含环向贯穿脱层的轴压圆柱层壳屈曲分析:II——算例分析

BUCKLING ANALYSIS OF DELAMINATED SHELL FOR THE FIRST ORDER SHEAR DEFORMATION THEORY

  • 摘要: 脱层的存在将会大大降低层合结构的屈曲载荷。利用含环向贯穿脱层壳的屈曲分析模型,对各种算例进行分析。首先通过与经典理论和一阶剪切理论结果的比较,验证了分析模型的正确性,指出了它们各自的适用范围。考虑了脱层壳的三种不同屈曲模态。分析了不同径厚比、边界条件及脱层长度、深度、位置对脱层壳屈曲载荷的影响。最后给出了正交各向异性脱层壳的屈曲分析以及铺层角度对脱层壳屈曲载荷的影响。

     

    Abstract: Delaminations may reduce the buckling load of the laminated structure greatly. In this paper, various examples were analyzed by using the model in part I. First, by comparing with the results of the classical theory and first-order shear-deformation theory, the model was validated and the usable range of each theory was pointed out. Three different buckling modes of delaminated shell were considered. The influence of different ratios of radius to thickness, boundary condition and length, depth and position of the delamination on the buckling load was analyzed. Finally, the buckling analysis of delaminated orthotropic shell and the influences of ply orientation of the material on the buckling load of a delaminated shell were given.

     

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