static InputParameters validParams()
ComputeNeoHookeanStress(const InputParameters ¶meters)
Native interface for providing the 2nd Piola Kirchhoff stress.
virtual void computeQpPK2Stress()
Actual stress/Jacobian update.
Compressible Neo-Hookean hyperelasticity.
const MaterialProperty< Real > & _lambda
const InputParameters & parameters() const
const MaterialProperty< Real > & _mu