The treatment of secondary strains within a strain-based failure assessment diagram

R. A. Ainsworth, P. J. Budden, C. Y. Oh, Y. J. Kim

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    In a companion paper, proposals for the shape of a strain-based failure assessment diagram (FAD) have been made. The developments in that paper and in related works on strain-based fracture assessment have largely been for remotely applied strains, such as those produced by welding. This paper re-writes existing methods for treating secondary stresses within stress-based FADs in the framework of the proposed strain-based FAD. It is shown that residual strains must be included fully in the elastic regime but at large applied strains their contribution to fracture can be relaxed considerably. Practical methods for inclusion of secondary strains within the strain-based FAD are then developed and shown to be conservative relative to some detailed finite element calculations.

    Original languageEnglish
    Pages (from-to)14-20
    Number of pages7
    JournalInternational Journal of Pressure Vessels and Piping
    Volume104
    DOIs
    Publication statusPublished - 2013 Apr

    Keywords

    • Failure assessment diagram
    • Secondary stress
    • Strain-based

    ASJC Scopus subject areas

    • General Materials Science
    • Mechanics of Materials
    • Mechanical Engineering

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