Defining void nucleation in a porous material

You use the Suboption Editor to define the nucleation of voids in a porous metal plasticity model. See Void Growth and Nucleation for more information.

  1. Create a material model as described in Defining a porous metal plasticity model.
  2. From the Suboptions menu in the Edit Material dialog box, select Void Nucleation.

    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:

    Mean

    Mean value of the nucleation-strain normal distribution, εN.

    Standard Deviation

    Standard deviation of the nucleation-strain normal distribution, sN.

    Volume Fraction

    Volume fraction of nucleating voids, fN.

    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.