User-defined mechanical material behavior

 User-defined mechanical material behavior in Abaqus: is provided by means of an interface whereby any mechanical constitutive model can be added to the library; requires that a constitutive model (or a library of models) is programmed in user subroutine UMAT (Abaqus/Standard) or VUMAT (Abaqus/Explicit); and requires considerable effort and expertise: the feature is very general and powerful, but its use is not a routine exercise. The following topics are discussed:
 Related Topics In Other Guides UMAT VUMAT *USER MATERIAL *DEPVAR Specifying solution-dependent state variables Defining constants for a user material

ProductsAbaqus/StandardAbaqus/ExplicitAbaqus/CAE