Adaptively tuned elastomeric vibration absorber

Details Adaptively tuned elastomeric vibration absorber Adaptively tuned elastomeric vibration absorber

1997-12-09

1999-07-20

Ramirez, Ramon O.

Supports

With condition responsive control means

188380, F16M 1300

Patent

active

059246707

ABSTRACT:
An apparatus for reducing vibration has a mount for attaching to a vibrating body, such as the frame of an aircraft. A plate is spaced from the mount with a mass there between. A first elastomeric ring is compressed between the mass and the mount, and a second elastomeric ring is compressed between the mass and the plate. The rings act as a spring having a stiffness that defines a resonant frequency at which the mass oscillates. Vibration in the body is reduced by the mass movement absorbing vibrational energy and the energy absorption is maximized when the mass resonates at the vibration frequency. A controller senses body vibration and operates a mechanism that alters the spacing between the mount and the plate thereby adjusting the spring stiffness. The stiffness of the spring is changed until the resonant frequency of the mass is tuned to the vibration frequency of the body.

REFERENCES:
patent: 4346793 (1982-08-01), Fuse et al.
patent: 5456341 (1995-10-01), Garnjost et al.
patent: 5695027 (1997-12-01), Von Flotow et al.

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