Rheological models of MR dampers applied in semi-active control of structures

被引：0
|
作者：
Zhang Z.-K. [1 ,2 ]
Peng Y.-B. [2 ,3 ]
机构：
[1] College of Civil Engineering, Tongji University, Shanghai
[2] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
[3] Shanghai Institute of Disaster Prevention and Relief, Tongji University, Shanghai
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2020年 / 33卷 / 03期
关键词：
Axisymmetric model; MR damper; Parallel-plate model; Semi-active control; Shear stress;
D O I：
10.16385/j.cnki.issn.1004-4523.2020.03.007
中图分类号：
学科分类号：
摘要：
In this paper, the asymmetrical model of shear-valve mode MR dampers loaded with uniform velocity is derived, thereby the dynamic characteristics of MR fluids in the damping channel of MR dampers are studied. It is revealed that the shear stress of the MR fluid appears to be linear distribution along the radial direction. The shear stress in the center of damping channel always remains to zero, which does not rely upon the loading velocity. Thus, the parallel-plate model of value mode MR dampers is suitable for modeling shear-valve mode MR dampers. Moreover, the functional relationships among damper force, loading velocity and inputted current are attained by fitting the characteristic parameters of MR fluids against input currents. In order to improve the applicability of the parallel-plate model of MR dampers subjected to non-uniform velocity, a modified parallel-plate model is proposed. The validity of the modified parallel-plate model is demonstrated by comparison with the experimental results, which underlies the efficient calculation of input currents for driving the MR damper in the semi-active control of structures. © 2020, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：494 / 502
页数：8
相关论文
共 13 条
  • [1] OU Jinping, Structural Vibration Control: Active, Semiactive and Intelligent Control, pp. 2-3, (2003)
  • [2] Dan M, Ishizawa Y, Tanaka S, Et al., Vibration characteristics change of a base-isolated building with semi-active dampers before, during, and after the 2011 Great East Japan earthquake, Earthquake and Structures, 8, 4, pp. 889-913, (2015)
  • [3] LI Zhongxian, XU Longhe, New Types of MR Dampers and Semiactive Control Theory, pp. 22-23, (2012)
  • [4] PENG Yongbo, LI Jie, Theory and Methods of Stochastic Optimal Control of Engineering Structures, pp. 160-161, (2017)
  • [5] Yang M G, Li C Y, Chen Z Q., A new simple non-linear hysteretic model for MR damper and verification of seismic response reduction experiment, Engineering Structures, 52, pp. 434-445, (2013)
  • [6] SUN Hongxin, WANG Wenxi, WANG Xiuyong, Et al., Performance experiment and improved hysteretic model of the rotary shear MR damper, Journal of Vibration Engineering, 24, pp. 394-399, (2011)
  • [7] WANG Wei, XIA Pinqi, LIU Chaoyong, Experimental modeling of MR dampers based on Bouc-Wen function, Journal of Vibration Engineering, pp. 296-301, (2006)
  • [8] Peng Y, Yang J, Li J., Parameter identification of modified Bouc-Wen model and analysis of size effect of magnetorheological dampers, Journal of Intelligent Material Systems and Structures, 29, 7, pp. 1464-1480, (2018)
  • [9] Graczykowski C, Pawlowski P., Exact physical model of magnetorheological damper, Applied Mathematical Modelling, 47, pp. 400-424, (2017)
  • [10] Yang G., Large-scale magnetorheological fluid damper for vibration mitigation: Modeling, testing and control, (2001)
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