WORKSHOP 6 FRAME SURFACE MODEL ANALYSIS

Transcription

1 WORKSHOP 6 FRAME SURFACE MODEL ANALYSIS WS6-1

2 WS6-2

3 Workshop Ojetives Crete finite element moel (meshes; onnet jent elements; pply e los, operting los, n grvity los; onstrin noes) for intermeitely iffiult frme system using MSC.Ptrn Perform n nlysis of the moel, n postproess the results from the nlysis. The results tht re looke t re 1) eformtion, 2) von Mises stress fringe, n 3) mrker tensor using two ifferent oorinte system trnsformtions. Prolem Desription Compre stress for ifferent trnsformtions Frme mteril: Aluminum with E = 10 x 10 6 psi, ν = 0.3, n ensity = 2.61 x 10-4 lf*se 2 /in 4 Softwre Version MSC.Ptrn 2005r2 MSC.Nstrn 2005r2 WS6-3

4 Key Conepts n Steps: Dtse: rete new tse with Anlysis Coe = MSC.Nstrn n Anlysis Type = Struturl Geometry: open MSC.Ptrn tse to ess the surfe geometry Elements: mesh the surfes with the Pver mesher, onnet the jent elements, n etermine the spet rtio of the elements Los/BCs: onstrin the four orners of the frme, n pply Totl lo n grvity loing to the moel Mterils: speify n isotropi mteril for Aluminum Properties: rete 2D plte/shell property Anlysis: Solution Type = Nstrn Liner Stti, Solution Sequene = 101, Metho = Full Run Anlysis: ess nlysis results y tthing the XDB file to tse Results: plot eformtion, von Mises stress, n mrker tensor results. Use two ifferent oorinte system trnsformtions for the mrker tensor results. WS6-4

5 Step 1. Open Dtse surf_rete_prt2.. File / Open.. File nme: surf_rete_prt2.. Clik OK. WS6-5

6 Step 2. Crete Group for 2D Pver Meshes. Group / Crete.. New Group Nme: fem_surfes.. Chek Mke Current.. Apply. e. Cnel. e WS6-6

7 Step 3. Crete Pver Mesh for All Surfes. Elements: Crete / Mesh / Surfe.. Elem Shpe: Qu.. Mesher: Pver.. Topology: Qu4. e. Clik uner Surfe List n selet ll surfes in the figure, Surfe 1:182. f. Glol Ege Length: 1.0. g. Apply. e e f g WS6-7

8 Step 3. Crete Pver Mesh for All Surfes (Cont.) These re the Pver meshes, one for eh of the 182 surfes. WS6-8

9 Step 5. Equivlene Noes. Elements: Equivlene / All / Tolerne Cue.. Equivlening Tolerne: Apply. WS6-9

10 Step 6. Show Element Free Eges. Elements: Verify / Element / Bounries.. Disply Type: Free Eges.. Apply. WS6-10

11 Step 9. Verify Elements. Elements: Verify / Qu / Aspet.. Aspet Rtio: 5.. Apply. WS6-11

12 Step 10. Post Group ll_surfes. Group / Post.. Uner Selet Groups to Post selet ll_surfes.. Apply.. Cnel. WS6-12

13 Step 11. Crete De Lo from Engine. Chnge view to Smooth she.. Zoom into the re s shown in the figure. WS6-13

14 Step 11. Crete De Lo from Engine (Cont.). Los/BCs: Crete/ Fore/Nol.. Selet on New Set Nme n enter e_lo.. Input Dt.. Enter < > for Surf Lo <F1 F2 F3 >. e. OK. f. Selet Applition Region. g. Geometry Filter: Geometry. h. Selet on Selet Geometry Entities. g h f e WS6-14

15 Step 11. Crete De Lo from Engine (Cont.). Selet points s shown in the figure.. A.. OK.. Apply. WS6-15

16 Step 11. Crete De Lo from Engine (Cont.). Chnge to the moel region shown in the figure. WS6-16

17 Step 11. Crete De Lo from Engine (Cont.). Selet on New Set Nme n enter e_lo_2.. Input Dt.. Enter < > for Surf Lo <F1 F2 F3 >.. OK. e. Selet Applition Region. f. Geometry Filter: Geometry. g. Selet on Selet Geometry Entities. f g e WS6-17

18 Step 11. Crete De Lo from Engine (Cont.). Selet points s shown in the figure.. A.. OK.. Apply. WS6-18

19 Step 11. Crete De Lo from Engine (Cont.). The figure shoul look like the following.. Zoom out. WS6-19

20 Step 12. Crete Operting Engine Stti Lo. Selet on New Set Nme n enter op_stti_lo.. Input Dt.. Enter < > for Surf Lo <F1 F2 F3 >.. OK. e. Selet Applition Region. f. Geometry Filter: Geometry. g. Selet on Selet Geometry Entities. f g e WS6-20

21 Step 12. Crete Operting Engine Stti Lo (Cont.). Selet points s shown in the figure.. A.. OK.. Apply. WS6-21

22 Step 12. Crete Operting Engine Stti Lo (Cont.). The figure shoul look like the following. Although the fore iretions my pper vertil, they re in ft off ngle. Different views n e use to oserve this. WS6-22

23 Step 13. Crete Grvity Lo on Frme. Los/BCs: Crete/Inertil Lo/Element Uniform. Enter grvity for New Set Nme.. Input Dt.. In Trns Ael <A1 A2 A3> enter < >. e. OK. f. Apply. WS6-23 e

