Reduced Polynomial Form of Order 2
The equation of strain energy potential, W in Reduced Polynomial form of order 2 is as follows:
where
,
,
,
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 Reduced Polynomial form of order 2 material model
to define the hyperelastic material, you must specify values for
,
,
,
.
For materials that are nearly incompressible,
Creo Simulate uses incompressibility conditions. If the specified values of
and
is less than
,
Creo Simulate uses following values of
and
during the analysis:
=
.
=
where G is the initial shear modulus.
Creo Simulate calculates these constants when you select Reduced Polynomial form of order 2 material model on the
Hyperelastic Material Definition dialog box.