所属单位：机电学院
发表刊物：Zhendong Ceshi Yu Zhenduan
摘要：Based on strain modal assurance criterion, a model updating method is proposed. Strain modal assurance criterion, on one hand, is a satisfactory approach to evaluate the correlation between finite model simulation and experiment. On the other hand, strain modal assurance criterion offers global frequency error and local mode shape error for model updating. The basic theory of strain mode and finite element model updating is briefly introduced. Then, take a stiffened structure as example, the process of model updating based on strain mode is illustrated. Firstly, strain modal frequencies and mode shapes are obtained from simulation and experiment, respectively. And then, modal assurance criterion of strain modes and error of modal frequencies are calculated. The objective function for model updating is constructed based on above errors and unknown parameters are estimated utilizing genetic algorithm. Finally, the estimated parameters are substituted into the finite model to validate the accuracy and effectiveness. The results show that: the proposed method can reproduce the response in the updating domain and have an excellent ability to predict the response outside the updating domain. © 2018, Editorial Department of JVMD. All right reserved.
ISSN号：1004-6801
是否译文：否
发表时间：2018-10-01
合写作者：Zhan, Ming,岳林,Zhang, Baoqiang
通讯作者：郭勤涛
发表时间：2018-10-01