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Proceedings Paper

Nonlinear modeling and performance prediction of electrorheological fluid dampers
Author(s): Gopalakrishna M. Kamath; Norman M. Wereley
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Paper Abstract

A combined theoretical and experimental study of electrorheological (ER) fluid dampers is presented here. A moving electrode ER damper was built and tested for its dynamic characteristics for different electric field strengths and varying displacement amplitudes. Based upon the phenomenology observed in the experimental results, an augmented nonlinear model is proposed to describe the dynamic characteristics of the damper. The six model parameters are estimated from the experimental hysteresis data. The force versus displacement and force versus velocity hysteresis cycles are then reconstructed using these estimated parameters. The results show that the model captures the nonlinear damper behavior quite accurately. The importance of the various components in the model is illustrated.

Paper Details

Date Published: 9 May 1997
PDF: 11 pages
Proc. SPIE 3045, Smart Structures and Materials 1997: Passive Damping and Isolation, (9 May 1997); doi: 10.1117/12.274193
Show Author Affiliations
Gopalakrishna M. Kamath, Univ. of Maryland/College Park (United States)
Norman M. Wereley, Univ. of Maryland/College Park (United States)


Published in SPIE Proceedings Vol. 3045:
Smart Structures and Materials 1997: Passive Damping and Isolation
L. Porter Davis, Editor(s)

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