User subroutine to define characteristic element length at a material point.

User subroutine VUCHARLENGTH:

  • is called at all material points of elements for which the material definition includes a user-defined characteristic element length and the constitutive model requires a characteristic length;

  • allows the definition of characteristic element length at a material point as a function of element topology, nodal and material point coordinates, and material orientation;

  • can use field variables that are passed in; and

  • can use solution-dependent state variables that are passed in.

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