Tuned array vibration absorber

Details Tuned array vibration absorber Tuned array vibration absorber

1987-09-04

1990-05-15

Butler, Douglas C.

Brakes

Inertia of damping mass dissipates motion

267141, F16F 710

Patent

active

049249762

ABSTRACT:
A tuned vibration absorber comprises a laminated constrained layer beam formed from at least two rigid plates joined together by a layer of elastomer. One end of the laminated structure is mounted in a rigid base so that the laminated structure forms a cantilever constrained layer beam. The lamianted constrained beam is constructed so as to vibrate normal to the laminated structure at a resonance frequency that is to be dampened. The elastomer layer converts the vibrational kinetic energy into heat so that the heat can be removed. An array of tuned vibration absorbers is formed so as to damp a wide range of frequencies. The resonance frequencies of the tuned vibration absorbers are regularly spaced about the resonance frequency. The tuned array vibration absorber thus absorbs some of the vibrational kinetic energy and disperses the remainder over a wide range of frequencies to reduce the maximum amplitude of the vibrations that occur at any one frequency.

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"Vibration Damping Short Course Notes", from University of Dayton Research Institute.
"Response and Damping of a Simple Beam with Tuned Dampers", 42 Journal of the Acoustical Society of America No. 1, pp. 50-53, (Jul. 1967).

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