積層複合円筒殻の軸圧縮座屈に及ぼすカップリング効果

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タイトル別名
  • Coupling Effect on Axial Compressive Buckling of Laminated Composite Cylindrical Shells
  • セキソウ フクゴウ エントウカク ノ ジク アッシュク ザクツ ニ オヨボス

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説明

In general, the laminated composite structures exhibit the coupling effect due to the anisotropy and the unsymmetric lamination. In the present paper, such coupling effects on the buckling stresses in the cross-ply and angle-ply laminated cylindrical shells subjected to axial compression are considered. That is, the effects of stacking sequence, number of lamination, boundary conditions and buckling modes on the buckling stresses are analysed by use of the equilibrium equation or of the energy method based on the DONNELL-type expressions.<BR>The analytical predictions are verified by carrying out the buckling experiments on the thirteen kinds of carbon-fiber/epoxy (CFRP) laminated cylinders. The experiments show a good agreement with the analytical results. It is found that the coupling effects of laminates rapidly die out as the number of layers, N, increases and the buckling stresses become close to higher values for homogeneous orthotropic cylinders. The buckling stresses in antisymmetric laminates with N=2 are especially much decreased.

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