24 Step 14. Crete Constrints for the Frme Support Constrin t the orners of the frme.. Los/BCs: Crete/ Displement/Nol.. Selet on New Set Nme: n enter fix_se.. Selet Input Dt.. Enter <0 0 0> for Trnsltions <T1 T2 T3 >. e. OK. f. Clik on Selet Applition Region. g. Selet Geometry for Geometry Filter. g f e WS6-24

25 Step 14. Crete Constrints for the Frme Support (Cont.). Clik uner Selet Geometry Entities.. Pik the Points ion.. Chnge to wirefrme.. Selet the four points s shown. e. A. f. OK. g. Apply. e f WS6-25

26 Step 14. Crete Constrints for the Frme Support (Cont.). Selet on Iso 1 View from the tool r.. Disply / Lo/BC/Elem.Props.. Unselet Show LBC/El.Prop. Vlues.. Apply. e. Cnel. f. The figure shoul look like the following. f e WS6-26

27 Step 15. Defining Mteril Set luminum s the mteril of the frme.. Mterils: Crete / Isotropi / Mnul Input.. Selet on Mteril Nme n enter luminum.. Selet Input Properties.. Enter: Elsti Moulus: 10e6. Poisson Rtio: 0.3. Density: 2.61e-4. e. OK. f. Apply. e WS6-27

28 Step 16. Defining Properties for Frme Struture. Properties: Crete / 2D / Shell.. Selet Property Set Nme n enter lfrme_flnge.. Selet Input Properties.. Clik on Mt Prop Nme selet luminum from Selet Mteril. e. Thikness: f. OK. e f WS6-28

29 Step 16. Defining Properties for Frme Struture (Cont.). Chnge view to Front View.. Clik on Preferenes/Piking.. Chnge to enlose entire entity.. Clik on Selet Memers. e. Selet top n ottom flnges s shown in the figure. f. A. g. Apply. e Selet flnge surfes f g WS6-29

30 Step 16. Defining Properties for Frme Struture (Cont.). Preferenes / Piking.. Retngle/Polygon Piking: Enlose ny portion of entity.. Close.. Selet Property Set Nme n enter l_frme_we. e. Selet Input Properties. f. Clik Mt Prop Nme ion n hoose luminum from Selet Mteril. g. Thikness: 0.5. h. OK. g f f e h WS6-30

31 Step 16. Defining Properties for Frme Struture (Cont.). Clik on Selet Memers.. Selet the we surfes(etween flnges; trimme surfes with holes) of the frme s shown in the figure.. A.. Apply. Selet we surfes Flnge surfe WS6-31

32 Step 17. Chek Assignment of Los n BC s to Lo Cse. Lo Cses: Moify.. Selet Defult in Selet Lo Cse to Moify.. Chek tht ll Los n BC s re selete.. Cnel. WS6-32

33 Step 18. Post Group fem_surfes. Group / Post.. Uner Selet Groups to Post selet fem_surfes.. Apply.. Cnel. WS6-33

34 Step 19. Anlysis Run the nlysis of the entire moel.. Anlysis: Anlyze / Entire Moel / Full Run.. Selet Solution Type.. Choose LINEAR STATIC for Solution Type.. OK. e. Apply. e WS6-34

35 Step 20. Aess Results Uner Anlysis Atth the.x file in orer to ess the results.. Anlysis: Aess Results/ Atth XDB/Result Entities.. Clik on Selet Results File.. Selet n tth the file surf_rete_prt2.x.. OK. e. Apply. e WS6-35

36 Step 21. Deformtion Results Crete eforme shpe plot.. Results: Crete / Deformtion.. Selet A1:Stti Suse uner Selet Result Cse(s).. Selet Displements, Trnsltionl uner Selet Deformtion Result.. Selet Disply Attriutes. e. Clik on Moel Sle n set the sle to f. Unselet Show Uneforme. g. Apply. f e WS6-36 g

37 Step 21. Deformtion Results (Cont.) Disply shows the eforme shpe of the struture. WS6-37

38 Step 21. Deformtion Results (Cont.). Rener Style: She.. Apply. WS6-38

39 Step 22. Stress Fringe Results. Crete / Fringe.. Selet Stress Tensor uner Selet Fringe Result.. Selet Position ((NON- LAYERED)).. Choose At Z1. e. Close. f. Quntity: von Mises. g. Apply. f g e WS6-39

40 Step 22. Stress Fringe Results (Cont.). The figure shoul look like the following. WS6-40

41 Step 23. Stress Mrker Results. Reset grphis.. Crete / Mrker / Tensor.. Selet Stress Tensor uner Selet Fringe Result.. Selet Position ((NON- LAYERED)). e. Choose At Z1. f. Close. g. Chek only XX n YY. h. Disply Attriutes. i. Unhek Show Mx/Min Lel. j. Unhek Show Tensor Lel. h k e k. Plot Options. l. Coorinte Trnsformtion: As Is. m. Apply. g m f i j WS6-41

42 Step 23. Stress Mrker Results (Cont.). Zoom in to the figure shown.. The mrkers re for XX n YY omponents of stress using the oorinte trnsformtion As Is (no trnsformtion). WS6-42

43 Step 23. Stress Mrker Results (Cont.). Reset grphis.. Plot Options.. Coorinte Trnsformtion: Glol.. Apply. WS6-43

44 Step 23. Stress Mrker Results (Cont.). The figure shoul look like the following.. The only ifferene etween this plot n the previous one is tht the oorinte trnsformtion Glol ws use to rete this plot. This mens the stress omponents re isplye in the MSC.Ptrn glol oorinte system.. File / Close. This ens this exerise. WS6-44