You use the Edit
Material dialog box to specify material damage initiation criteria
and associated damage evolution.
Once an initiation criterion is met,
Abaqus
applies the associated damage evolution law to determine the material
degradation. You can specify the following types of damage in
Abaqus/CAE:
Ductile
FLD
FLSD
Johnson-Cook
Maxe or Quade
Maxs or Quads
Maxps or Maxpe
M-K
MSFLD
Shear
Hashin
Mullins Effect
You can define multiple damage initiation criteria and damage evolution
models to accurately represent the behavior of a material. When a damage
initiation criterion is met, material damage has begun.
Abaqus
uses the damage evolution definition associated with the initiation criterion
to evaluate the extent of the damage. If you do not define damage evolution,
Abaqus
continues to evaluate the damage initiation criterion to provide an indication
of the extent to which the analysis has exceeded the initiation point.
In addition to damage initiation and evolution,
Abaqus/Standard
uses a viscous regularization scheme to improve convergence as fiber-reinforced
composite materials (Hashin damage model) are damaged.