STP1280: Notch-Tip Stresses and Strains Under Nonproportional Loading

    Singh, MNK
    Research assistant and professors, The University of Waterloo, Waterloo, Ontario

    Glinka, G
    Research assistant and professors, The University of Waterloo, Waterloo, Ontario

    Dubey, RN
    Research assistant and professors, The University of Waterloo, Waterloo, Ontario

    Pages: 25    Published: Jan 1997


    Abstract

    An analytical method for estimating notch-root elastic-plastic strains and stresses in isotropic bodies subjected to multiaxial nonproportional loading sequences is presented. Two models are proposed based on the analysis of strain energy density in the notch-tip region. Each model consists of a set of seven relationships that can be solved easily for elastic-plastic strain and stress increments knowing the fictitious notch-tip elastic stress history and the material stress-strain curve. Results of the validation show that the proposed methods compare well with finite element data and that each solution set forms the limits of a band within which actual notch-tip strains can be found.

    Keywords:

    Glinka's rule, multiaxial fatigue, Neuber's rule, nonproportional loading, notches, plasticity, strain energy density, fatigue (materials), fracture (materials), testing, deformation (materials), multiaxial fatigue


    Paper ID: STP16216S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP16216S


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