*MAT_092 (SOFT_TISSUE_VISCO)
LS-DYNA Input Interface KeywordThis material is used to represent biological soft tissues such as ligaments based on Mooney-Rivlin formulation.
Visco-elasticity is modeled using Prony series.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
---|---|---|---|---|---|---|---|
*MAT_092 or *MAT_SOFT_TISSUE_VISCO | |||||||
mat_ID | mu_1 | mu_2 | |||||
G1 | G2 | G3 | G4 | G5 | G6 | ||
tau_1 | tau_2 | tau_3 | tau_4 | tau_5 | tau_6 |
Definition
Field | Contents | SI Unit Example |
---|---|---|
mat_ID | Material
identifier. (Integer) |
|
Initial
density. (Real) |
||
mu_1 - mu_2 | Mooney-Rivlin
coefficient. (Real) |
|
G1 - G6 | Prony viscous
terms. (Real) |
|
tau_1 - tau_6 | Relaxation time corresponding to each Prony term Gi. |
Comments
- This keyword maps to /MAT/LAW42 (OGDEN).
- 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.