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A pedal that controls the damping of piano strings.



Related Terms

DAMPING

  1. The reduction of energy in a mechanical or electrical system by absorption or radiation. 2. The act of reducing the amplitude of the oscillations of an oscillatory system; hindering or pre- venting oscillation or vibration; diminishing the sharpness of resonance of the natural frequency of a system.

D DAMPENER

A device for damping spring oscillations after abrupt removal or application of a load.

DAMPING CAPACITY

A material's capability in absorbing vibrations. damping coefficient See resistance. damping constant See resistance.

DECREMENT GAGE

A type of molecular gage consisting of a vibrating quartz fiber whose damping is used to determine the viscosity and, thereby, the pressure of a gas. Also known as quartz-fiber manometer.

EQUIVALENT VISCOUS DAMPING

An assumed value of viscous damping used in analyzing a vibratory motion, such that the dissipation of energy per cycle at resonance is the same for the assumed or the actual damping force.

HYSTERESIS DAMPING

Damping of a vibration due to energy lost through mechanical hysteresis.

HYSTERETIC DAMPING

Damping of a vibrating system in which the retarding force is proportional to the velocity and inversely proportional to the frequency of the vibration.

INHERENT DAMPING

A method of vibration damping which makes use of the mechanical hysteresis of such materials as rubber, felt, and cork.

KENNEDY AND PANCU CIRCLE

For a harmonic oscillator subject to hysteretic damping and subjected to a sinusoidally varying force, a plot of the in-phase and quadrature components of the displacement of the oscillator as the frequency of the applied vibration is varied.

MECHANICAL HYGROMETER

A hygrometer in which an organic material, most commonly a bundle of human hair, which expands and contracts with changes in the moisture in the surrounding air or gas is held under slight tension gram arrangement. d r }mechanical damping by a spring, and a mechanical linkage actuates a pointer. mechanical lift dock

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