Determination of Stress Intensity Factor for Interface Crack under Uniform Heat Flow by Crack Tip Stress Method

摘要

This paper deals with the analysis of the thermal stress intensity factor for interfacial crack in dissimilar materials under uniform heat flow by using the finite element method. This method is based on the fact that the singular stress field near the interface crack tip is controlled by the stress values at the crack tip node calculated by FEM. The calculation shows that the present method has the sufficient accuracy in the interface crack problems under thermal stress.