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Modelling dynamic crack propagation using the scaled boundary finite element method

✍ Scribed by E. T. Ooi; Z. J. Yang

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
910 KB
Volume
88
Category
Article
ISSN
0029-5981

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✦ Synopsis

Abstract

This study presents a novel application of the scaled boundary finite element method (SBFEM) to model dynamic crack propagation problems. Accurate dynamic stress intensity factors are extracted directly from the semi‐analytical solutions of SBFEM. They are then used in the dynamic fracture criteria to determine the crack‐tip position, velocity and propagation direction. A simple, yet flexible remeshing algorithm is used to accommodate crack propagation. Three dynamic crack propagation problems that include mode‐I and mix‐mode fracture are modelled. The results show good agreement with experimental and numerical results available in the literature. It is found that the developed method offers some advantages over conventional FEM in terms of accuracy, efficiency and ease of implementation. Copyright © 2011 John Wiley & Sons, Ltd.

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