具脱层的正交铺设圆柱壳的初始后屈曲分析

基于非线性弹性理论，建立了含脱层正交铺设圆柱壳的后屈曲控制方程，应用Koiter初始后屈曲理论和小参数摄动法，导出了系统的一阶和二阶摄动控制方程，以及相应的边界条件、位移连续条件和力平衡条件，然后逐阶求解．算例中，讨论了不同脱层深度和长度对脱层复合材料圆柱壳屈曲和初始后屈曲特性的影响，并与已有文献进行了比较．

INITIAL POSTBUCKLING ANALYSIS OF CROSS-PLY CYLINDRICAL SHELLS WITH DELAMINATION

Based on the nonlinear elastic theory, the postbuckling governing equations for delaminated crossply cylindrical shells are derived. By employing the Koiter theory and perturbation technique,the first order and the second order perturbation equations with the corrseponding boundary conditions,the force equilibrium conditions etc. are obtained and resolved. In the numerical calculation, the effects of various delamination parameters on buckling and initial postbuckling of the delaminated composite cylindrical shells are discussed, and the present results are compared with the available data.