STP1074

    Comparison of Elastic-Plastic Fracture Mechanics Techniques

    Published: Jan 1990


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    Abstract

    The first part of this paper reviews the adequacy of simple estimation procedures for predicting the crack growth and failure behavior of cracked structures. These simple methods include: J-estimation schemes (where five different schemes are presented including two new methods), the R6 approach, and the VR-curve technique. The second part of the paper discusses methods for predicting elastic-plastic fracture under conditions where the simple schemes are not applicable. This includes a discussion of integral parameters, mainly focusing on the T*-integral, and the local (or damage) based approaches. These two approaches are required where the degradation near a crack tip depends on the history of damage accumulation.

    Keywords:

    integral parameters, T, *, J, -integral, estimation schemes, R6, VR, -curve, local approach, damage, crack growth, elastic-plastic, fracture, history dependence, cracked pipe


    Author Information:

    Brust, FW
    Battelle Columbus Division, Columbus, OH

    Nakagaki, M
    Kyushu Institute of Technology, Iizuka-City,

    Gilles, P
    Framatome, Paris,


    Paper ID: STP19008S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP19008S


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