界面に損傷を有する金属基繊維複合材料の挙動に関する弾塑性解析

概要

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The use of the metal matrix system in advanced composite has attracted much attention for applications in high-temperature environments. The behavior of the metal matrix composite is very complex as the metal matrix undergoes plastic deformation at elevated temperatures. Moreover, the residual stress and interfacial property degradation affect the behavior of the composite. An elasto-plastic analysis is made to study the mechanical behavior of a metal matrix fiber composite with damage on interface and residual stress. A homogenization theory with multiscale asymptotic expansion is used to describe a homogenized constitutive equation of the composite. The interface which consists of separate and contacted zones is modeled as a spring layer. A boundary integral equation method is applied to obtain perturbed displacement increments for homogenization. The elasto-plastic behavior of the metal matrix composite at elevated temperatures is evaluated from the homogenized equation with the perturbed displacement increment. The numerical results are compared with the experimental results of the metal matrix composite.
一般社団法人日本機械学会の論文
1995-04-25