orer to simplify ompring the two moel s result single rnge will e use.. Clik insie the viewport tht ontins the pnel moel (efult_viewport) to mke it tive.. Results: Crete / Fringe. Selet Pnel_Moel_Los, Stti Suse. Selet Displements, Trnsltionl e. Selet the Disply Attriutes ion. f. Clik on Rnge g. Selet Fri_efult_Fringe2. h. Selet Post Rnge to Viewport. i. Clik on OK. j. Clik on Apply e g f h Copyright 2004 MSC.Softwre Corportion WS19-37

Step 24. View Results for Eh Moel Simultneously Compre the viewports. Notie tht the olors on the eges of the pnel moel re ientil to those of the glol moel. Copyright 2004 MSC.Softwre Corportion WS19-38