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    Prediction of Stress-Strain Response under General Multiaxial Loading

    Published: Jan 1982

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    This paper deals with verification of a mathematical model capable of predicting rate-independent elastic-plastic stress-strain response of materials subjected to general multiaxial loading. The model is based on the concepts of incremental plasticity and a new hardening rule. Its application to predict steady response is illustrated for the case of combined cyclic out-of-phase (nonproportional) axial and torsional loading. The predictions are presented in the form of computer-generated hysteresis loops showing axial and torsional stress-strain response. The predicted response is shown to be in good agreement with available test results on two metals. Capabilities, limitations, and extensions of the model are briefly discussed in relation to the observed and predicted response.


    constitutive relations, multiaxial cyclic loading, incremental plasticity, hardening rule, verification

    Author Information:

    Garud, YS
    Consulting Engineer, S. Levy, Inc., Campbell, Calif.

    Committee/Subcommittee: E28.94

    DOI: 10.1520/STP28889S

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