1. WS 4 - 1 Mar120 - Patran Day 1 Overview - Results POST PROCESSING OF STRESS RESULTS

2. WS 4 - 2 Mar120 - Patran Day 1 Overview - Results Workshop 4 – Introduction to MSC.Patran

3. WS 4 - 3 Mar120 - Patran Day 1 Overview - Results n Objectives u To post-process stress results from MSC/NASTRAN. u To use MSC/PATRAN to create fill and fringe plots to determine if the analyzed part will meet a customer-defined criteria or whether the part needs to be re-designed and re-analyzed. Workshop 4 – Introduction to MSC.Patran

4. WS 4 - 4 Mar120 - Patran Day 1 Overview - Results n Model Description u In this exercise, you will examine the stress results of the clevis model analyzed using the MSC.Marc code by rendering a variety of fringe and element fill plots. Workshop 4 – Introduction to MSC.Patran

5. WS 4 - 5 Mar120 - Patran Day 1 Overview - Results Workshop 3 – Introduction to MSC.Patran n Suggested Exercise Steps 1.Open up a database. 2.Analyze and attach results. 3.Read results. 4.Display range. 5.Create quick plot. 6.Create a viewport and group. 7.Create a new range. 8.Create 1 st Invariant Plot with Custom Range

6. WS 4 - 6 Mar120 - Patran Day 1 Overview - Results Step 1. Open Up a Database Create a new database named clevis.db. a.File / Open…. b.Select clevis.db for the Database List. c.Click OK. The viewport (PATRAN’s graphics window) will appear. a b c

7. WS 4 - 7 Mar120 - Patran Day 1 Overview - Results Step 2. Analyze and Attach Results The clevis model and results are imported for this exercise. a.Analysis: Analyze / Entire Model / Full Run. b.Click Apply. Read in the Results to post process. c.Read Results / Result Entities / Attach. d.Click Select Results File…. e.Select clevis.t16 for Selected Results File. f.Click OK. g.Click Apply. b a d c g e f

8. WS 4 - 8 Mar120 - Patran Day 1 Overview - Results Step 3. Read Results First create a fringe plot of the von Mises stress in the clevis, first with the Results form. a.Result: Create / Quick Plot b.Select the last result case, Default Stagic Step, A1:Incr=17, Time=1.00000 for Select Result cases. c.Select Stress, Global System for Select Fringe Result. d.Select von Mises for quantity. e.Click Apply. e d c b a

9. WS 4 - 9 Mar120 - Patran Day 1 Overview - Results Step 4. Display Range Create and assign a new numerical range to the viewport. Use the name, my_range, and the values Start=22000 and End=100 to define the new range containing 15 subrange levels. a.Display / Ranges…. b.Click Create. c.Enter my_range as New Range Name. d.Click OK. e.Select Semi-Auto for Data Method. f.Enter 22000 as Start g.Enter 1000 as End. h.Click Calculate. i.Click Apply. j.Click Assign target Range to Viewport. k.Click Cancel. c d a e b i h g f e j k

10. WS 4 - 10 Mar120 - Patran Day 1 Overview - Results Step 5. Create Quick Plot Change the results label format to Integer. a.Result: Create / Quick Plot b.Click Fringe Attributes icon. c.Click Label Style…. d.Select Integer. e.Click OK. f.Click Apply. e d c b a f

11. WS 4 - 11 Mar120 - Patran Day 1 Overview - Results Step 6. Create Fringe Render an element fill plot of the von Mises Stresses. a.Results: Create / Fringe. b.Click Select Results icon. c.Select last result case, Default Stagic Step, A1:Incr=17, Time=1.00000 for Select Results Cases. d.Select Stress, Global System for Select Results Cases. e.Select von Mises for Quantity. f.Click Plot Options icon. g.Select None for Domain. h.Select Average for Extrapolation. i.Click Apply. i h g d c f b e a

