Defining anisotropic yield and creep

Abaqus provides an anisotropic yield and creep model for materials that exhibit different yield or creep behavior in different directions. You can define anisotropic yield or creep by specifying stress ratios that are applied in Hill's potential function. For more information, see Hill Anisotropic Yield/Creep.

  1. Create a material model as described in one of the following sections

  2. From the Suboptions menu in the Edit Material dialog box, select Potential.

    A Suboption Editor appears.

  3. Toggle on Use temperature-dependent data to define data that depend on temperature.

    A column labeled Temp appears in the Data table.

  4. Click the arrows to the right of the Number of field variables field to increase or decrease the number of field variables on which the data depend.
  5. Enter the following data in the Data table:

    R11, R22, R33, R12, R13, and R23

    Yield or creep stress ratios.

    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.

  6. Click OK to return to the Edit Material dialog box.