Axisymmetric Thermal Stress Analysis in the Steady State by Improved Multiple-Reciprocity BEM

Abstract

The boundary element method (BEM) does not require a domain integral in steady thermoelastic problems without heat generation. However, in problems with distributed heat generation, the domain integral is necessary. This paper shows that the axisymmetric problem of steady thermoelasticity with nonuniform heat generation over the region can be easily solved without a domain integral by means of the improved multiple-reciprocity boundary element method. The conventional multiple-reciprocity boundary element method is not suitable for the complicated heat generation. In the improved multiple-reciprocity boundary element method, the heat generation is interpolated by boundary integral equation.