一方向性多繊維複合材料の界面はく離進行における空間的に分布した繊維・マトリックス・界面破壊間の相互作用の近似解法(<小特集>材料のミクロ・メゾ評価)

概要

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In order to describe the relation of mesoscopic phenomena such as interfacial debonding, and breakage of fiber and matrix to macroscopic stress-strain curve of unidirectional composites, an approximate nondimensional solution method was presented using two-dimensional model. With application of this method to several examples in which the species and locations of broken components were varied to each other, the features that the fiber-breakage-induced debonding occurs at lower strain than the matrix-breakage-induced one, the overall debonding is accelerated due to the mechanical interactions under the existence of many broken fiber and matrix, the progress of overall debonding is dependent on species of the broken components and on the geometrical location of broken components and debonded interface, and stress-strain curve shows drops in stress due to progress of debonding were revealed. Also as an extended application of the present method, a nondimensional Monte Carlo Simulation method was presented to describe the behavior of the composite in which the number and location of broken components and debonded interface vary with increasing strain.
社団法人日本機械学会の論文
1999-03-25