抄録
The structure of filament-wound composite is similar to that of unidirectional reinforcement materials. Therefore, two unique types of fracture appear in filament-wound composite under lateral load as in the case of unidirectional reinforcement materials. One of them is microscopic fracture which leads to a decrease in stiffness of filament-wound composite, and the other is macroscopic fracture due to interlamina delamination which causes large-scale dropping of lateral compressive load. Previously, the microscopic fracture had been investigated by using the elastic-plastic analysis.
In this paper, the numerical model was improved in order to investigate the behaviours of both microscopic and macroscopic fracture.
It was found that the numerical model considering the discontinuity of displacement at the node points and the Tresca's equivalent stress as the fracture criterion was in good agreement with the experiment results.
