Research on the iterative method for model updating based on the frequency response function

作     者：Wei-Ming Li Jia-Zhen Hong 

作者机构：Department of Engineering MechanicsShanghai Jiaotong University200240 ShanghaiChina 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2012年第28卷第2期

页      面：450-457页

核心收录：

学科分类：07[理学] 08[工学] 081402[工学-结构工程] 070104[理学-应用数学] 081304[工学-建筑技术科学] 0802[工学-机械工程] 0813[工学-建筑学] 0814[工学-土木工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the Key Project of the National Natural Science Foundation of China (11132007) 

主　　题：Model updating Model reduction Frequency response function Iteration 

摘      要：Model reduction technique is usually employed in model updating process. In this paper, a new model updat- ing method named as cross-model cross-frequency response function （CMCF） method is proposed and a new iterative method associating the model updating method with the mo- del reduction technique is investigated. The new model up- dating method utilizes the frequency response function to avoid the modal analysis process and it does not need to pair or scale the measured and the analytical frequency re- sponse function, which could greatly increase the number of the equations and the updating parameters. Based on the traditional iterative method, a correction term related to the errors resulting from the replacement of the reduction ma- trix of the experimental model with that of the finite element model is added in the new iterative method. Comparisons be- tween the traditional iterative method and the proposed itera- tive method are shown by model updating examples of solar panels, and both of these two iterative methods combine the CMCF method and the succession-level approximate reduc- tion technique. Results show the effectiveness of the CMCF method and the proposed iterative method .