Tutorial A1: Define the Properties and Mesh

Define the Material Properties

Create a new material by loading steel from the material library.

1. In the Model tree, right-click on Materials and choose New.
2. In the dialog, click on Select Material. The Material DB dialog will become populated with the available libraries. Click on Load Database.
3. Browse to C:\Program Files\Autodesk\Inventor Nastran 2024\In-CAD\Materials, and open the ADSK_materials.nasmat file.
4. The material tree is populated with the available materials. Under the Titanium Alloys category, select Ti-5Al-2.5 Sn Wrough Cast. Ignore any warning about Failure Theory.

   

5. Click on New button. The Titanium Alloy is added to Materials in the Model tree.
6. Click Select Material, re-open the material library file, click on Sheet Alloys category, and then select Sheet Cb+Ti.

   

7. Click the Nonlinear button.
8. Select Elasto-Plastic (Bi-Linear) radio button.

   

9. Accept all the defaults and click OK buttons to create the material.

Define the Element Properties

1. In the Model tree, under Idealizations, check for any existing definitions under the standard categories, such as Solids and Shells. Solid 1, shown below, is an example of an existing definition:
   

   If there are any existing definitions, right-click Idealizations > Delete All. Doing this ensures that you won't have unwanted materials appearing in the part mesh and participating in the analysis.

2. In the Model tree, right-click on Idealizations and choose New.
3. Change the Name to Punch and Die Property.
4. Select Solid Elements from the Type drop-down.
5. Check Associated Geometry and in the drawing window, select the two curved parts, the forming die and forming punch.
6. Make sure Ti-5Al-2.5 Sn Wrought Cast is selected from the Material drop-down.

   

7. Click the New button.
8. Name the second property Sheet Slab Property.
9. Select Solid Elements from the Type drop-down.
10. Check Associated Geometry and in the drawing window, select the forming slab.
11. Make sure Sheet Cb+Ti is selected from the Material drop-down.

    

12. Click OK to create the physical property.

Define the Mesh

1. Right-click on Mesh Model and select Edit.
2. Enter the Element Size as 0.25 (m).
3. Change the Element Order to Linear.
4. Uncheck Continuous Meshing, as the mesh is solid mesh.

   

   

5. Click OK to mesh the geometry.
6. Notice that the mesh is coarse. To have the proper contact elements between the punch and die with the sheet, you have to create mesh control on edges.
7. Right-click Mesh Model and select Add Mesh Control.
8. In the Mesh Control dialog box, click in the Selected Edges selection box to shift the focus from vertex data, and then select the curved edges on both sides of the punch and die, as shown in the image below.

   

9. Under Edge Data, enter 20 for Number of Elements.
10. Click on New button.
11. Select the sheet slab's four side edges as shown in the image below.

    

12. Enter 50 for Number of Elements.
13. Click OK.
14. Right-click Mesh Model and select Generate Mesh.