*MAT_006 (VISCOELASTIC)
LS-DYNA Input Interface KeywordThis keyword defines an isotropic, visco-elastic material. It is generally used to model incompressible rubbers, polymers, foams, and elastomers.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
---|---|---|---|---|---|---|---|
*MAT_006 or *MAT_VISCOELASTIC | |||||||
mat_ID | K | G0 | G_INF | BETA |
Definition
Field | Contents | SI Unit Example |
---|---|---|
mat_ID | Material identifier. (Integer) |
|
Initial density. (Real) |
||
K | Bulk coefficient. (Real) |
|
G0 | Short time shear modulus. (Real) |
|
G_INF | Long time shear modulus. (Real) |
|
BETA | Decay coefficient. (Real) |
Comments
- This keyword maps to /MAT/LAW34 (BOLTZMAN). It is compatible with truss, beam shell and solid elements.
- Parameters K, G0, and G_INF are required.
- Input of material parameters as a function of temperature is not supported.
- The option “_TITLE” can be added to the end of this keyword. When “_TITLE” is included, an extra 80 characters long line is added after the keyword input line which allows an entity title to be defined.