12. WS 4 - 12 Mar120 - Patran Day 1 Overview - Results Step 6. Create Fringe (Cont.) Create a fringe plot of the maximum principal stress for elements 1 through 24 only. a.Create / Fringe b.Click Select Results icon. c.Select last result case, Default Stagic Step, A1:Incr=17, Time=1.00000 for Select Results Cases. d.Select Stress, Global System for Select Results Cases. e.Select Max Principal 2D for Quantity. f.Click Target Entities icon. g.Select Elements for Target Entity. h.Copy and Paste the following Element ids, Elm 125 126 127 128 129 130 131 132 133 134 135 136 385 386 387 388 389 390 391 392 393 394 395 396 i.Click Plot Options icon. j.Select All Entities for Domain. k.Select Shape Fn. for Extrapolation. l.Click Apply. l k j i g h a f d e c b

13. WS 4 - 13 Mar120 - Patran Day 1 Overview - Results Step 6. Create Fringe (Cont.)

14. WS 4 - 14 Mar120 - Patran Day 1 Overview - Results Convert the stress tensor results to the scalar, and create a fringe plot of the scalar with respect to the cylindrical coordinate system you created when building the clevis model. Plot the results on all elements. a. Select last result case, Default Stagic Step, A1:Incr=17, Time=1.00000 for Select Results Cases. b.Select Stress, Global System for Select Results Cases. c.Select X Component for Quantity. d.Click Target Entities icon. e.Select Elements for Target Entity. f.Select all visible elements for Select Elements. g.Click Plot Options icon. h.Select CID for Coordinate Transformation. i.Select Coord 1 for Select Coordinate Frame. j.Click Apply. Step 6. Create Fringe (Cont.) g f e a d c b h i j

15. WS 4 - 15 Mar120 - Patran Day 1 Overview - Results Step 6. Create Fringe (Cont.)

16. WS 4 - 16 Mar120 - Patran Day 1 Overview - Results Step 6. Create Fringe (Cont.) In the default viewport, create a von Mises stress plot. Create another viewport containing only FEM and plot the 1 st invariant with a customized range. a.Click Select Results icon. b.Select last result case, Default Stagic Step, A1:Incr=17, Time=1.00000 for Select Results Cases. c.Select Stress, Global System for Select Results Cases. d.Select von Mises. e.Click Apply. a b c e d

17. WS 4 - 17 Mar120 - Patran Day 1 Overview - Results Step 7. Create Viewport and Group Now, create a new viewport called view and create a new group call fem1, containing only FEM. a.Viewport / Create…. b.Enter view as New viewport Name. c.Click Apply. d.Click Cancel. e.Group / Create…. f.Enter fem1 as New Group Name. g.Check Make Current and Unpost All Other Groups. h.Select Add All FEM for Group Contents. i.Click Apply. j.Click Cancel. b d c j i h g f e a

18. WS 4 - 18 Mar120 - Patran Day 1 Overview - Results Step 8. Create a New Range Now, create a new range called range1, spanning from 20,000 to –20,000. a.Display / Ranges…. b.Click Create. c.Enter range1 as New Range Name. d.Click OK. e.Select Semi-Auto for Data Method. f.Enter 20000 for Start. g.Enter –20000 for End. h.Click Calculate. i.Click Apply. j.Click Assign Target Range to Viewport. k.Click Cancel twice. a d c k f e b j i h g

19. WS 4 - 19 Mar120 - Patran Day 1 Overview - Results Step 9. Create 1 st Invariant Plot with Custom Range Finally, create a plot of the 1 st invariant. a.Click Select Results icon. b.Select last result case, Default Stagic Step, A1:Incr=17, Time=1.00000 for Select Results Cases. c.Select Stress, Global System for Select Results Cases. d.Select 1 st Invariant. e.Click Apply. f.File / Quit e d c b a f

20. WS 4 - 20 Mar120 - Patran Day 1 Overview - Results Workshop 4 – Introduction to MSC.Patran