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复合材料具有强度高 ,比强度大 ,材料性能可设计等优点 ,由各向异性复合材料制成的薄壳广泛地应用于海洋、航空和军工工业之中 .根据边界层理论 ,采用奇异摄动法 ,考虑非线性前屈曲、大挠度和初始几何缺陷的影响 ,分析在两端固支条件下 ,各向异性层合圆柱壳在轴压下的屈曲和后屈曲性态 ,以挠度为摄动参数 ,求后屈曲平衡方程的渐进解并导出后屈曲平衡路径的四级表达式 ,同时给出了确定临界荷载的方法 .
Composite materials with high strength, high strength, material properties can be designed, etc. The thin shell made of anisotropic composite material is widely used in marine, aviation and military industries.According to the boundary layer theory, using singular perturbation Method, taking into account the influence of nonlinear pre-buckling, large deflection and initial geometric imperfections, the buckling and post-buckling behavior of anisotropic laminated cylindrical shells under axial compression are analyzed under the condition of both ends supported and fixed, with deflection as perturbation Parameters, the asymptotic solution of the post-buckling equilibrium equation is derived and the four-level expression of the post-buckling equilibrium path is derived. At the same time, the method of determining the critical load is given.