FW 円筒の衝撃横圧縮荷重下における破壊挙動に関する研究(<小特集>強化プラスチックス小特集)

概要

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When a helical-wound composite is subjected cylinder is subject to lateral compression load, delamination ocurres in the interlamina. This delamination causes a remarkable decrease in strength. In this paper the behavior of macroscopic failure of helical-wound composite cylinder under impact lateral compression load is observed experimentally and the elemental property is made clear. From the numerical analysis,it was made clear that stress wave propagation induces macroscopic fracture. The following are the main results. (1) The fracture behavior of helical--wound composite cylinder under impact lateral compression load is affected by the deformation velocity and the winding-angle of filament. (2) The impact absorbed energy of helical-wound composite cylinder under impact lateral com-pression load increases with increasing deformation velocity, and this effect becomes remarkable when the winding-angle was large. (3) The fracture of helical-wound composite cylinder ocurres in fiber boudle and interlamina. In paticular, interlamina fracture causes a remarkable decrease in strength, because the speed of stress wave propagation is affected by the different mechanical impedance of the fiber boudle-layer and the resin-layer.
社団法人日本材料学会の論文
1986-05-15