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TECHNICAL PAPERS

Vibration Control of Beams Using Electro-Magnetic Compressional Damping Treatment

[+] Author and Article Information
J. Oh, S. Poh, M. Ruzzene, A. Baz

Mechanical Engineering Department, University of Maryland, College Park, MD 20742

J. Vib. Acoust 122(3), 235-243 (Jan 01, 2000) (9 pages) doi:10.1115/1.1303004 History: Received June 01, 1999; Revised January 01, 2000
Copyright © 2000 by ASME
Topics: Damping , Vibration
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References

Figures

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Concept of electro-magnetic damping treatment
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Geometry and deflections of the EMDT
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The storage modulus (a) and loss factor (b) of the viscoelastic material
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Experimental characteristics of EMDT of CC configuration (a) FRF and (b) control voltage
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Experimental characteristics of EMDT of CM configuration (a) FRF and (b) control voltage
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Spatial deflection of beam with CC configuration (a) first mode and (b) second mode
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Spatial deflection of beam with CM configuration (a) first mode and (b) second mode
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Contours of magnetic properties of EMDT with CC configuration (a) potential, (b) induction, (c) field and (d) force
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Contours of magnetic properties of EMDT with CM configuration (a) potential, (b) induction, (c) field and (d) force
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Theoretical characteristics of EMDT of CC configuration (a) FRF and (b) control voltage
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Theoretical characteristics of EMDT of CM configuration (a) FRF and (b) control voltage
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Comparison between theory and experiments with EMDT of CM (a) attenuation (percent) (b) control voltage and (c) damping ratio (ξ). (first mode: ▴ gain=1, ▴ gain=2, ▴ gain=3, second mode: • gain=1, • gain=2, • gain=3)
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Comparison between theory and experiments with EMDT of CM (a) attenuation (percent) (b) control voltage and (c) damping ratio (ξ). (First mode: ▴ gain=1, ▴ gain=2, ▴ gain=3, second mode: • gain=1, • gain=2, • gain=3)

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