WS5-1 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation WORKSHOP 5 ARBITRARY BEAM SECTION. - презентация

1 WS5-1 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation WORKSHOP 5 ARBITRARY BEAM SECTION

2 WS5-2 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation

3 WS5-3 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Problem Description u Model a cantilever beam with the section shown below. The beam is 20 in. long and supports a load of 500 lb. [-.1,0] [.1,0] [.5,.6] [.1,.5] [-.1,3] [.5,.5] [.1,.6] [.1,2.5] [.1,2.4] [.1,3] [.5,2.4] [.5,2.5] [-.1,2.5] [-.1,2.4] [-.5,2.4] [-.5,2.5] [-.5,.6] [-.1,.5] [-.5,.5] [-.1,.6]

4 WS5-4 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Suggested Exercise Steps 1. Start MSC.Patran and create a new database beam.db. 2. Draw a curve modeling the beam. 3. Mesh the curve using CBAR elements. 4. Create boundary conditions. 5. Apply a load at the end of the beam. 6. Create an steel material with Elastic Modulus of 29e6 and Poisson ratio of Create the beam properties, with the given cross section. 8. Perform the analysis. 9. Review the.bdf file. 10. Review the.f06 file. 11. Access the analysis results. 12. Plot the results

5 WS5-5 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 1. Create a Database Create a new database. a.File / New. b.Enter beam 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

6 WS5-6 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 2. Create geometry for beam a.Geometry: Create / Curve / XYZ. b.Click on Vector Coordinates List and enter. c.Apply. a b c

7 WS5-7 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 3. Mesh with Bar2 Elements a.Elements: Create / Mesh / Curve. b.Select Bar2 Topology. c.Click on Curve List and select the curve. d.Apply. b c d a

8 WS5-8 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 4. Create Boundary Condition Create a boundary condition on the left end of the curve as shown.

9 WS5-9 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 5. Create a force Apply a force of 500 lbs to the right end of the curve.

10 WS5-10 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 6. Define the Material Create a material called Steel with the following properties: Elastic Modulus = 29E6 Poisson Ratio = 0.3 Density = 0.3

11 WS5-11 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 7. Define Element Properties Create a 1D beam with the desired cross section. a.Propertiess: Create / 1D / Beam. b.Enter a Property Set Name. c.Click on Input Properties. d.Click on the beam Library Icon. a b c d

12 WS5-12 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 7. Define Element Properties Create the desired cross section. a.Set the Object to Arbitrary Shape. b.Set the Method to Boundary Loops. c.Enter a Section Name. d.Input the X and Y coordinates of the points that define the section. e.Click Calculate/Display. a b c d e

13 WS5-13 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 7. Define Element Properties The cross section should appear as shown. Make note of the calculated properties, as we will compare to them later. a b c d

14 WS5-14 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 7. Define Element Properties Create the desired cross section. a.Click OK in the Beam Library form. b.Select Dimensions for the Value Type of the Section Name. c.Select the Steel Material. d.Enter for the beam orientation. e.Click OK. a b c d e

15 WS5-15 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 7. Define Element Properties Apply the properties to the beam. a.Click in the Select Members list box. b.Select the curve. c.Click Add. d.Click Apply. a b c d

16 WS5-16 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 8. Set up and run Analysis Perform the analysis a.Analysis: Analyze / Entire Model / Full Run. b.Select Solution Type… c.Select Solution Parameters… d.Select Sorted for Data Deck Echo. e.Click OK. f.Click OK. g.Click Apply. a b c d g e f

17 WS5-17 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 9. Review the.bdf file Review the entries created in the.bdf file a.Open the file beam.bdf with any text editor. b.Note the SET3 entry which refers to the points of the section. c.Note the PBRSECT entry, which was automatically generated in Patran. d.The points referenced in the SET3 entry are listed at the end of the file. a b c d

18 WS5-18 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 10. Review the.f06 file Review the information message in the.f06 file a.Open the file beam.f06 with any text editor. b.Compare the equivalent PBAR properties to those calculated in Patran for the beam section. b Area I1 I2 J a

19 WS5-19 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 11. Access Analysis Results Access the results: a.Analysis / Access Results / Attach XDB… b.Select Results File… c.Select beam.xdb d.OK. e.Apply a b c d e f

20 WS5-20 PAT328, Workshop 5, May 2005 Copyright 2005 MSC.Software Corporation Step 12. Display Analysis Results Display the results: a.Results / Create / Quick Plot b.Select the result case. c.Select Bar Stresses, Maximum Combined as the Fringe Result. d.Select Displacements, Translational as the Deformation Result. e.Apply a b c d e