均質化法による一方向CFRPの破壊モード遷移解析 : (第1報, 定式化)

概要

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Composite materials are more and more frequently used in various engineering fields due to their high performance. In the structural design using composite materials, therefore, it is essential to clarify the fracture mechanism, where microscopic fracture, such as fiber rupture or interface failure, can not be ignored. On the other hand, the homogenization theory, on which much attention is paid recently, is one of the attractive methods that can evaluate not only macroscopic but microscopic structure. The objective of this study is to develop an analysis method to simulate the macro- and microscopic fracture propagation simultaneously and to clarify the fracture mode transition of CFRP in the tensile test. This study is composed of two parts. In the first part of this study, finite element formulation in conjunction with homogenization theory including pseudo three dimensional analysis model for CFRP is briefly introduced and in the second part, the new algorithm to simulate the macro- and microscopic fracture propagation using the homogenization method is proposed.
一般社団法人日本機械学会の論文
1999-02-25