Spall: "spall"

Input

model_type
model_data (see below)
material_data
After the data for one of the models, material data is defined (starting at the top level again) to allow an equation of state etc to be specified.

Specific models

State

The local material state for this model comprises: 
material_state	(for the material type associated with the spall model)
void_fraction	(real)
damage		(real)