Modelling dynamic crack propagation using the scaled boundary finite element method

E. T. Ooi, Z. J. Yang

    Research output: Contribution to journalArticlepeer-review

    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. © 2011 John Wiley & Sons, Ltd.
    Original languageEnglish
    Pages (from-to)329-349
    Number of pages20
    JournalInternational Journal for Numerical Methods in Engineering
    Volume88
    Issue number4
    DOIs
    Publication statusPublished - 28 Oct 2011

    Keywords

    • Crack arrest
    • Dynamic crack propagation
    • Fracture
    • Remeshing
    • Scaled boundary finite element method
    • Stress intensity factors

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