关键词: 超静定, 凸分析, 本构集, 几何集, 平衡集, 应力, 杆系结构, 条件极值

Abstract: In this paper,the in terseetion of cunstitutive set and geometrical set is first found,then from this,the intersection with equilibrium set.This is a method of convex Analysis in solving the Priblems of conditional extreme value for convex Programming.Statically indeter minate streses,which have a power fumction rela- tion of stress and strain,are determined by means of this method in this paper.Examples show that the results are coincided well with other methods and this method is available for practioe.?

Key words: staticlly, indeterminateness, convex analysis, constitutive set, geometrieal set, eguilibrium set, stress bar system structures, conditlonal extreme value