界面に損傷を有する金属基繊維複合材料の非線形挙動の解析

概要

論文の詳細を見る
Metal matrix fiber composites are promising candidate material systems for high-temperature applications. The deformation behavior of the composites at elevated temperatures is very complex owing to a number of factors, including the residual stress caused by high processing temperature and interfacial property degradation. A homogenization theory with multiscale asymptotic expansions is introduced as a suitable method to analyze nonlinear behavior of a metal matrix composite. The final formulation of the homogenized constitutive equations is described in the solution for perturbed displacements in the composite. To solve for the perturbed displacement field in the composite, a boundary integral equation method is introduced with an eigenstrain concept for thermal and applied strains. The fiber-matrix interface is modeled as a spring layer where discontinuity of displacements on the interface is assumed to be proportional to the associated tractions. Residual thermal stress and nonlinear behavior for transverse deformations are determined by the present method.
一般社団法人日本機械学会の論文
1994-01-25