Structural damage identification optimization method using change rate of modal strain energy

被引：0
|
作者：
Miao B.-R. [1 ]
Zhang Y. [1 ]
Huang Z. [1 ]
Zhang Z. [1 ]
Yang S.-W. [1 ]
机构：
[1] State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2023年 / 36卷 / 02期
关键词：
algorithm optimization; damage identification; FEM; modal strain energy; wavelet transform;
D O I：
10.16385/j.cnki.issn.1004-4523.2023.02.019
中图分类号：
学科分类号：
摘要：
According to the problem of insufficient positioning accuracy and quantitative analysis in the process of structural damage identification，this paper proposes a damage identification method based on the combination of structural vibration response-based Modal Strain Energy Change Rate（MSECR）and optimization technology. Firstly，a two-step method is used to determine the suspicious damage unit and quantitatively analyze its damage degree. The finite element method is applied to establish the damage characteristic model of the structure，and the element modal strain energy change rate index is used to construct the objective function of the damage index optimization analysis. In the process of numerical analysis，Particle Swarm Optimization Algorithm （PSOA）and Genetic Algorithm（GA）are used to optimize the design variables. At the same time，the quantitative analysis effect and identification efficiency of the damage location of the two methods of modal strain energy change rate and wavelet analysis are compared. In actual calculation examples，the beam structures are used to verify the results of the damage identification optimization method. The results show that this method can significantly improve the effectiveness of structural vibration damage and positioning. This method can not only perform quantitative analysis of structural damage quickly and accurately，but also has a better positioning effect than the wavelet method. And it can improve the identification efficiency of quantitative analysis. However，it is also found that the positioning accuracy of this method in the implementation process is easily affected by noise. The optimization of the objective function can improve the anti-noise ability of the structural damage identification method to a certain extent. The research of this method will provide certain technical guarantee for the practical engineering application of the damage identification algorithm in the future railway intelligent operation and maintenance. © 2023 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：477 / 486
页数：9
相关论文
共 23 条
  • [1] PATRO S K., Vibration-based damage detection techniques used for health monitoring of structure： a review［J］, Journal of Civil Structural Health Monitoring, 6, 3, pp. 477-507, (2016)
  • [2] YOKOYAMA A., Innovative changes for maintenance of railway by using ICT-to achieve“smart maintenance” ［J］, Procedia CIRP, 38, pp. 24-29, (2015)
  • [3] Shuqing WANG, Mingqiang XU, Modal strain energy-based structural damage identification： a review and comparative study［J］, Structural Engineering International, 29, 2, pp. 234-248, (2019)
  • [4] SEYEDPOOR S M., A two stage method for structural damage detection using a modal strain energy based index and particle swarm optimization［J］, International Journal of Non-Linear Mechanics, 47, 1, pp. 1-8, (2012)
  • [5] SEYEDPOOR S M., Damage detection of structures using modal strain energy with Guyan reduction method［J］, Journal of Rehabilitation in Civil Engineering, 8, 4, pp. 47-60, (2020)
  • [6] LIU Wenguang, YAN Long, GUO Longqing, Damage identification of elastic thin plates by modal strain energy method［J］, Noise and Vibration Control, 36, 3, pp. 164-168, (2016)
  • [7] LIANG Zhenbin, Study on damage detection of structures based on modal strain energy［D］, (2017)
  • [8] Jun WEI, DU Yongxiao, WU Zhiqiang, Et al., Damage identification of beam structures based on modal strain energy and Bayesian data fusion theory［J］, Journal of Railway Science and Engineering, 16, 8, pp. 2052-2061, (2019)
  • [9] FU Y Z，, LIU J K，, WEI Z T，, Et al., A two-step approach for damage identification in plates［J］, Journal of Vibration and Control, 22, 13, pp. 3018-3031, (2016)
  • [10] WEI Z T, LU Z R., Damage identification in plates based on the ratio of modal strain energy change and sensitivity analysis［J］, Inverse Problems in Science and Engineering, 24, 2, pp. 265-283, (2016)
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