A non-matching finite element-scaled boundary finite element coupled method for linear elastic crack propagation modelling

Zhenjun Yang, X.F. Wang, D.S. Yin, Ch Zhang

    Research output: Contribution to journalArticle

    33 Citations (Scopus)

    Abstract

    A novel method coupling the scaled boundary finite element method (SBFEM) and the finite element method (FEM) is developed for linear elastic fracture modelling. A very simple but effective remeshing procedure based on the FE mesh only is used to accommodate crack propagation. The crack-tip region is modelled by an SBFE subdomain whose semi-analytical displacement solutions are used to extract accurate stress intensity factors. The SBFE subdomain is coupled with the surrounding FE mesh through virtual interfaces so that non-matching nodal discretisations of the shared boundaries can be used and only one SBFE subdomain is needed at a crack-tip. A few plane problems are modelled to validate the new method.
    Original languageEnglish
    Pages (from-to)126-136
    JournalComputers and Structures
    Volume153
    Issue numberJune
    DOIs
    Publication statusPublished - 25 Mar 2015

    Bibliographical note

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    Keywords

    • Scaled boundary finite element method
    • Non-matching mesh
    • Stress intensity factors
    • Crack propagation
    • Remeshing procedure
    • Linear elastic fracture mechanics

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