Structural Model Updating Based on Modal Parameters and Modified Firefly Algorithm

被引：0
|
作者：
Fegn Z. [1 ,2 ]
Wang W. [1 ,2 ]
Hua X. [1 ,2 ]
Chen Z. [1 ,2 ]
机构：
[1] College of Civil Engineering, Hunan University, Changsha
[2] Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, Changsha
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2022年 / 49卷 / 11期
基金：
中国国家自然科学基金;
关键词：
damage detection; firefly algorithm; modal parameter; model updating; structural health monitoring;
D O I：
10.16339/j.cnki.hdxbzkb.2022136
中图分类号：
学科分类号：
摘要：
In order to improve the accuracy and effectiveness of structural model updating, a finite element model updating method based on modal parameters and a modified firefly algorithm is proposed, in which an objec⁃ tive function based on modal parameters is formulated and solved by the modified firefly algorithm. The modified fire⁃ fly algorithm is compared to be accurate and superior to the original firefly algorithm, genetic algorithm, and particle swarm optimization in solving a numerical simulation example of a truss model. And it shows that the optimal solution obtained by the modified firefly algorithm is closer to the actual value, and the scatteredness is low, which proves the accuracy and effectiveness of the modified algorithm. Finally, the accuracy and effectiveness of this method in struc⁃ tural finite element model updating are verified by a damage identification test of a 6-DOF shear frame experimental model. © 2022 Hunan University. All rights reserved.
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收藏
页码：252 / 259
页数：7
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