WIT Press


Cracks In Three Dimensions: A Dynamic Dual Boundary Element Analysis

Price

Free (open access)

Paper DOI

10.2495/BE970321

Volume

19

Pages

11

Published

1997

Size

659 kb

Author(s)

P.H. Wen, M.H. Aliabadi and D.P. Rooke

Abstract

In this paper the dual boundary element method is used to calculate dynamic stress intensity factors for three-dimensional cracked structures. The application of Laplace transforms to the time-dependent equations of elasticity reduce the problem to a static one in Laplace space. By applying the displacement integral equation on one of the crack surfaces and the traction boundary integral equation on the other, a general mixed-mode crack problem can be solved in a single region, in the same way as a static problem. Stress intensity factors in the time domain are obtained by the use of Durbin's inversion method. The accuracy of this method is demonstrated by its application to embedded elliptical cracks and edge cracks. 1 Introduction The application of th

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