Isogeometric boundary element analysis for two-dimensional thermoelasticity with variable temperature

This work is devoted to numerical analysis for two-dimensional thermoelasticity problems with temperature change by using the isogeometric boundary element method (IGABEM). The present IGABEM, which is highly attractive, possesses advantages of the isogeometric analysis with NURBS and boundary element method. We derive the theoretical formulations in terms of the IGABEM and apply it to thermal stress analysis. We examine the performance and accuracy of the proposed approach through numerical test cases which include steady-state uniform and non-uniform temperature change. The computed results are compared with the reference solutions which were derived from analytical or finite element methods. We also investigate the convergence of the present approach in modeling thermal stress problem.