内圧を受ける積層複合円筒かくのカップリング効果について

概要

論文の詳細を見る
In general, laminated cylindrical shells manufactured by filament-winding show the coupling effects and behave differently from homogeneous orthotropic ones. In the present study, such coupling effects on stress distributions in the laminated cylindrical shells were examined by use of Donnell's equation under the boundary conditions of clamped edges. The followings were obtained from the present analysis. (1) Circumferential displacements occur near the edges in the antisymmetric angle-ply laminates. (2) Twisting moments occur near the edges in the symmetric angle-ply laminates. (3) Bending moments occur in the central part of cylinder far away from both edges in the antisymmetric cross-ply laminates. These coupling effects decrease rapidly as the number of layers increases and the mechanical behaviors become close to those of homogeneous orthotropic laminates. In addition, the distributions of interlaminar shear stresses near the edges under high lateral shear force and the effects of stacking sequence and thickness ratio on them were analysed by using the finite element method because of low interlaminar shear strength in laminates. It was concluded that the interlaminar shear stresses decrease rapidly away. from the clamped edges, but are considerably high near the edges especially in the case of large thickness.
社団法人日本材料学会の論文
1979-12-15