The crush stress can be thought of as the stress of the crushing body at the crushing
interface. The crush stress is specified as a material property but does not directly
influence the constitutive calculations associated with element integration points;
rather, the crush stress limits the contact pressure magnitude at an actively crushing
interface. See CZone Analysis for more information.
Context:
In the crush stress model, the composite material can be a constant or can vary as a
function of the angle, between the local x-direction of the
crushable element and the contact normal direction projected to the plane of the
element.
From the menu bar in the Edit Material dialog box, select MechanicalCrush Stress.
Toggle on Use temperature-dependent data to define data
that depend on temperature.
A column labeled Temp appears in the
Data table.
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.
Enter the following data in the Data table:
Crush Stress
Crush stress.
Material angle (degrees)
Material angle in degrees.
Temp
Temperature.
Field n
Predefined field variables.
You can 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 Velocity Factor from the
Suboptions menu to define how the approach velocity at
a crushing interface influences a material's resistance to crushing (see Defining crush stress velocity factor for details).
Click OK to create the material and 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).