各杆任意铰接在一个刚体上的平面杆系是一种比较复杂的杆系结构 ,某些其它类型的平面杆系常常可以看作是它的特例。本文将材料的本构关系描述为线弹性幂强化形式 ,推导出了该类平面杆系结构弹塑性分析的普遍表达式 ,编制了通用程序 ,使这一类问题有了一个通用的解题方法 Planar systems in which any rod is hinged on a rigid body is a relatively complicated one. Some other types of planar systems can often be considered as special cases. In this paper, the constitutive relation of materials is described as the linear elastic exponentiation form, and the general expression of the elastic-plastic analysis of the planar rod system is deduced. The general procedure is formulated to make this kind of problem have a universal solution