From the menu bar in the Edit Material dialog box, select .
(For information on displaying the Edit Material dialog box, see Creating or editing a material.)
Click the arrow to the right of the Hardening field, and select Isotropic.
Toggle on Use strain-rate-dependent data if you want enter test data showing yield stress values versus equivalent plastic strain at different equivalent plastic strain rates.
A Rate column appears in the Data table.
Alternatively, if you want to define strain rate dependence using yield stress ratios, you must select from the menu. See Defining rate-dependent yield with yield stress ratios” for details. For background information on rate dependence, see Rate-dependent yield.
Toggle on Use temperature-dependent data to define behavior data that depend on temperature.
A column labeled Temp appears in the Data table.
To define behavior data that depend on field variables, click the arrows to the right of the Number of field variables field to increase or decrease the number of field variables.
Enter the following data in the Data table:
- Yield Stress
The stress at which yield is initiated.
- Plastic Strain
Plastic strain.
- Rate
Equivalent plastic strain rate, , for which the stress-strain curve applies.
- Temp
Temperature.
- Field n
Predefined field variables.
You may need to expand the dialog box to see all the columns in the Data table. For detailed information on how to enter data, see Entering tabular data.
If desired, use the menu to enter additional data. See the following sections for details:
Click OK to create the material and to close the Edit Material dialog box. Alternatively, you can select another material behavior to define from the menus in the Edit Material dialog box (see Browsing and modifying material behaviors, for more information).