The energy method was applied to analyze the restraining action exerted by adjacent plate element in the same section,which is called plate assembly effect(PAE) in the stage of postbuckling.

• 本文根据势能驻值原理,建立了均匀受压矩形管的大挠度弹性屈曲理论,用于分析屈曲后相邻板件间的相互约束作用,即屈曲后板组效应。