ミクロ構造を考慮した平織強化複合材料の損傷進展解析

概要

論文の詳細を見る
Woven fabric composites have superior ductility, tear strength and impact resistance to the conventional unidirectional fiber reinforced composites. However, it is very difficult to reveal their mechanical behaviours due to the geometric complexity. Especially, the damage, several kinds of failure such as matrix cracking, fiber breaking and transverse cracking in fiber bundle, affects and complicates the mechanical behaviour. In order to analyze the mechanical behaviour of plain woven fabric composite plates, the three-dimensional finite element analytical code based on damage mechanics, which has been developed in the previous paper, has been improved. In this paper, the priodic boundary condition has been applied and the mechanical behaviour under tensile load has been analyzed to catch the material properties without the effect of free edge. On the other hand, uniaxial tensile test has been performed and the damage development at the center area of specimen has been observed by CCD camera. As the results, it is recognized that the calculational and the experimental results have a good agreement and that the proposed procedure is very useful for the material design of woven fabric composites.
社団法人日本機械学会の論文
2002-07-25