VUHARD

This problem contains basic test cases for one or more Abaqus elements and features.

The following topics are discussed:

Elements tested
Features tested
Problem description
Results and discussion
Input files

ProductsAbaqus/Explicit

Elements tested

C3D8R

Features tested

User subroutine to define hardening for the following plasticity models: Mises plasticity, Hill plasticity, combined hardening, and porous metal plasticity.

Problem description

This test verifies that the user-defined yield stress and its derivatives in user subroutine VUHARD are transferred properly to the solution process. The finite element model consists of multiple disconnected cubes made of a single C3D8R element. Each element is associated with one of the plasticity models listed above, and in each case a user-defined hardening is implemented. For comparison purposes, a duplicate set of elements with equivalent plasticity and isotropic hardening definitions is included to provide a reference solution.

Results and discussion

In each case the results in the testing element match the solution in the reference element.

Input files

iso_harden_vuhard.inp: Plasticity model.
iso_harden_vuhard.f: User subroutine VUHARD used in iso_harden_vuhard.inp.