*MAT_077_H (HYPERELASTIC_RUBBER)
LS-DYNA Input Interface KeywordDefines an isotropic, hyperelastic, viscous, and incompressible material specified from uniaxial experimental data.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
---|---|---|---|---|---|---|---|
*MAT_077_H or *MAT_HYPERELASTIC_RUBBER | |||||||
mat_ID |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
---|---|---|---|---|---|---|---|
C10 | C01 | C11 | C20 | C02 | C30 |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
---|---|---|---|---|---|---|---|
SGL | SW | ST | Fct_ID |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
---|---|---|---|---|---|---|---|
Gi | i |
Definition
Field | Contents | SI Unit Example |
---|---|---|
mat_title | Material
identifier. (Integer) |
|
Initial
density. (Real) |
||
Poisson’s ratio. Default = 0.495 (Real) |
||
C10, C01, C11, C20, C02, C30 | Shear hyperelastic modulus
parameter. (Real) |
|
SGL | Specimen gauge length. | |
SW | Specimen width length. | |
ST | Specimen thickness. | |
Fct_ID | Force versus gauge length function identifier.
(Integer) |
|
Gi | Shear modulus for relaxation. | |
i | Decay constant for relaxation. |
Comments
- This keyword maps to /MAT/LAW59 (CONNECT) (if N = 0) or /MAT/LAW69 (if N > 0) and /VISC/PRONY in case when Prony coefficients are available.
- 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.