This set of tests verifies that temperature and field variable values are properly transferred to a structure when the values are set using user subroutines. These tests are modifications of the tests described in “*TEMPERATURE, *FIELD, and *PRESSURE STRESS,” Section 5.1.24. For the most part, wherever results files were used in those tests, they have been replaced here with user subroutines. The structure being analyzed is a cantilevered truss made up of 10 T3D2 elements.

The tests are as follows:

(The problem that is analogous to test xtfvtrs3.inp in “*TEMPERATURE, *FIELD, and *PRESSURE STRESS,” Section 5.1.24, is omitted, since this analysis would not test any features that were not already covered by the other tests in this section.)

This set of tests verifies the use of user subroutines UTEMP and UFIELD in conjunction with composite structural shells. These tests are modifications of the tests described in “*TEMPERATURE, *FIELD, and *PRESSURE STRESS,” Section 5.1.24. Values that were obtained from results files in those problems are set here with user subroutines. A three-layered composite shell with a prescribed temperature or field variable profile through the cross-section is analyzed. Three temperature points and five section integration points are used for each layer. The temperature and field variables are assigned to these five points through a linear interpolation of the three values available per layer from the user subroutine. The results of these analyses verify that this interpolation is correct.

The user subroutines are tested for 4-node shells and 8-node shells.

These tests verify that field variables and mass flow rates are properly transferred to a structure during heat transfer and coupled temperature-displacement analyses. These tests are modifications of the tests described in “Thermal properties,” Section 2.3.1, and “GAPCON,” Section 4.1.5. The tests are cases of uniform one-dimensional heat flux using three-dimensional elements. Consequently, the temperature results are identical for all nodes located at a particular plane along the direction of heat flow. In all cases a steady-state heat transfer analysis is performed in several increments. Values of predefined field variables or mass flow rates vary during the solution, which in turn influences the conductivity across the interface and, thus, the solution.

These tests verify that equivalent pressure stresses are transferred properly to a structure during a mass diffusion analysis. The tests are cases of uniform one-dimensional mass diffusion using three-dimensional elements. Consequently, the concentration results are identical for all nodes located at a particular plane along the diffusion direction.