Modelling dynamic crack propagation using the scaled boundary finite element method

ET Ooi, James Yang

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)329-349
Number of pages21
JournalInternational Journal for Numerical Methods in Engineering
Issue number4
Early online date7 Apr 2011
Publication statusPublished - 28 Oct 2011
Externally publishedYes


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