【摘要】 在对板筋结构进行分类的基础上 ,提出了大型板筋结构尺寸、形状优化的系统方法。围绕拟牛顿和线性规划算法 ,对中间变量设计、灵敏度分析、KnhnTucker条件、约束删除、对偶变换、目标 -约束近似、满应力设计等具体过程进行了说明。最后 ,对小浪底水轮发电机下机架方案进行了优化改进更多还原

【Abstract】 Classifies sheet-beam structure and proposes the systematic optimization methods for size/shape redesign on large shellbeam structure.Through the primal Newton and linear program(simplex or panalty function)algorithms,illustrates such procedures as intermediate variable design,sensitivity evaluation,Kuhn Tucker condition,constraint removing,Wolfe dual transforming,objective/constraint function approximation and fully stressing redesign. XLD turbine lower bracket is solved to show size/shape optimization effects.更多还原