*MAT_057 (LOW_DENSITY_FOAM)
LS-DYNA Input Interface KeywordDefines an isotropic, visco-elastic, low density foam.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
|---|---|---|---|---|---|---|---|
| *MAT_057 or *MAT_LOW_DENSITY_FOAM | |||||||
| mat_ID | E | LCID | HU | ||||
| SHAPE | |||||||
Definition
| Field | Contents | SI Unit Example |
|---|---|---|
| mat_ID | Material identifier (Integer) |
|
| Initial density (Real) |
||
| E | Young’s modulus (Real) |
|
| LCID | Curve identifier which defines engineering stress as function
of engineering strain. In compression, the stress and strain are
positive. In tension the stress and strain are negative.
(Integer) |
|
| HU | Hysteresis unloading factor Default = 1.0 (Real) |
|
| SHAPE | Shape unloading factor Default = 1.0 (Real) |
Comments
- This keyword maps to /MAT/LAW90.
- The option “_TITLE” can be added to the end of this keyword. When “_TITLE” is included, an extra 80 character long line is added after the keyword input line which allows an entity title to be defined.