The use of conservative integral in bi-material interface crack problems subjected to thermal loads

摘要

A linear bi-material elastic body containing a crack at the interface and subjected to thermal loading is analyzed. The J(2) line integral, developed for mechanical loads by Khandelwal and Chandra Kishen [Khandelwal, Chandra Kishen, J.M., 2006. Complex variable method of computing J(k) for bi-material interface cracks. Engineering Fracture Mechanics 73, 1568-1580] is extended to thermal loading. This method, used in conjunction with the finite element method, is shown to be useful in the prediction of stress intensity factors for cracks lying at the interface of two dissimilar materials and subjected to any type of thermal loading. (c) 2008 Elsevier Ltd. All rights reserved.