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Energy dissipation of the friction sliding isolation structure with MoS2 as the lubricating material

Energy dissipation of the friction sliding isolation structure with MoS₂ as the lubricating material

Jiangle Li ^*| Sheliang Wang | Li Gao | Yanzhou Haok | Meng Zhan

School of civil Engineering, Xi’an University of Architecture and Technology, 13 Yanta Road, Beilin District, Xi’an 710055, China

College of Urban, Henan University of Urban Constuction, Longxiang Street, Xincheng District, Pingdingshan 467036, China

Corresponding Author Email:

30080206@hncj.edu.cn

Received:

| |

Accepted:

| | Citation

303-316.pdf

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https://acsm.revuesonline.com/accueil.jsp

Abstract:

Considering the importance of friction coefficient in bearing performance and the good properties of MoS₂, this paper designs an innovative friction sliding isolation bearing with MoS₂ as the lubricating material. The relationship between the friction coefficient and the compressive stress was determined by fitting the results of a loading test, and the feasibility of the material was proved through a shaking table test on a five-layer concrete frame model. Based on the energy dissipation theory, the seismic behavior of the proposed friction sliding isolation structure was simulated on MATLAB/Simulink. The simulation results show that the entire structure had little displacement, despite the slight slippage of the isolation layer, under the simulated earthquake wave. The energy response at different friction coefficients shows that the total seismic energy input of the system increased with the friction coefficient. The change of the total seismic input was not obvious when the friction was up to 0.15. The research findings shed new light on the application of isolation devices in practical engineering

Keywords:

riction sliding isolation, energy dissipation, MoS₂, seismic response, shaking table test

1. Introduction

2. Design and loading test of sliding isolation bearing

3. Damping energy dissipation

4. Isolation layer energy dissipation

5. Conclusions

Acknowledgments

Thanks for the natural sciences foundation (51178388), the SHAN XI province industrial project (2013K07-07, 2014K06-34) and the SHAN XI province education department natural project(2013JK0612,14JK1420).

Basic Scientific Research of Central Colleges (No. 310841171001), Shaanxi Province Postdoctoral Research Project (No. 332100160021), Natural Science Research Projects of Shaanxi (2017JQ5061)

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Energy dissipation of the friction sliding isolation structure with MoS2 as the lubricating material