Defining creep parameters for a cap plasticity model

The cap creep model has two possible mechanisms that are active in different loading regions: one is a cohesion mechanism, which follows the type of plasticity active in the shear-failure plasticity region, and the other is a consolidation mechanism, which follows the type of plasticity active in the cap plasticity region.

For more information, see Creep Formulation.

  1. Create a material model as described in Specifying cap plasticity behavior.
  2. From the Suboptions menu in the Edit Material dialog box, select either Cap Creep Cohesion or Cap Creep Consolidation. (See Creep Formulation for detailed information on the two creep mechanisms.)

    A Suboption Editor appears.

  3. Click the arrow to the right of the Law field, and select the creep law of your choice. See Specifying Creep Laws for the data required for each creep law.
  4. To define behavior data that depend on temperature, toggle on Use temperature-dependent data.

    A column labeled Temp appears in the Data table.

  5. 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.

    Field variable columns appear in the Data table.

  6. If you selected the Time, SinghM, or Time Power creep law, specify whether to use the total time or the creep time. See Time-Dependent Behavior for more information.
  7. Click OK to return to the Edit Material dialog box.