Shear damage

From the menu bar in the Edit Material dialog box, select Mechanical Damage for Ductile Metals Shear Damage .

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

Enter the material parameter,

k_{s}

.

Enter the material parameter, Accumulation power, equal to the value of the power coefficient, N.

To define material damage data that depend on temperature, toggle on Use temperature-dependent data.

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.

Field variable columns appear in the Data table.

Enter the damage parameters in the Data table:

Fracture Strain: Equivalent fracture strain at damage initiation.
Shear Stress Ratio: The shear stress ratio is defined as $θ_{s} = (q + k_{s} p) / τ_{\max}$ , where q is the Mises equivalent stress, p is the pressure stress, and $τ_{\max}$ is the maximum shear stress.
Strain Rate: The equivalent plastic strain rate, ${\dot{\bar{ε}}}^{p l}$ .
Temp: Temperature, $θ$ .
Field n: Predefined field variables.

You might 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.

Select Suboptions Damage Evolution to define the material degradation that takes place once damage begins.

For more information, see Damage evolution.”

Click OK to exit the material editor.