| 遗传算法在结构有限元模型修正中的应用 |
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| 引用本文： | 闫桂荣,段忠东,欧进萍.遗传算法在结构有限元模型修正中的应用[J].哈尔滨工业大学学报,2007,39(2):181-186. |
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| 作者姓名： | 闫桂荣 段忠东 欧进萍 |
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| 作者单位： | 哈尔滨工业大学,土木工程学院,哈尔滨,150090 |
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| 摘 要： | 针对传统优化矩阵方法和优化元素方法的目标函数存在误导性的问题,采用改进的最优化元素型模型修正法,该方法定义了合理的目标函数,不需要质量归一化的模态振型.为了快速、准确地求得全局最优解,使用一种浮点数编码的遗传算法来解决模型修正问题中的优化问题.通过对一个7个自由度的质量-弹簧系统和一个复杂平面桁架结构模型修正的数值计算,验证基于遗传算法的改进的最优化元素型法的有效性.
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| 关 键 词： | 模型修正 优化元素型法 遗传算法 |
| 文章编号： | 0367-6234(2007)02-0181-06 |
| 修稿时间： | 2005-09-16 |
Application of genetic algorithm on structural finite element model updating |
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| YAN Gui-rong,DUAN Zhong-dong,OU Jin-ping.Application of genetic algorithm on structural finite element model updating[J].Journal of Harbin Institute of Technology,2007,39(2):181-186. |
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| Authors: | YAN Gui-rong DUAN Zhong-dong OU Jin-ping |
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| Affiliation: | School of Civil Engineering, Harbin Institute of Technology, Harbin 150090,China |
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| Abstract: | The Improved Optimal Elemental Method for Finite Element Model Updating is employed,because this method defines a feasible objective function,which is more consistent than traditional optimization based MUT.The traditional numerical algorithms can not escape from possible local entrapment,while Genetic Algorithm(GA) may produce a global-optimal solution.A Float-encoding Genetic Algorithm(FGA) is proposed for the solution of this problem.Finally numerical applications to a 7 DOF(Degrees of Freedom) Mass-Spring System and a complicated planar truss structure are presented.The results testify that the Improved Optimal Elemental Method employing Genetic Algorithm is feasible and effective. |
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| Keywords: | model updating optimal elemental method genetic algorithm |
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