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Proceedings Paper

Investigation on dynamic coupling between stay cable and magneto-rheological fluid (MR) damper
Author(s): Min Liu; H. Li; X. Ch.. Guan; J. H. Li; J. P. Ou
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Paper Abstract

In this paper, experimental investigation on vibration control is carried out on a stay cable model incorporated with one small size magnetorheological fluid (MR) damper. The control efficiency of the MR dampers to reduce the cable vibration under sinusoidal excitation using passive control strategy is firstly tested. The dynamic coupling between the cable and MR damper with the passive control strategy is obviously observed. Dynamic coupling models between stay cable and MR damper with constant and fluctuating current input are proposed respectively. The proposed dynamic coupling model corresponding to the MR damper with constant current input is validated by the numerical simulations of the measured experimental data. Furthermore, using the proposed dynamic coupling corresponding to the MR damper with fluctuating current input, experimental investigation on the cable vibration control subjected to sinusoidal excitation using semi-active control strategy is then conducted. Experimental results demonstrate that the semi-active MR damper can achieve much better mitigation efficacy than the passive MR dampers with different constant current inputs due to negative stiffness provided by the semi-active MR damper.

Paper Details

Date Published: 30 March 2009
PDF: 8 pages
Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72923Z (30 March 2009); doi: 10.1117/12.817681
Show Author Affiliations
Min Liu, Harbin Institute of Technology (China)
H. Li, Harbin Institute of Technology (China)
X. Ch.. Guan, Harbin Institute of Technology (China)
J. H. Li, Dalian Univ. of Technology (China)
J. P. Ou, Harbin Institute of Technology (China)
Dalian Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7292:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009
Masayoshi Tomizuka, Editor(s)

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