| 基于频响函数的模型修正方法 |
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| 引用本文： | 李伟明,洪嘉振.基于频响函数的模型修正方法[J].上海交通大学学报,2011,45(10):1455-1459. |
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| 作者姓名： | 李伟明 洪嘉振 |
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| 作者单位： | (上海交通大学 船舶海洋与建筑工程学院， 上海 200240) |
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| 基金项目： | 国家自然科学基金项目(10772113) |
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| 摘 要： | 提出了一种新的基于频响函数的模型修正方法.该方法不但避免了模态分析过程，以设计参数为修正对象，而且不需要将有限元模型的频响函数与实验测得的频响函数进行匹配，仅需要少量实测的频响函数数据即可完成模型修正过程.通过桁架结构的模型修正算例表明，采用该模型修正方法在噪声的干扰下仍然能够获得理想的修正结果，证明了方法的有效性.
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| 关 键 词： | 模型修正 频响函数 有限元法 |
| 收稿时间： | 2010-10-12 |
Research on Model Updating Method Based on Frequency Response Functions |
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| LI Wei-ming,HONG Jia-zhen.Research on Model Updating Method Based on Frequency Response Functions[J].Journal of Shanghai Jiaotong University,2011,45(10):1455-1459. |
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| Authors: | LI Wei-ming HONG Jia-zhen |
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| Institution: | (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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| Abstract: | This paper proposed a new model updating method based on frequency response functions which avoids the modal analysis process.This method takes the design parameters as the updating objects,moreover,it does not need matching the frequency response functions of the finite element model and the experiment and only a few measured data are needed to fulfill model updating.The model updating of a plane truss structure shows that the proposed method can get the perfect results under disturb of noise which proves ... |
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| Keywords: | model updating method frequency response function finite element method |
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