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Proceedings Paper

Controllable-stiffness components based on magnetorheological elastomers
Author(s): John M. Ginder; Mark E. Nichols; Larry D. Elie; Seamus M. Clark
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Paper Abstract

So-called magnetorheological (MR) elastomers, comprising rubbery polymers loaded with magnetizable particles that are aligned in a magnetic field, possess dynamic stiffness and damping that can subsequently be controlled by applied fields. Tunable automotive bushings and mounts incorporating these materials and an embedded magnetic field source have been constructed. In this article, the response of these components to dynamic mechanical loading is described. They behave essentially as elastomeric springs with stiffness and damping that is increased by tens of percent with an applied electrical current. Their time of response to a change in current is less than ten milliseconds. In addition to a tunable spring or force generator, these components may also serve as deflection sensors.

Paper Details

Date Published: 22 June 2000
PDF: 8 pages
Proc. SPIE 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems, (22 June 2000); doi: 10.1117/12.388844
Show Author Affiliations
John M. Ginder, Ford Motor Co. (United States)
Mark E. Nichols, Ford Motor Co. (United States)
Larry D. Elie, Ford Motor Co. (United States)
Seamus M. Clark, Ford Motor Co. (United States)

Published in SPIE Proceedings Vol. 3985:
Smart Structures and Materials 2000: Smart Structures and Integrated Systems
Norman M. Wereley, Editor(s)

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