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Proceedings Paper

A magneto-rheological fluid-elastomer vibration isolator
Author(s): Xiaojie Wang; Faramarz Gordaninejad; Gregory Hitchcock
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Paper Abstract

A magneto-rheological (MR) fluid-elastomer vibration isolator is constructed by encapsulating a MR fluid inside an elastomer. The structural properties of this system are controllable by an applied magnetic field. Previous studies have shown that the damping capacity of this MR fluid-elastomer vibration isolator is a function of strain amplitude and field strength, and weakly dependent on the excitation frequency. The energy-dissipated mode, subjected to a magnetic field during oscillatory motion, is similar to a combined viscous and frictional damping. In this paper, a mechanical model is presented to account for the dynamic behavior of the MR fluid-elastomer vibration isolators under oscillatory compressive deformations. This model is a two-element analogy comprised of a variable friction damper and a nonlinear spring. The parameters of the model have been identified by a series of harmonic loading tests. The theoretical and experimental results are in excellent agreement.

Paper Details

Date Published: 16 May 2005
PDF: 9 pages
Proc. SPIE 5760, Smart Structures and Materials 2005: Damping and Isolation, (16 May 2005); doi: 10.1117/12.600533
Show Author Affiliations
Xiaojie Wang, Univ. of Nevada/Reno (United States)
Faramarz Gordaninejad, Univ. of Nevada/Reno (United States)
Gregory Hitchcock, Advanced Materials and Devices, Inc. (United States)

Published in SPIE Proceedings Vol. 5760:
Smart Structures and Materials 2005: Damping and Isolation
Kon-Well Wang, Editor(s)

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