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Material models for polymers

The material models most likely to be applicable to polymers and which
include treatment of damage and/or failure are:
*MAT_081 (*MAT_PLASTICITY_WITH_DAMAGE)
*MAT_089 (*MAT_PLASTICITY_POLYMER)
*MAT_101 (*MAT_GEPLASTIC_SRATE_2000A)
*MAT_112 (*MAT_FINITE_ELASTIC_STRAIN_PLASTICITY)
*MAT_141 (*MAT_RATE_SENSITIVE_POLYMER)

For hot plastic, see
*MAT_60 (*MAT_ELASTIC_WITH_VISCOSITY)
*MAT_106 (*MAT_ELASTIC_VISCOPLASTIC_THERMAL)

Available since version 971:
*MAT_168 (*MAT_POLYMER)
*MAT_187 (*MAT_SAMP-1)