Koiter-Boundary Layer Singular Perturbtion Method forAxial Compressed Stiffened Cylindrical Shells
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摘要: 将Koiter理论和奇异摄动理论中的边界层法相结合,处理加筋圆柱壳无因次化非线性边界层型Karman-Donnell方程由分支点和边界层导致的双重奇异性,提出轴压加筋圆柱壳Koiter-边界层奇异摄动法.对AS-2壳分析表明,本方法具有很好的计算效率和计算精度,与数值解相比更能揭示其内在的影响规律.Abstract: The double singularities induced by bifurcation point and boundary layer in nondimensionalized nonlinear boundary-layer Karman-Donnell equations for axiallycompressed stiffened cylindrical shells can be treated by Koiter-boundary layersingular perturbation method in this paper.Based on the analysis of AS-2 shell,it is demonstrated that the method hashigh computing efficiency and accuracy and some new conclusions can be directiy obtained from the perturbation formulas.
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