UEXPAN

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/Standard

Elements tested

CPE4

Features tested

User subroutine to define increments of thermal strains.

Problem description

User subroutine UEXPAN is used to model the thermal expansion behavior of a linear elastic material. The thermal expansion behavior is modeled as isotropic in uexpan1x.inp, and it is modeled as orthotropic in uexpan2x.inp. The thermal expansion behavior is modeled as a function of field variables in uexpanfv.inp.

In all the tests a single CPE4 element with unit dimensions is used in the finite element model. The material properties in these tests are E = 30.0E6 and $ν$ = 0.3.

Results and discussion

The results match the exact solutions.

Input files

uexpan1x.inp: Isotropic thermal expansion behavior.
uexpan1x.f: User subroutine UEXPAN used in uexpan1x.inp.
uexpan2x.inp: Orthotropic thermal expansion behavior.
uexpan2x.f: User subroutine UEXPAN used in uexpan2x.inp.
uexpanfv.inp: Thermal expansion behavior is a function of field variables.
uexpanfv.f: User subroutine UEXPAN used in uexpanfv.inp.