有限要素法によるCFRP積層はりの損傷進展解析

概要

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In case of three points bending of the CFRP laminate composed of orthogonal stacking (0°/90°…), where longitudinal direction is taken as 0° axis, the fracture aspects are mainly dominated with matrix cracking (transverse crack) in 90° layers, fiber breaking in 0° layers and delamination on the interfaces between 0° and 90° layers spreading toward longitudinal direction. In the present study, numerical analysis for damage propagation of CFRP laminated beam subjected to transverse load is carried out with finite element method (FEM). Stress criterion is employed for the inspection of transverse crack and fiber breaking, while energy release rate is applied to evaluate the propagation of delamination respectively. Some numerical calculations for the CFRP laminated beam demonstrate usefulness and validity of present method through the comparison with the experimental result.
社団法人日本機械学会の論文
1998-11-25