Clamped Neo-Hookean Material

Constitutive Law

This MPM Material is an isotropic, elastic-plastic material in large strains using a hyperelastic formulation. The elastic part is a neo-Hookean material. Plasticity occurs when the elongation in either tension of compression reaches a critical value. This material is based on similar material using in a paper to animate snow mechanics.

Material Properties

The material properties are given in the following table.

Property	Description	Units	Default
CritComp	Critical compression extension	none	0.025
CritComp	Critical tensile extension	none	0.0075
Hardening	Hardening coefficient	none	10
(other)	Properties to define underlying Neo-Hookean material	varies	varies