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


(1) (2) (3) (4) (5) (6) (7) (8)
mat_ID ρ i G  


Field Contents SI Unit Example
mat_ID Material identifier


ρ i Initial density


[ kg m 3 ]
G Shear Modulus


[ Pa ]


  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.