Dynamic Crack Propagation Analysis by Moving Singular Boundary Elements

[+] Author and Article Information
Rafael Gallego, José Dominguez

Escuela Tecnica Superior de Ingenieros Industriales, Universidad de Sevilla, 41012 Sevilla, Spain

J. Appl. Mech 59(2S), S158-S162 (Jun 01, 1992) doi:10.1115/1.2899481 History: Received December 10, 1990; Revised April 19, 1991; Online March 31, 2008


An efficient boundary element procedure for the dynamic analysis of crack propagation in unbounded and arbitrary shape finite bodies is presented. The procedure is based on the direct time domain formulation of the boundary element method. A moving singular element and a remeshing technique have been developed to model the asymptotic solution of the stresses near the propagating crack tip. These ideas are easily implemented for a boundary discretization as opposed to similar procedures previously developed in a finite element context. The method is applied to problems of dynamic crack propagation in finite and infinite elastic domains. The obtained numerical results are compared with infinite domain analytical solutions and with available numerical solutions for finite domains.

Copyright © 1992 by The American Society of Mechanical Engineers
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