A Tunable Vibration Isolator Using a Magnetorheological Elastomer With a Field Induced Modulus Bias

Authors

Saul Opie, University of Nevada, Las VegasFollow
Woosoon Yim, University of Nevada, Las VegasFollow

Document Type

Conference Proceeding

Publication Date

11-11-2007

Publication Title

ASME International Mechanical Engineering Congress and Exposition, Proceedings,ASME

Publisher

ASME

Volume

10

Issue

Parts A and B

First page number:

99

Last page number:

104

Abstract

Magnetorheological Elastomers (MRE) are composed of a ferromagnetic filler, micron sized iron particles, in an elastomer matrix. When a magnetic field is applied to an MRE, the iron particles develop a dipole interaction energy, which results in the material displaying a field dependent modulus. MRE materials have received attention in the last decade due in part to their potential application in semi-active vibration isolators. However, compared to MR fluid dampers, few applications of MRE materials have been developed, and no commercial devices are available. This paper describes the development of an MRE based isolator. Unique to this design is the introduction of a field induced modulus bias via a permanent magnet, which can be offset with a current input to the electromagnetic control coil. If the field bias is not significant enough to saturate the iron particles then an appropriately directed input current can also further increase the field induced modulus. Such a Biased Magnetorheological Elastomer (B-MRE) could be useful for applications where the designer wishes to decrease the system stiffness, something that has not been addressed by other MRE based devices.

Keywords

Damping (Mechanics) – Equipment and supplies; Elastomers; Magnetic materials; Vibration isolators

Disciplines

Materials Science and Engineering | Mechanical Engineering | Mechanics of Materials

Language

English

Comments

Conference Held: Seattle, Washington, USA, November 11–15, 2007

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Opie, S., Yim, W. (2007). A Tunable Vibration Isolator Using a Magnetorheological Elastomer With a Field Induced Modulus Bias. ASME International Mechanical Engineering Congress and Exposition, Proceedings,ASME, 10(Parts A and B), 99-104. ASME.