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Vibration control of magnetostrictive composite beams

Krishna Murty, AV and Anjanappa, M and Yuefei, Wu (1996) Vibration control of magnetostrictive composite beams. In: SPIE:Smart Structures and Materials 1996, Smart Structures and Integrated Systems, 26-29 February 1996, San Diego, CA, USA, pp. 482-491.

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With the availability of the magnetostrictive material, Terfenol-D, in particle form a new type of composite is emerging. One or more layers of Terfenol-D layers may be embedded in conventional fiber reinforced plastic composites. Utilizing the magnetostrictive property, the Terfenol-D layers can be used to introduce actuation forces. In this paper, we present investigations on vibration suppression of simply-supported and cantilevered magnetostrictive composite beams utilizing a thin embedded magnetostrictive layer to introduce actuation stresses. A velocity feedback, constant gain control law is used considering the beam as a distributed parameter system. The magnetostrictive composites can be tailored to meet a variety of requirements with regards to their vibration suppression capability, as there are a number of variables the designer can choose, such as, lay up sequence, location and thickness of the magnetostrictive layer, span length over which the coils enclose the magnetostrictive layers, coil radius and number of turns in a coil. Numerical results are presented to bring out the effect of such parameters on vibration suppression performance.

Item Type: Conference Paper
Publisher: International Society for Optical Engineering
Additional Information: Copyright of this article belongs to International Society for Optical Engineering.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 01 May 2007
Last Modified: 10 Jan 2012 07:09
URI: http://eprints.iisc.ac.in/id/eprint/10798

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