Biaxial stress effects on estimating J under combined mechanical and thermal stresses

Chang Young Oh, Yun Jae Kim, Peter Budden, Robert A. Ainsworth

    Research output: Contribution to journalArticlepeer-review


    In this paper, the applicability to bi-axial stress states of a simple approximation proposed in our previous work for quantifying the elastic-plastic J under combined primary and secondary stresses is investigated.To produce the bi-axial stress states, circumferential cracked pipes under combined pressure, axial tension (or compression) and thermal stresses are considered. The results suggest that the proposed approximation can be applied to bi-axial stress states, and is slightly more conservative for bi-axial mechanical stresses than for uni-axial ones. The degree of conservatism decreases with increasing strain hardening exponent and with increasing relative magnitude of secondary stress. © 2011 Elsevier Ltd.
    Original languageEnglish
    Pages (from-to)365-374
    Number of pages9
    JournalInternational Journal of Pressure Vessels and Piping
    Issue number10
    Publication statusPublished - Oct 2011


    • Bi-axial stress
    • Combined primary and secondary stresses
    • Finite element analysis
    • J-integral
    • V-factor


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