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Identification method of in-service TMD and structural inherent parameters based on NSGA-Ⅱ
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Wentao ZHAO1, Qing WEN1, Hongxin SUN1, Xiuyong WANG1, Xugang HUA2
Journal of Vibration Engineering | 2025, 38(3) : 507 - 516
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Journal of Vibration Engineering | 2025, 38(3): 507-516
Identification method of in-service TMD and structural inherent parameters based on NSGA-Ⅱ
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Wentao ZHAO1, Qing WEN1, Hongxin SUN1, Xiuyong WANG1, Xugang HUA2
Affiliations
  • 1.Hunan Provincial Key Laboratory of Structures for Wind Resistance and Vibration Control，Hunan University of Science and Technology，Xiangtan 411201，China
  • 2.Key Laboratory for Wind and Bridge Engineering of Hunan Province，Hunan University，Changsha 410082，China
Published: 2025-03-10 doi: 10.16385/j.cnki.issn.1004-4523.2025.03.007
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The vibration reduction efficiency of a tuned mass damper（TMD）is closely related to the inherent parameters of the structure and TMD. Accurate identification of the structure and TMD inherent parameters from the response of the structure-TMD coupling system is necessary for the evaluation of the vibration reduction performance of in-service TMD. This paper offers a parameter identification approach based on NSGA-Ⅱ（Nondominated sorting genetic algorithm）that can identify the parameters of‘bare structure’ and‘bare TMD’ from the coupled structure-TMD response in order to solve the issue of state evaluation of TMDs in service. The structure-TMD coupling equation is constructed. It is reduced and transformed into a two-degree-of-freedom system of the structure-controlled mode and TMD coupling. Two objective functions are constructed by means of the system state space matrix. The genetic algorithm is used to find the optimal solution corresponding to the minimum error between the theoretical value and the experimental value，so as to identify the modal parameters of the structure and TMD. The numerical simulation analysis of parameter identification of single-degree-of-freedom structure-TMD coupling system and multi-degree-of-freedom structure-TMD coupling system is carried out. The results show that the proposed method can accurately identify the inherent parameters of structure and TMD from the dynamic system response of the coupling system.

parameter identification  /  structure-TMD coupling system  /  NSGA-Ⅱ
Wentao ZHAO, Qing WEN, Hongxin SUN, Xiuyong WANG, Xugang HUA. Identification method of in-service TMD and structural inherent parameters based on NSGA-Ⅱ[J]. Journal of Vibration Engineering, 2025 , 38 (3) : 507 -516 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.03.007
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Year 2025 volume 38 Issue 3
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2025.03.007
  • Receive Date：2023-02-17
  • Online Date：2026-02-11
  • Published：2025-03-10
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History
  • Received：2023-02-17
  • Revised：2023-06-20
Funding
Affiliations
    1.Hunan Provincial Key Laboratory of Structures for Wind Resistance and Vibration Control，Hunan University of Science and Technology，Xiangtan 411201，China
    2.Key Laboratory for Wind and Bridge Engineering of Hunan Province，Hunan University，Changsha 410082，China
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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