Several materials and models for each material are supported as shown in the table below.
Figure 8.76: Material type
| Material | Model | Description |
| Formulation and Parameters for a Linear Material |
ISOTROPIC ORTHOTROPIC | This material represents a substance that undergoes linearly elastic deformation under load. Most metals are common examples of this kind of material, for which the stress-strain relationship can be defined as linearly elastic and isotropic. In addition, some materials such as composite can be defined as orthotropic. Orthotropic materials support only shell and solid elements. Thermal properties are available for linear isotropic material. |
| Formulation and Parameters for a Hyper Elastic Material | NEO-HOOKEAN, ARRUDA-BOYCE, OGDEN, MOONEY-RIVLIN | This material represents a substance that undergoes non-linearly elastic deformation with incompressibility under load. Rubber is the common example of this kind material, for which the stress-strain relationship can be defined as non-linearly elastic, isotropic, incompressible and generally independent of strain rate. |
| Formulation and Parameters for a Plasticity Material | BILINEAR, MULTILINEAR | This material represents a substance that undergoes permanent deformation under load. In the elastic range, the formulation of the material is exactly same as for the linear material. |
| Formulation and Parameters for a Foam Material | LOW DENSITY FOAM | This material represents a substance formed by trapping pockets of gas in a solid. A sponge and Styrofoam are the most common examples of foams. The foam generally has a large volume of gas and thin films of solid separating the regions of gas. |