点对称结构的概念及受力分析

The Concept and Analysis of Point symmetry Structures

提出了点对称结构的概念．通过研究这种特殊结构的对称特性，发现点对称结构与轴对称结构一样也可简化成半边结构，使求解简化．但两半边结构的边界条件有本质不同．

The concept of point symmetry structures is proposed in this paper.Through studying the symmetrical characteristic of these special structures,it is discovered that point symmetry structures can be simplified to half structures to make the analysis as simple as axis symmetry structures can,but the boundary conditions of their half structures are different.