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Modelling dynamic crack propagation using the scaled boundary finite element method
Author(s) -
Ooi E. T.,
Yang Z. J.
Publication year - 2011
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.3177
Subject(s) - finite element method , fracture mechanics , boundary (topology) , structural engineering , dynamic problem , position (finance) , boundary value problem , dynamic stress , fracture (geology) , mode (computer interface) , extended finite element method , stress intensity factor , boundary element method , mechanics , computer science , engineering , mathematical analysis , mathematics , algorithm , physics , geotechnical engineering , finance , economics , operating system
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.