|Table of Contents|

[1] Xu Feihong, Xu Zhaodong, Guo Yingqing, Zhang Xiangcheng, et al. Modeling and control of MR damper considering trapped air effect [J]. Journal of Southeast University (English Edition), 2018, (1): 54-61. [doi:10.3969/j.issn.1003-7985.2018.01.009]

Modeling and control of MR damper considering trapped air effect()

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

2018 1
Research Field:
Civil Engineering
Publishing date:


Modeling and control of MR damper considering trapped air effect
Xu Feihong1 Xu Zhaodong1 Guo Yingqing2 Zhang Xiangcheng3 Zhao Yuliang1
1Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China
2Nanjing Dongrui Damping Control Technology Co., Ltd, Nanjing 210033, China
3School of Mechanics and Engineering Science, Zhengzhou University, Zhengzhou 450001, China
magnetorheological damper performance test air pocket force lag semi-active control
Due to the high viscosity of magnetorheological(MR)fluid, eliminating air pockets dissolved in the fluid is very difficult, which results in a force lag phenomenon. In order to evaluate the performance of a semi-active control system based on the MR damper considering the trapped air effect, a performance test on a MR damper is carried out under different loading cases, and the influence of the input current, excitation amplitude and frequency on the force lag phenomenon is analyzed. A concise and efficient parametric model, combining the simple Bouc-Wen model and a spring with small stiffness, is proposed to portray the experimental characteristics of the MR damper with force lag, and then the response analysis of the semi-active controlled single-degree-of-freedom(SDOF)structure is performed using the classic clipped-optimal control strategy based on acceleration feedback. Numerical results show that the trapped air in the MR fluid can weaken the control effect of the MR damper, and the performance of the semi-active control system will be reduced more obviously and become close to the passive-off control with the increasing content of air trapped in the MR fluid.


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Biographies: Xu Feihong(1989—), male, Ph.D.candidate;Xu Zhaodong(corresponding author), male, doctor, professor, xuzhdgyq@seu.edu.cn.
Foundation items: The National Science Fund for Distinguished Young Scholars(No.51625803), China and Korea International Cooperation Project of the National Key Research and Development Program(No.2016YEE0119700), the Fundamental Research Funds for the Central Universities(No.3205008102), the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(No.CE02-2-33), Research and Innovation Project for College Graduates of Jiangsu Province(No.KYLX15_0088, KYLX16_0255), the State Foundation for Studying Abroad, China.
Citation: Xu Feihong, Xu Zhaodong, Guo Yingqing, et al. Modeling and control of MR damper considering trapped air effect [J].Journal of Southeast University(English Edition), 2018, 34(1):54-61.DOI:10.3969/j.issn.1003-7985.2018.01.009.
Last Update: 2018-03-20