Abstract
In this paper, dynamic crack propagation in a 2D isotropic medium under a generalized thermal shock in the framework of eXtended Finite Element Method (XFEM) is studied. A new set of tip enrichment functions for displacement and temperature based on the near tip fields for a moving crack is proposed. In addition, the maximum circumferential stress criterion is developed using the stress field near the moving crack to determine the crack propagation direction. The fully coupled generalized thermoelasticity equations based on the Lord-Shulman model are considered as the governing equations. The effect of the thermal wave magnitude on the crack propagation path as well as on the crack speed is discussed in details.
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