结构极限分析的一种新的分域平衡方法

A New Subdomain Equilibrium for Structure Limit Analysis

根据极限分析的上限定理，利用塑性铰线的概念，将整体结构的功率方程转化为子域的功率方程，利用王洪生提出的分配系数法，进而得出子域的平衡方程．在简单加载情况下求出结构的极限乘子；在复杂加载的情况下求出极限曲面的界限方程，并利用配点法给出极限曲面的近似方程．

According to superior limit theorem of ultimate analysis,the power equation of entire structure will be transformed into the power equation of subdmain by using the concept of plastic hinge line. The equilibrium equation of subdomain is proposed by means of distributive coefficient which is presented by professor wang Hongsheng. Under th simple and complex condition, structural limt multiplier or limitation equation with limt curved surface are derived. Finally the approximate equation with limitcurved surface is proposed using collocation point method.