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。