Research Papers

A Compact Experimentally Validated Model of Magnetorheological Fluids

[+] Author and Article Information
Fei-Hong Xu

Key Laboratory of C&PC Structures of the Ministry of Education,
Southeast University,
Nanjing 210096, China

Zhao-Dong Xu

Key Laboratory of C&PC Structures of the Ministry of Education,
Southeast University,
Nanjing 210096, China
e-mail: xuzhdgyq@seu.edu.cn

Xiang-Cheng Zhang

School of Mechanics and Engineering Science,
Zhengzhou University,
Zhengzhou 450001, China

Ying-Qing Guo

Mechanical and Electronic Engineering School,
Nanjing Forestry University,
Nanjing 210037, China

Yong Lu

School of Engineering,
The University of Edinburgh,
Edinburgh EH9 3DW, UK

1Corresponding author.

Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received July 17, 2015; final manuscript received September 17, 2015; published online November 19, 2015. Assoc. Editor: Mohammed Daqaq.

J. Vib. Acoust 138(1), 011017 (Nov 19, 2015) (7 pages) Paper No: VIB-15-1269; doi: 10.1115/1.4031757 History: Received July 17, 2015; Revised September 17, 2015

Magnetorheological (MR) dampers are one of the most promising devices for mitigation of vibration of engineering structures due to earthquakes and wind excitation. In this paper, a compact two-column model of an MR fluid is proposed in order to formulate a general solution for calculation of the yield shear stress of an MR fluid. The magnetic induction intensity in the damping gap, which is the key parameter of the compact two-column model, is determined through simulation of the magnetic circuit of the MR damper. To verify the effectiveness and significance of the proposed model, damping forces calculated based on the proposed model and the traditional single-chain model are compared with the experimental data. Results show that the proposed compact two-column model is more accurate and that it can describe the rheological properties of the MR fluids very well.

Copyright © 2016 by ASME
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Fig. 2

Shear deformation of the dipoles

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Fig. 1

Magnetic particle distribution in the carrier liquid: (a) with no magnetic field and (b) with magnetic field

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Fig. 5

Schematic of the MR damper

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Fig. 3

Shear stress with varying angles

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Fig. 4

Yield shear stress with varying magnetic induction intensities

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Fig. 6

Meshing of the model

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Fig. 7

Contour of the magnetic induction intensity

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Fig. 8

Magnetic induction intensities of the damping gaps under different currents

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Fig. 9

Performance test of MR damper

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Fig. 10

Hysteresis curves under different currents (a), amplitudes (b), and frequencies (c)

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Fig. 11

Damping results comparison between experiment and the two models




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