| 空间网格结构的多参数优化设计 |
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| 引用本文： | 谈若明,肖建春,韩志刚.空间网格结构的多参数优化设计[J].空间结构,2009,15(2). |
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| 作者姓名： | 谈若明 肖建春 韩志刚 |
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| 作者单位： | 1. 贵州大学继续教育学院,贵州贵阳,550003
2. 贵州大学空间结构研究所贵州贵阳550003 |
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| 摘 要： | 空间网格结构优化的设计参数很多,如结构高度、网格数、构件截面尺寸等.这些参数的量级或量纲不同,优化比较困难.运用改进的遗传算法进行空间网格结构的形状和截面优化,考虑了结构变形、压杆稳定、长细比等约束条件.采用拉格朗日乘子法对约束条件和优化函数进行处理.得到用于分析的无约束函数,提高遗传算法的运行效率.使用MATLAB遗传算法工具箱提供的函数编制了包含连续、不连续实数变量和整数变量的混合变量编码的结构优化程序.箅例分析表明,程序可靠.算法收敛较快.
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| 关 键 词： | 空间网格结构 优化 遗传算法 多参数 |
Multi-variable optimal design of spatial grid structures |
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| TAN Ruo-ming,XIAO Jian-chun,HAN Zhi-gang.Multi-variable optimal design of spatial grid structures[J].Spatial Structures,2009,15(2). |
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| Authors: | TAN Ruo-ming XIAO Jian-chun HAN Zhi-gang |
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| Affiliation: | 1.School of Continue Education;Guizhou University;Guiyang 550003;China;2.Institute of Space Structures;Guiyang;550003;China |
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| Abstract: | There are many design variables in the optimization of spatial grid structures,for example,the structural height,the number of grids,the cross-sectional dimension of members,and etc.The optimization of the structures is relatively difficult because the variables have different physical property or different quantitative attribute.The shape and cross-section optimization of spatial grid structures is performed by an improved genetic algorithm.The constraint conditions are composed of the structural deformati... |
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| Keywords: | MATLAB |
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