Title: Boundary element methods for the analysis of crack growth in non-linear fracture

Authors: V.M.A. Leitao, M.H. Aliabadi

Addresses: Technical University of Lisbon, Lisbon, Portugal. Department of Engineering, QMW, University of London, London, E1 4NS, UK

Abstract: In this paper, a boundary element method of simulating crack growth in the presence of residual stress fields is presented. The method presented is an elastoplastic fracture mechanics (EPFM) approach for crack growth simulation. A nonlinear J-integral is used in the fatigue life calculations. This is shown to agree well with experimental measurements of crack growth in prestressed open hole specimens. Results are also pre- sented for the case where the prestress is applied to specimens which have been precracked.

Keywords: residual stress; stress intensity factor; non-linear J-integral.

DOI: 10.1504/IJMPT.2000.001239

International Journal of Materials and Product Technology, 2000 Vol.15 No.1/2, pp.104-116

Published online: 01 Jul 2003 *

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