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Proceedings Paper

A magneto-rheological fluid damper for high-mobility multi-purpose wheeled vehicle (HMMWV)
Author(s): Umit Dogruer; Faramarz Gordaninejad; Cahit A. Evrensel
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Paper Abstract

This study focuses on the theoretical analysis, design, development and testing of a magneto-rheological fluid (MRF) damper for a high-mobility multi-purpose wheeled vehicle (HMMWV). A MRF damper is designed to provide an enhanced performance over the original equipment manufacturer (OEM) damper while keeping the geometric parameters, such as outer diameter and stroke, the same as the OEM damper. The theoretical analysis is developed using a fluid mechanics model and a three-dimensional electromagnetic finite element analysis. The MRF damper is designed as a fail-safe damper, which retains a minimum damping capacity in the event of a power supply or electronic system failure. The damper is designed to achieve non-symmetrical force characteristics, i.e., different force responses in rebound and compression. This is achieved by using shims. Experimental results show that the MRF damper for the HMMWV has an improved performance than the OEM damper. Theoretical and experimental results agree well and are presented for the force-displacement and force-velocity performance of the damper under different input motions, various input magnetic fields, and different MR fluids.

Paper Details

Date Published: 29 July 2004
PDF: 9 pages
Proc. SPIE 5386, Smart Structures and Materials 2004: Damping and Isolation, (29 July 2004); doi: 10.1117/12.540301
Show Author Affiliations
Umit Dogruer, Univ. of Nevada/Reno (United States)
Faramarz Gordaninejad, Univ. of Nevada/Reno (United States)
Cahit A. Evrensel, Univ. of Nevada/Reno (United States)

Published in SPIE Proceedings Vol. 5386:
Smart Structures and Materials 2004: Damping and Isolation
Kon-Well Wang, Editor(s)

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