介在物を含む材料の弾塑性変形と変形パラメータ

概要

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The macroscopic elastic-plastic deformation behaviour of inhomogeneous material is affected by the microscopic distribution of stress and strain in respective heterogeneous regions of the material. Several parameters are considered to describe the deformation behaviour of inhomogeneous material, and their relationship is discussed analytically. A model of inhomogeneous material with inclusions imbedded in a matrix is adopted for the numerical simulation of the present study. The changes of the parameters during elastic-plastic deformation are calculated and compared. Among the parameters, the constraint ratio and the plastic accommodation parameter are not affected by the degree of inhomogeneity. A modified plastic accommodations parameter is also proposed, which is uniquely related to the constraint ratio. The constraint model based on the constraint ratio is extended to describe the elastic-plastic deformation behaviour of inhomogeneous material.
一般社団法人日本機械学会の論文
1993-04-25