111 不完全界面が粒子強化金属複合材料の弾塑性挙動に及ぼす影響(OS1-3 微視構造を有する材料の変形と破壊 : シミュレーション)

概要

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As a predominant damage mode, the interfacial damage between the reinforcements and the mairix is matter of importance for the composite materials. Correspondingly, in this study, the effect of imperfect interface is investigated based on a spring interface model. By accounting for the presence of imperfect interface, the modified Eshelby tensor is computed by making use of different methods, and the uniqueness of the solution is discussed. Further, to admit a relatively large amount of interfacial damage, an equivalent model is proposed in the framework of micromechanics. Firstly, in the absence of interfacial damage, the predictive capability of proposed micromechanical framework is demonstrated by comparing with the available experimental data. Then, the effects of interfacial damage on the deformation behavior of a composite ara systematically investigated.
2010-10-09