Effect of internal pressure on plastic loads of 90° elbows with circumferential part-through surface cracks under in-plane bending

Seok Pyo Hong, Jong Hyun Kim, Yun Jae Kim, P. J. Budden

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    18 Citations (Scopus)

    Abstract

    This paper quantifies the effect of internal pressure on plastic loads for elbows with circumferential through-wall and constant-depth part-through surface cracks under in-plane bending. Results are based on FE limit analyses using elastic-perfectly plastic materials and the non-linear geometry option. It is found that, for larger values of r/t, the pressure effect on plastic loads is more pronounced and plastic loads for combined loading cases could be much higher than those for pure bending cases. Full FE data of plastic loads are tabulated, and effects of crack geometries on interaction curves are discussed.

    Original languageEnglish
    Pages (from-to)577-596
    Number of pages20
    JournalEngineering Fracture Mechanics
    Volume77
    Issue number4
    DOIs
    Publication statusPublished - 2010 Mar

    Bibliographical note

    Funding Information:
    This research was performed under programmes of the Basic Atomic Energy Research Institute and Engineering Research Center (No. 2009-0063170 ), funded by the Korea Science & Engineering Foundation .

    Keywords

    • Circumferential crack
    • Combined pressure and in-plane bending
    • Elbow
    • Finite element limit analysis
    • Plastic load

    ASJC Scopus subject areas

    • General Materials Science
    • Mechanics of Materials
    • Mechanical Engineering

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