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基于拟满应力设计和遗传算法的网架截面优化方法
引用本文:赵波,简政,刘伟.基于拟满应力设计和遗传算法的网架截面优化方法[J].上海力学,2007,28(3):369-374.
作者姓名:赵波  简政  刘伟
作者单位:西安理工大学水利水电学院 西安710048
摘    要:通过在遗传算法中嵌入拟满应力算子,提出了一种以网架结构杆件截面作为离散变量的优化设计方法,即基于拟满应力设计和遗传算法的网架截面优化方法.分析结果表明,该法能够提高遗传算法的搜索效率和获得全局最优解的可靠性,对于同时有应力和位移约束的网架等空间结构截面优化问题,这种混合算法有较高的效率.

关 键 词:网架  遗传算法  拟满应力设计  离散变量
文章编号:0254-0053(2007)03-369-6
修稿时间:2006-12-06

Section Optimization Technique of Frame Structure Based on Full Stress Design and Genetic Algorithm
ZHAO Bo,JIAN Zheng,LIU Wei.Section Optimization Technique of Frame Structure Based on Full Stress Design and Genetic Algorithm[J].Chinese Quarterly Mechanics,2007,28(3):369-374.
Authors:ZHAO Bo  JIAN Zheng  LIU Wei
Abstract:Through introducing an imitative full stress design operator in genetic algorithm(GA),a optimum design technique was proposed for section optimization of frame structure with discrete variables,namely the section optimization technique of frame structure based on full stress design and GA.When GA is used to solve the section optimization problem of frame structure,because of the large number of variables,some disadvantages come out,such as the partial search ability.The improved hybrid optimum technique aims to solve these disadvantages.The numerical results show that this algorithm can enhance the searching efficiency and the reliability of global convergence,and it's efficient for section optimization of frame structure with stress and displacement constraints.
Keywords:frame structure  genetic algorithm  imitative full stress design  discrete variables
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