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Journal of Intelligent Material Systems and Structures
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A New MR Fluid-Elastomer Vibration Isolator

David York

Composite and Intelligent Materials Laboratory Department of Mechanical Engineering University of Nevada, Reno, Nevada 89557, USA

Xiaojie Wang

Composite and Intelligent Materials Laboratory Department of Mechanical Engineering University of Nevada, Reno, Nevada 89557, USA

Faramarz Gordaninejad

Composite and Intelligent Materials Laboratory Department of Mechanical Engineering University of Nevada, Reno, Nevada 89557, USA, faramarz{at}unr.edu

In this study, the performance of a new design concept utilizing a magnetorheological (MR) fluid composite material is examined through encapsulating a MR fluid into an elastomer. A prototype MR Fluid-Elastomer (MRF-E) Vibration Isolator is built and its dynamic behavior is studied in oscillatory compressions for a wide range of frequencies under various applied magnetic fields. The experimental results show that both the stiffness and the damping capability of the MRF-E Vibration Isolator is a function of the displacement amplitude and magnetic field strength, and only weakly dependent upon the frequency of excitation. This demonstrates that the new vibration isolator, whose mechanical properties can be controlled by an applied magnetic field, has potential in applications where tuning vibration characteristics are desired.

Key Words: magnetorheological • elastomer • vibration isolation.

Journal of Intelligent Material Systems and Structures, Vol. 18, No. 12, 1221-1225 (2007)
DOI: 10.1177/1045389X07083622
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