*MAT_007 (BLATZ_KO_RUBBER)

LS-DYNA Input Interface KeywordThis keyword defines an isotropic, incompressible, Neo-Hookean hyperelastic material.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
*MAT_007 or *MAT_BLATZ-KO_RUBBER
mat_ID	${\rho }_i$	G

Definition

Field	Contents	SI Unit Example
mat_ID	Material identifier (Integer)
${\rho }_i$	Initial density (Real)	$\left[\frac{\text{kg}}{{\text{m}}^{\text{3}}}\right]$
G	Shear Modulus (Real)	$\left[\text{Pa}\right]$

Comments

1. This keyword maps to a New-Hookean incompressible material /MAT/LAW42 with Poisson's ratio = 0.463.
2. 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.