WS7-1 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation WORKSHOP 7 CORD1X SUPPORT

WS7-2 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation

WS7-3 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Problem Description u Create a coordinate system referencing specific nodes of the model, and then verify that a CORD1R card is written to the.bdf file.

WS7-4 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Suggested Exercise Steps 1. Start MSC.Patran and create a new database block.db. 2. Create a 1x1x1 solid. 3. Mesh the solid using Hex elements. 4. Create a coordinate system that references specific nodes of the mesh. 5. Create a boundary condition in the new coordinate system. 6. Create material properties. 7. Create element properties. 8. Create a.bdf file. 9. Inspect the.bdf file and note the lack of node references for the coordinate system. 10. Modify the translation parameters in Patran and create another.bdf file. 11. Inspect the.bdf file and note the use of CORD1 entries.

WS7-5 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 1. Create a Database Create a new database. a.File / New. b.Enter block as the file name. c.Click OK. d.Choose Default Tolerance. e.Select MSC.Nastran as the Analysis Code. f.Select Structural as the Analysis Type. g.Click OK. a b e f d c g

WS7-6 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 2. Create Solid Block a.Geometry: Create / Solid / XYZ. b.Click on Vector Coordinates List and enter. c.Apply. a b c

WS7-7 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 3. Mesh with Hex Elements a.Elements: Create / Mesh / Solid. b.Select Hex Element Shape. c.Select the solid. d.Click Apply. b c d a

WS7-8 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 4. Create Coordinate System Create a rectangular coordinate system. a.Geometry: Create / Coord / 3 Point. b.Select the Node picking filter. c.Click in the Origin list box and select the node at the top right corner, as shown. d.Select the corner node below the previous node, as shown. e.Select The opposite corner node as shown. f.Note the orientation of the new coordinate system. a b c d e f

WS7-9 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 5. Create Boundary Condition Create a boundary condition in the new coordinate system. a.Loads/BCs: Create / Displacement / Nodal. b.Enter a New Set Name. c.Click Input Data… d.Enter for Translations. e.Select Coord 1 as the Reference coordinate frame. f.Click OK. g.Click Select Application Region… h.Select the solid. i.Click Add. j.Click OK. k.Click Apply. a b c d e f g h i j k

WS7-10 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 6. Create Material Properties Create material properties. a.Materials: Create / Isotropic / Manual Input. b.Enter Steel as the Material Name. c.Click Input Properties… d.Enter 30e6 for the Elastic Modulus. e.Enter 0.3 for the Poisson Ratio. f.Click OK. g.Click Apply. a b c d e f g

WS7-11 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 7. Create Element Properties Create element properties. a.Properties: Create / 3D / Soid. b.Enter a Property Set Name. c.Click Input Properties… d.Select steel as the material. e.Click OK. f.Select the solid as the Application Region. g.Click Add. h.Click Apply. a b c d e h f g

WS7-12 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 8. Create a.bdf File Create a.bdf file. a.Analysis: Analyze / Entire Model / Analysis Deck. b.Click Apply. c.Click Yes, and Apply again when warned about changing the analysis coordinate system of some elements. a b c

WS7-13 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 9. Review the.bdf File Open the file block.bdf with any text editor. Note the lace of node references in the Cord entry (since it is a CORD2R)

WS7-14 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 10. Modify the Translation Parameters Create a.bdf file. a.Analysis: Analyze / Entire Model / Analysis Deck. b.Click Translation Paramenters… c.Change the Coord Frame Coordinates option to reference nodes. d.Click OK. e.Click Apply. a e c d b

WS7-15 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation Step 11. Review the.bdf File Open the new block.bdf with a text editor. Note the use of nodes in the CORD1R entry

WS7-16 PAT328, Workshop 7, May 2005 Copyright 2005 MSC.Software Corporation