Providing test data to define a hyperelastic foam material model

From the menu bar in the Edit Material dialog box, select MechanicalElasticityHyperfoam.

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

Toggle on Use test data (Suboptions must be specified).

Click the arrows to the right of the Strain energy potential order field to increase or decrease the order of the strain energy potential, N.

Indicate how you want to define Poisson effects:

• Toggle on Use constant Poisson's ratio if you want to enter a Poisson's ratio that will remain constant throughout the calculations.

• Toggle off Use constant Poisson's ratio if you want Poisson effects defined from volumentric test data and/or lateral strains in other test data.

If you are defining the hyperfoam behavior of a viscoelastic material, click the arrow to the right of the Moduli time scale (for viscoelasticity) field to specify either long-term or instantaneous elastic response.

Use the Test Data menu to specify the experimental data from which Abaqus can calculate material parameters. For detailed instructions, see the following sections:

• Specifying uniaxial test data for a hyperelastic foam material model”

• Specifying biaxial test data for a hyperelastic foam material model”

• Specifying simple shear test data for a hyperelastic foam material model”

• Specifying planar test data for a hyperelastic foam material model”

• Specifying volumetric test data for a hyperelastic foam material model”

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).