St. Venant-Kirchhoff constitutive law in Abaqus

Mike Graham's picture

I would like to conduct simulations in Abaqus using a St.
Venant-Kirchhoff constitutive law, but when I try to define a material
in Abaqus CAE I do not see it as an option.


Is this available as a
built-in model?

 Is this just another material model with a parameter set to a specific value? (Hyperelasticity isn't my strongest area.)

Mike Graham's picture

User subroutine

There is an example UANISOHYPER_STRAIN user subroutine in the Abaqus Subroutine Reference Manual, so I just ended up using that.