Interface failure by cavity growth to coalescence

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    Abstract

    For a thin metal layer between ceramics ductile failure by the growth of voids along one of the interfaces is studied numerically. An axisymmetric cell model is used to represent an array of uniformly distributed hemispherical interface voids. The bonding to the ceramics gives rise to highly constrained plastic flow, which may result in a cavitation instability in some cases. Remeshing is used in the cell model computations to be able to follow void growth to a state very near final void coalescence. The analyses are used to determine the traction-separation law relevant to interface crack growth by a ductile void growth mechanism. (C) 1999 Elsevier Science Ltd. All rights reserved.
    Original languageEnglish
    JournalInternational Journal of Mechanical Sciences
    Volume42
    Issue number2
    Pages (from-to)381-395
    ISSN0020-7403
    DOIs
    Publication statusPublished - 2000

    Keywords

    • plasticity
    • finite strains
    • ductile fracture

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