極異方性を考慮した FW 円筒の横圧縮に関する研究

概要

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Filament-wound composite has distinct interfaces differing from conventional metals, and the fracture at these interfaces (macroscopic fracture) causes a remarkable decrease in strength and stiffness. In this investigation, the behavior of macroscopic fracture (delamination) of filament-wound tubes was observed under static lateral compression and the crack initiation at the end cross-sections of tubes was examined by the finite element method using the polar-anisotropy. The following were revealed from the results. (1) The fracture behavior in filament-wound tubes under lateral compressive load was affected by winding-angle of reinforcement, and various fracture modes were observed for the specimens with variable winding-angles. (2) On the numerical analysis, the domains involving microscopic fracture were produced at different locations predictable from the anisotropic or isotropic properties. Therefore, for the design of filament-wound tubes the anisotropic effect should be taken into consideration.
社団法人日本材料学会の論文
1985-02-15