Product: Abaqus/Standard
Warning: User subroutine UELMAT provides the user with a very general option to interface with the code. With any use of this subroutine interface, extensive verification should be done to make sure that the results are correct.
The finite element model for each test case consists of a single 4-node user element subjected to uniaxial deformation. The element corresponds to Abaqus element CPE4. Different Abaqus materials are accessed from user subroutine UELMAT in each test.
The results agree with the results obtained using an identical model with Abaqus element CPE4 instead of the user element.
Linearly elastic material.
Modified Drucker-Prager/Cap plasticity model.
Material with creep behavior.
Drucker-Prager plasticity model.
Crushable foam plasticity model.
Neo-Hookean hyperelastic model.
Hyperelastic foam.
Nonlinear kinematic hardening model.
Porous metal plasticity model.
User subroutine UELMAT used with all the input files.
The finite element model for each test case consists of a single 4-node user element. The element corresponds to the Abaqus element DC2D4. The boundary conditions consist of applying heat fluxes to two of the element nodes and applying constant temperatures to the remaining nodes. Steady-state and transient analyses are tested.
The results agree with the results obtained using an identical model with the Abaqus element DC2D4 instead of the user element.
Steady-state heat transient analysis.
Transient heat transient analysis.
User subroutine UELMAT used with uelmat_ht_2d_ss.inp and uelmat_ht_2d_trans.inp.