US 4,924,976 A · Tuned array vibration absorber

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.

Claims14

Dependent claims

A tuned vibration absorber mounted to an object to damp vibrations of the object, comprising;

at least first and second layers of rigid material;
at least one layer of elastomer material between said at least two rigid layers to form a laminated constrained layer beam;
means for rapidly accelerating and decelerating the object;
and
a rigid base to support one end of said laminated constrained layer beam to form a cantilever constrained layer that vibrates at a predetermined resonance frequency, said base further securing said cantilever constrained layer beam to the object.

2 more elements

Dependencies are inferred from the claim text.

Tuned array vibration absorber

Life of this patent

Tuned array vibration absorber

Life of this patent

Abstract

Claims14