基于演化-单纯形算法和结构模态参数反演结构物理参数的方法
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摘要
针对遗传算法、演化策略两种演化计算存在的问题,将一种基于浮点编码的演化-单纯形算法应用于结构动态反应下的结构物理参数反演分析,建立了一种基于不完全模态参数的结构物理参数反演分析方法.通过与其他方法的算例分析表明:该方法有精度和搜索效率高、对初值选取基本上无依赖性、可以较好地反映“残缺”的高阶模态信息等优点.
Aiming at the existing problems in genetic algorithm and evolutionary strategy calculation, the authors apply the evolutionary-simplex algorithm based on floating encoding to the inverse analysis of structural physical parameters under the dynamic response conditions, and establish an inverse analysis method about structural physical parameter based on incomplete modal parameters. As compared with other inverse analysis methods, this method shows a series of advantages such as high precision and searching efficiency, no dependence on the selection of initial values, and sufficient reflection on the inadequate high rank modal information.
Aiming at the existing problems in genetic algorithm and evolutionary strategy calculation, the authors apply the evolutionary-simplex algorithm based on floating encoding to the inverse analysis of structural physical parameters under the dynamic response conditions, and establish an inverse analysis method about structural physical parameter based on incomplete modal parameters. As compared with other inverse analysis methods, this method shows a series of advantages such as high precision and searching efficiency, no dependence on the selection of initial values, and sufficient reflection on the inadequate high rank modal information.
引文
[1] 杜修力,曾迪.一种高效的全局数值优化方法:演化-单纯形算法[J].土木工程学报,2003,36(5) : 46-57． DU Xiu-li, ZENG Di. An effective algorithm for global optimization: Evolutionary-simplex algorithm[J]. China Civil Engineering Journal, 2003, 36(5) : 46-57． (in Chinese)
[2] 文立华.用测试的模态参数识别结构参数[J].工程力学,1997,14(1) :62-68． WEN Li-hua. To identifu structural parsmeter by test modal parameter[J]. Engineering Mechanics, 1997, 14(1) : 62-68． (in Chinese)
[3] 刘丰年,李宏男,刘明.一种有效的结构动态参数识别方法[J].地震工程与工程振动,1998,18(1) :31-34． LIU Feng-nian, LI Hong-nan, LIU Ming. Identifying dynamic parameters of structures using optimum method[J].Earthquake Engineering and Engineering Vibration, 1998, 18(1) : 31-34． (in Chinese)
[4] CHEN J C, GARB A J A. Analytical model improvement using test data[J]. AIAA J, 1980, 18(6) : 684-690．
[5] COLLINS J D, HART G C. Statistical identificatin of structures[J]. AIAA J, 1974, 12(2) : 185-190．
[2] 文立华.用测试的模态参数识别结构参数[J].工程力学,1997,14(1) :62-68． WEN Li-hua. To identifu structural parsmeter by test modal parameter[J]. Engineering Mechanics, 1997, 14(1) : 62-68． (in Chinese)
[3] 刘丰年,李宏男,刘明.一种有效的结构动态参数识别方法[J].地震工程与工程振动,1998,18(1) :31-34． LIU Feng-nian, LI Hong-nan, LIU Ming. Identifying dynamic parameters of structures using optimum method[J].Earthquake Engineering and Engineering Vibration, 1998, 18(1) : 31-34． (in Chinese)
[4] CHEN J C, GARB A J A. Analytical model improvement using test data[J]. AIAA J, 1980, 18(6) : 684-690．
[5] COLLINS J D, HART G C. Statistical identificatin of structures[J]. AIAA J, 1974, 12(2) : 185-190．
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