The nonlinear prebuckling deformations and initial geometric imperfections of the shell were both taken into account. 壳体屈曲的边界层理论被推广用于湿热环境的情况,相应的奇异摄动法用于确定层合圆柱薄壳的屈曲荷载和后屈曲平衡路径。
So long as proper handling is conducted,the shell theory can be applied to axisymmetric thick shell.Thus the problem of three dimensional elasticity can be avoided. 只要恰当处理,薄壳理论可用于轴对称的厚壳,因而回避了厚壳的三维空间弹性力学的问题。