复合材料圆柱壳屈曲时缺陷敏感度的Koiter理论

Sensitivty of Initial Imperfections for the Buckling of Composite Cylindrical Shells with Koiter's Theory

本文运用柯依脱理论(Koiter'sTheory)对于复合材料圆柱壳屈曲性能的初始缺陷影响进行了一般性分析,为复合材料壳体的初始缺陷敏感度分析建立了基本控制方程;壳体的初始缺陷被设定为具有某些固定形式的或者是随机形式的,为了讨论和比较各种复合材料叠层壳体的缺陷敏感度的影响,用数值算例计算了由玻璃/环氧,硼/环氧,和炭/环氧等复合材料所组成的圆柱壳体的届曲性能。

In this paper,some general analysis is done byuse of Koiter's Theory for the effect of initial imperfections on the buckling behavior of composite cylindrical shells.The governing equations for analysing sensitivity of initial imperfections of composite shells are formulated and theseinitial imperections of shlls are assumed to be in some defined formor in random distributed form. Numerical examples are evaluated for shells compsed by giass/epoxy,baron/epoxy and carbon/ epoxyand comparison is made to discuss the influenceof the sensitivity of initial imperfections of composite laminated shells.