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The equivalent
Havriliak–Negami model for characterizing the dynamic
properties of viscoelastic dampers
Qiang-Qiang Li, Zhao-Dong Xu, Yao-Rong Dong, Zhen-Hua He, Yeshou Xu and Chen Zhu |
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Vol. 16 (2021), No. 4, 471–486
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Abstract |
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Viscoelastic (VE) dampers are extensively utilized in the earthquake mitigation of structures in civil engineering. The description of the dynamic properties is an ongoing issue for VE dampers due to their significant temperature, frequency, and strain amplitude dependences. In this paper, a novel mathematical model, the equivalent Havriliak–Negami (EHN) model, is proposed to characterize the dynamic properties of VE dampers by incorporating the time-temperature superposition principle and amplitude-temperature equivalent principle. Performance tests on VE dampers under different temperatures, frequencies, and strain amplitudes are conducted. In conjunction with the test results, the EHN model is validated through comparison with the popular VE models by simulating experiments. Based on the proposed model, a generalized master curve for simultaneously reflecting the dynamic properties of VE dampers at different temperatures, frequencies, and strain amplitudes is finally presented. The results demonstrate that the EHN model is reliable in characterizing the dynamic behaviors of VE dampers with high accuracy. |
Keywords
viscoelastic dampers, dynamic properties, mathematical
model, performance tests, master curve
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Milestones
Received: 27 December 2020
Revised: 25 March 2021
Accepted: 10 June 2021
Published: 9 November 2021
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Authors |
| Qiang-Qiang Li | |
| Key Laboratory of C&PC
Structures of the Ministry of Education Southeast University Si-Pai Lou 2# Nanjing, 210096 China |
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| Zhao-Dong Xu | |
| Key Laboratory of C&PC
Structures of the Ministry of Education Southeast University Si-Pai Lou 2# Nanjing, 210096 China |
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| Yao-Rong Dong | |
| Key Laboratory of C&PC
Structures of the Ministry of Education Southeast University Si-Pai Lou 2# Nanjing, 210096 China |
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| Zhen-Hua He | |
| School of Civil Engineering, Xi’an
University of Architecture and Technology Xi’an University of Architecture and Technology No. 13 Middle Yanta Road, Beilin District Xi’an, 710055 China |
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| Yeshou Xu | |
| Key Laboratory of C&PC
Structures of the Ministry of Education Southeast University Si-Pai Lou 2# Nanjing, 210096 China |
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| Chen Zhu | |
| Key Laboratory of C&PC
Structures of the Ministry of Education Southeast University Si-Pai Lou 2# Nanjing, 210096 China |
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