Thermoviscoplastic micromechanics model for short fiber composites
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The Benveniste and Dvorak (1990) reinterpretation of the thermoelastic Mori-Tanaka method is extended to model the thermoviscoplasticity of metal matrix composites. The matrix unified viscoplasticity equations of Miller are cast in a total strain formulation to yield the instantaneous tangent stiffness for use in the micromechanics model. The thermomechanical history dependence of the composite residual stresses is determined. Finally, a previous statement (Boyd et al., 1990) concerning the composite steady state creep is corrected herein.