Damping system for vibrating body

Details Damping system for vibrating body Damping system for vibrating body

1991-02-14

1991-12-31

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Magnetic fluid or material

188299, 188312, 188316, 188317, 188378, 18832222, 384 99, F16F 1503

Patent

active

050764039

ABSTRACT:
A viscous damper wherein the viscosity of a fluid, such as an oil, is used to generate damping effect when the fluid is passed through a restricted orifice or slit. Electrodes are arranged to face each other across the orifice or slit so that an electric field is created in a direction which is transverse to the direction of the fluid flow in the orifice or slit. The voltage applied to the electrodes is controlled in accordance with a frequency of vibration of a vibrating member to be damped. The viscosity of the fluid is controlled by applying a voltage thereto, so that a desired damping effect is obtained within a wide range of the frequency of the vibrating body.

REFERENCES:
patent: 3336818 (1967-08-01), Allen
patent: 4782919 (1988-11-01), Chalaire et al.
patent: 4973031 (1990-11-01), Takano et al.
patent: 4974706 (1990-12-01), Maji et al.
patent: 5000299 (1991-03-01), Goto et al.

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