Specifying an inelastic heat fraction

You can specify an inelastic heat fraction to provide for inelastic energy dissipation as a heat source in an adiabatic or fully coupled thermal-stress analysis.


Inelastic heat fractions are typically used in the simulation of high-speed manufacturing processes involving large amounts of inelastic strain, where the heating of the material caused by its deformation significantly influences temperature-dependent material properties. The generated heat is treated as a volumetric heat flux source term in the heat balance equation.

See the following sections for more information:

  1. From the menu bar in the Edit Material dialog box, select ThermalInelastic Heat Fraction.

    (For information on displaying the Edit Material dialog box, see Creating or editing a material.)

  2. In the Fraction field, enter the fraction of inelastic dissipation rate that appears as a heat flux per unit volume. The fraction may include a unit conversion factor if required. The default value is 0.9.

  3. Click OK 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).