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Frequency based damage identification of laminated rubber isolation bearing
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Qiao-yun Wu1, 2, Hong-wei Wang2, Hai Feng2, Ying-hong HUANG3, Guo-qiang Jing1, Lan Ding4
Journal of Vibration Engineering | 2024, 37(7) : 1230 - 1238
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Journal of Vibration Engineering | 2024, 37(7): 1230-1238
Frequency based damage identification of laminated rubber isolation bearing
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Qiao-yun Wu1, 2, Hong-wei Wang2, Hai Feng2, Ying-hong HUANG3, Guo-qiang Jing1, Lan Ding4
Affiliations
  • 1State Key Laboratory for Health and Safety of Bridge Structures, Wuhan 430034, China
  • 2School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China
  • 3China Power Construction Engineering Consulting Central Southern Co., Ltd., Wuhan 430071, China
  • 4Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Published: 2024-07-28 doi: 10.16385/j.cnki.issn.1004-4523.2024.07.015
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A damage identification method of laminated rubber bearing based on its natural frequency is proposed in this paper. Through the periodic structural characteristics of laminated rubber bearings and the characteristic waveguide nano method of the periodic structure，the relationship between the natural frequency and the change of overall shear modulus of the basic periodic unit is deduced，and the sensitivity identification equations of the rate of natural frequency change to unit damage is established. The identification equation set is solved by the constrained optimization method. The damage identification of the laminated rubber isolation bearing based on the change of natural frequency is therefore realized. The example of the calculation model considers the influence of the upper structure on the rubber bearing at the bottom layer，which makes the calculation model more in line with practical engineering. The effectiveness and accuracy of the damage identification method proposed in this paper is verified by the three-dimensional finite element numerical siulation analysis.

damage identification  /  laminated rubber bearing  /  sensitivity analysis  /  periodic structure  /  natural frequency
Qiao-yun Wu, Hong-wei Wang, Hai Feng, Ying-hong HUANG, Guo-qiang Jing, Lan Ding. Frequency based damage identification of laminated rubber isolation bearing[J]. Journal of Vibration Engineering, 2024 , 37 (7) : 1230 -1238 . DOI: 10.16385/j.cnki.issn.1004-4523.2024.07.015
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2024.07.015
  • Receive Date：2022-08-22
  • Online Date：2026-02-12
  • Published：2024-07-28
Article Data
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History
  • Received：2022-08-22
  • Revised：2022-11-30
Funding
Affiliations
    1State Key Laboratory for Health and Safety of Bridge Structures, Wuhan 430034, China
    2School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China
    3China Power Construction Engineering Consulting Central Southern Co., Ltd., Wuhan 430071, China
    4Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
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https://castjournals.cast.org.cn/joweb/zdgcxb/EN/10.16385/j.cnki.issn.1004-4523.2024.07.015
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
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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