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Interfacial reinforced viscoelastic damper: experimental and theoretical study

Qi He, Zhao-Dong Xu, Yeshou Xu, Hao Hu, Ying-Qing Guo, Xinghuai Huang and Yao-Rong Dong

Vol. 19 (2024), No. 1, 37–59
DOI: 10.2140/jomms.2024.19.37

The interlayer tearing of a plate viscoelastic (VE) damper is an important issue, which may cause failure of the damper. In this work, two new interfacial reinforced damper structures are proposed, which can effectively enhance the working ability of the VE damper. Dynamic performance tests are carried out on the reinforced VE dampers with a series of temperatures, frequencies and displacement amplitudes. The experimental results show that the proposed VE dampers have great energy dissipation capacity, and a damper with a baffle structure has better performance. The finite element method (FEM) is used to investigate the impact of structure optimization on the performance improvement of the VE dampers. The simulation results demonstrate that the baffle structure significantly enhances the stiffness of the damper, which is consistent with the experimental findings. In order to characterize the influence of frequency, temperature and displacement amplitude on the VE dampers, a modified fractional-derivative Burgers model is proposed, which introduces internal variable theory and a temperature-frequency equivalent principle to explain the amplitude and temperature effect, respectively. The comparison between theoretical and experimental results reveals little discrepancies, thereby affirming the precision of the mathematical model.

interfacial reinforce, viscoelastic damper, internal variable theory, dynamic properties test
Received: 20 May 2023
Revised: 23 August 2023
Accepted: 29 August 2023
Published: 22 December 2023
Qi He
China-Pakistan Belt and Road Joint Laboratory on Smart Disaster Prevention of Major Infrastructures
Southeast University
Zhao-Dong Xu
Key Laboratory of C&PC Structures of the Ministry of Education
Southeast University
Yeshou Xu
Key Laboratory of C&PC Structures of the Ministry of Education
Southeast University
Hao Hu
Nanjing Yangtze River Urban Architecture Design Co., Ltd.
Ying-Qing Guo
Nanjing Forestry University
Xinghuai Huang
Southeast University
Yao-Rong Dong
Xi’an University of Architecture and Technology