圆柱形网壳的塑性极限分析

本探讨了圆柱形网壳结构的塑性极限分析，在分析过程中，采用拟壳法将圆柱形网壳结构等效为连续的夹层壳，然后对等效夹层壳进行塑性极限分析，由于夹层壳结构的极限条件是线性的，因而在求解时问题得到了大的简化，鉴于有矩理论的复杂性，本在作极限分析时，采用了无矩理论和半无矩理论的平衡方程分别作为中短壳和长壳的平衡方程。

Plastic limit analysis of cylindrical reticulated shells

The plastic limit analysis of cylindrical reticulated shells has been studied in this paper. In the process of analysis, firstly, cylindrical reticulated shells are equivalent to composite sandwich continuous shells by using the shell analogy method.Then, the plastic limit analysis of composite sandwich continuous shells is made. Because of the linear limit condition of equivalent composite sandwich shells, the problem gets much more simple during the solution of equations. Since normal plastic theory is too complex, the membrane theory and the semi-membrane theory are adopted to establish the equilibrlm equations in plastic limit analysis.