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Smart Structures and Systems Volume 32, Number 6, December 2023 , pages 349-358 DOI: https://doi.org/10.12989/sss.2024.32.6.349 |
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A real-time hybrid testing based on restart-loading technology for viscous damper |
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Guoshan Xu, Lichang Zheng, Bin Wu, Zhuangzhuang Ji, Zhen Wang and Ge Yang
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| Abstract | ||
| Real-Time Hybrid Testing (RTHT) requires the numerical substructure calculations to be completed within the defined integration time interval due to its real-time loading demands. For solving the problem, A Real-Time Hybrid Testing based on Restart-Loading Technology (RTHT-RLT) is proposed in this paper. In the proposed method, in case of the numerical substructure calculations cannot be completed within the defined integration time interval, the experimental substructure was returned back to the initial state statically. When the newest loading commands were calculated by the numerical substructure, the experimental substructure was restarted loading from the initial state to the newest loading commands so as to precisely disclosing the dynamic performance of the experimental substructure. Firstly, the methodology of the RTHT-RLT is proposed. Furthermore, the numerical simulations and experimental tests on one frame structure with a viscous damper are conducted for evaluating the feasibility and effectiveness of the proposed RTHT-RLT. It is shown that the proposed RTHT-RLT innovatively renders the nonreal-time refined calculation of the numerical substructure feasible for the RTHT. The numerical and experimental results show that the proposed RTHT-RLT exhibits excellent performance in terms of stability and accuracy. The proposed RTHT-RLT may have broad application prospects for precisely investigating the dynamic behavior of large and complex engineering structures with specific experimental substructure where a restarting procedure does not affect the relevant hysteretic response. | ||
| Key Words | ||
| accuracy; dynamic performance; real-time hybrid testing; restart loading viscous damper | ||
| Address | ||
| (1) Guoshan Xu, Lichang Zheng: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; (2) Guoshan Xu, Lichang Zheng: Key Lab of Structures Dynamic Behavior and Control, Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; (3) Guoshan Xu, Lichang Zheng: Key Lab of Intelligent Disaster Mitigation, Ministry of Industry and Information Technology, Harbin 150090, China; (4) Bin Wu, Zhuangzhuang Ji, Zhen Wang, Ge Yang: School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China; (5) Bin Wu, Zhen Wang, Ge Yang: Hainan Institute of Wuhan University of Technology, Sanya 572000, China. | ||