Neo-Hookean

The Neo-Hookean material model is described in terms of the strain energy potential, W, as follows:

where and are material constants.

You can use materials constants to calculate the initial shear modulus as follows:

You can also calculate initial bulk modulus for the material as follows:

When you select Neo-Hookean material model to define the hyperelastic material, you must specify values for and .

For materials that are nearly incompressible, Creo Simulate uses incompressibility conditions. If the specified value of is less than, Creo Simulate uses following value of during analysis:

=.

where G is the initial shear modulus.

Creo Simulate calculates these constants when you select Neo-Hookean material model on the Hyperelastic Material Definition dialog box.

Return to About Material Models.