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    Displacement discontinuity method for interfacial cracks in one-dimensional hexagonal quasi-crystal coating under thermal-mechanical loading

    Access Status
    Fulltext not available
    Authors
    Zhang, X.
    Zhao, M.
    Fan, C.
    Lu, Chunsheng
    Dang, H.
    Date
    2022
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhang, X. and Zhao, M. and Fan, C. and Lu, C. and Dang, H. 2022. Displacement discontinuity method for interfacial cracks in one-dimensional hexagonal quasi-crystal coating under thermal-mechanical loading. Journal of Thermal Stresses. 45 (7): pp. 517-537.
    Source Title
    Journal of Thermal Stresses
    DOI
    10.1080/01495739.2022.2078451
    ISSN
    0149-5739
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/88975
    Collection
    • Curtin Research Publications
    Abstract

    This study derived Green’s functions of the concentrated interfacial displacement and temperature discontinuities. Green’s functions and the displacement and temperature discontinuity method were used to analyze interfacial cracks in a one-dimensional (1D) hexagonal quasi-crystal (QC) coating under thermal-mechanical loading. The boundary integral-differential equations were established for an interfacial crack, the fundamental solutions were obtained for uniformly distributed temperature, and the displacement discontinuities were applied over a line element. The near-crack-tip oscillatory singularity of stresses was eliminated by introducing the Gaussian distribution function to approximate the delta function. After this treatment, the expressions of the stress and heat flux intensity factors without oscillatory singularity, and the energy release rate (ERR) at the crack tips were obtained. The displacement and temperature discontinuity boundary element method for numerical simulation is proposed, and the influence of relevant factors is briefly discussed.

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