Isotropic Phase Field Softening Material

Constitutive Law

This material is underdevelopment and only available in OSParticulas. More details will follow when done.

Material Properties

The isotropic variational mechanics model using a single energy release rate that scales evolution of damage. The critical energy release rate is enter using the base material JIc property. The other needed material properties are as follows:

Property	Description	Units	Default
(Isotropic Properties)	Enter all properties needed to define the underlying isotropic material response	varies	varies
ell	Length scale parameter used in variational fracture mechanics	none	none
viscosity	Viscosity to use when solving coupled phase field evolution in a diffusion tasks	none	none
gd	Softening law with options 0 = quadratic, 1 = exponential, 2 = linear softening	none	0
stability	A stability factor thought to help post-failure analysis	none	0
garg	An optional argument for use within the softening law. If not provided, default values depend on gd and are 1, 3, and 4, for gd = 0, 1, or 2, respectively	none	varies
partition	Choose the methods used to partition energy into energy that cause fracture and energy that does not cause fracture. The options are 0 = using eigenstrain analysis and 1 = divide into pressure and deviatoric strains	none	1
(other)	Properties common to all materials	varies	varies