Abstract
In this paper, three formulations of a single-region dual boundary element method for dynamic crack problems are presented. The dynamic stress intensity factors are calculated by crack opening displacement. These methods are developed to study the dynamic behaviour of stationary cracks in threedimensional analysis. Formulations of the methods and computational efficiency characterized by memory and central processing unit time are discussed. In order to compare these three approaches, they are applied to pure mode and mixed-mode crack problems in infinite and finite domains.
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