Abstract
Steady-state thermal stress intensity factors in infinite two-dimensional interfacially cracked bimaterials are evaluated using the boundary element method. The singular behavior of temperature and displacement fields in the vicinity of the crack tip is modelled through special crack tip elements, while the transformation of domain integrals to equivalent boundary integrals, combined with the multi-domain technique, eliminates the need for a domain discretization. The effect of the boundary surface's geometry on the modelling of the infinite problem, is investigated. The complex stress intensity factor is computed using the displacement and traction formulas and their accuracy and dependency on the discretization used, is also examined. Results are given for a wide range of bimaterial properties' mismatch.
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