STP964: Thermoviscoplastic Nonlinear Constitutive Relationships for Structural Analysis of High-Temperature Metal Matrix Composites

    Chamis, CC
    Senior research engineer, Aerospace Structures/Composites, and aerospace structures engineer, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

    Hopkins, DA
    Senior research engineer, Aerospace Structures/Composites, and aerospace structures engineer, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

    Pages: 20    Published: Jan 1988


    Abstract

    A set of thermoviscoplastic nonlinear constitutive relationships (TVP-NCR) is presented. This set is unique and has been developed mainly for application to high-temperature metal matrix composites (HT-MMC) and is applicable to thermal and mechanical properties. Formulation of the TVP-NCR is based at the micromechanics level. The TVP-NCR are of simple form and readily integrated into nonlinear composite structural analysis. Results show that this unique set of TVP-NCR is computationally effective. It provides a direct means for predicting complex materials behavior at all levels of the composite simulation; that is, from the constituent materials, through the several levels of composite mechanics, and up to the global response of complex HT-MMC structural components.

    Keywords:

    metal matrix composites, thermal properties, mechanical properties, thermoviscoplastic behavior, nonlinear composites


    Paper ID: STP25952S

    Committee/Subcommittee: D30.08

    DOI: 10.1520/STP25952S


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