| 基于经验遗传-单纯形算法和结构模态参数识别结构物理参数的方法 |
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| 引用本文： | 姜丽萍,杜修力.基于经验遗传-单纯形算法和结构模态参数识别结构物理参数的方法[J].地震工程与工程振动,2007,27(4):116-121. |
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| 作者姓名： | 姜丽萍 杜修力 |
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| 作者单位： | 1. 山东省建筑科学研究院,山东,济南,250031
2. 北京工业大学,城市与工程安全减灾省部共建教育部重点实验室,北京,100022 |
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| 基金项目： | 国家自然科学基金项目(50278006、50325826)，北京市教委科学技术与研究生建设项目 |
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| 摘 要： | 对于复杂的大自由度系统的反演分析,遗传算法每步计算中包含大量的正演分析,成为限制遗传算法应用的运行速度的瓶颈。减少反演分析中的正演计算次数,是扩大遗传算法适用范围的有效途径。经验遗传-单纯形算法正是解决这一问题的一种有效方法。本文将这一方法应用于不完全模态参数已知条件下的结构物理参数识别研究。结果表明:本文建议的方法有精度和搜索效率高、对初值选取依赖性不强、可以反映"残缺"的高阶模态信息等优点。
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| 关 键 词： | 经验遗传-单纯形算法 结构动力特性参数 结构物理参数识别 |
| 文章编号： | 1000-1301（2007）04-0116-06 |
| 修稿时间： | 2007-02-10 |
Structural physical parameter identification based on empirical genetic algorithm and structural modal parameter |
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| JIANG Liping,DU Xiuli.Structural physical parameter identification based on empirical genetic algorithm and structural modal parameter[J].Earthquake Engineering and Engineering Vibration,2007,27(4):116-121. |
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| Authors: | JIANG Liping DU Xiuli |
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| Institution: | 1, Shandong Provincial Academy of Building Research, Jinan 250031, China; 2. The Key Lab. of Urban Security and Disaster Engineering, Ministry of Education and Beijing University of Technology, Beijing 100022, China |
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| Abstract: | In the complex conversion analysis of multi-degree-of-freedom system,there are large calculation counts in every calculation step of genetic algorithm,which limit the running speed of genetic algorithm.So the positive calculation counts to be reduced is an effective method to enlarge the range of genetic algorithm application.The empirical genetic-simplex algorithm is one of the effective method to solve the problem.In this paper,the empirical genetic-simplex algorithm is applied to structural physical parameter identification based on incomplete modal parameters.The results show that the empirical genetic-simplex algorithm has many advantages,such as high precision and searching efficiency,independence of the selection of initial values,and sufficient reflection on the inadequate high rank modal information. |
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| Keywords: | empirical genetic-simplex algorithm structural dynamic characteristics parameter structural physical parameter |
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