compressible Gent¶
Module: solid
Category: material
Type string: "compressible Gent"
Parameters¶
| Name | Description | Default | Units |
|---|---|---|---|
density |
density | 1 | [M/L^3] |
G |
G | 0 | [P] |
K |
K | 0 | [P] |
Jm |
Jm | 0 | [] |
Description¶
The compressible Gent material is defined using the compressible Gent type string.
The strain energy of this material is defined as follows,
\[
\Psi_{r}=-\frac{\mu J_{m}}{2}\ln\left(1-\frac{I_{1}-3}{J_{m}}\right)+\frac{\kappa}{2}\left(\frac{J^{2}-1}{2}-\ln J\right)^{4}
\]
Here, \(\mu\) is the shear modulus.
Example:
<material id="2" type="compressible Gent">
<G>3.14</G>
<Jm>1.5</Jm>
<k>1e5</k>
</material>