Thermal residual stresses and stress distributions under tensile and compressive loadings of short fiber reinforced metal matrix composites

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ÎÄÕÂÒ³Â룺399 - 404

Key words£ºmetal matrix composite; finite element method; thermal residual stresses; stress distribution

Abstract: The thermal residual stresses and the stress distributions of short fiber reinforced metal matrix composite under tensile and compressive loadings were studied using large strain axisymmetric elastoª²plastic finite element method. It is demonstrated that the thermal residual stresses can result in asymmetrical stress distributions and matrix plasticity. The thermal residual stresses decrease the stress transfer in tension and enhance the stress transfer in compression. The fiber volume fraction has more important effects on the thermal residual stresses and the stress distributions under tensile and compressive loadings than the fiber aspect ratio and the fiber end distance.