Defining Stress-Strain Curves

Stress-strain curves are available with the following material models: Nonlinear Elastic, Plasticity - von Mises, and Plasticity - Tresca.

1. In the Material dialog box, right-click Custom Materials and select New Category. If needed, rename the New Category folder.
2. Right-click the newly defined category and select New Material.
3. On the Properties tab, do the following:
   1. Set Model Type to either Nonlinear Elastic, Plasticity - von Mises, or Plasticity - Tresca.
   2. Select the desired Units.
   3. Click Create Stress-Strain Curve.

      The Tables & Curves tab is active and Stress-Strain Curve is selected in Type.

4. In Table data, do the following:
   1. Select the desired stress in Units.
   2. Enter the strain and stress data pairs in the table. For large strain formulation, enter the logarithmic strain data.
   3. To open a new row, double-click any cell in the Points column.
   4. Click File to read data from a *.dat text file with two columns of data.
   5. Click View to view the curve.
5. To save the material to a material library, click Save.
6. Click Apply.
7. Click Close.