Interface for vibration reduction in structural-dynamic systems

Details Interface for vibration reduction in structural-dynamic systems Interface for vibration reduction in structural-dynamic systems

1996-07-25

1998-06-16

Young, Lee W.

Spring devices

Resilient shock or vibration absorber

2671402, 188267, 52 1, F16M 100

Patent

active

057658170

ABSTRACT:
An interface (3) for vibration reduction in structural-dynamic systems comprises a base-side construction element (8) and a structure-side construction element (9) and at least one actuator (14), for example a piezoelectric or a magnetostrictive actuator. The actuator (14) has a main direction (17), and the extension of the actuator (14) in its main direction (17) between a first engagement point (15) on the base-side construction element (8) and a second engagement point (16) on the structure-side construction element (9) can be voluntarily changed by means of a drive signal. Therein, the actuator (14) is under pressure prestress between the first engagement point (15) and the second engagement point (16), and at least one elastic element (18) is arranged in parallel to the actuator (14) between the base-side construction element (8) and the structure-side construction element (9), the elastic element (18) having a longitudinal stiffness parallel to the main direction (17) of the actuator (14) which is as low as possible, and a transversal stiffness perpendicular to the main direction (17) of the actuator (14) which is as high as possible.

REFERENCES:
patent: 4848525 (1989-07-01), Jacot et al.
patent: 5236186 (1993-08-01), Weltin et al.
patent: 5373670 (1994-12-01), Sasaki et al.
Patent Abstracts of Japan, vol. 014, No. 033 (M-923), 22 Jan. 1990 & JP 01 269736, (Mitsubishi) 27 Oct. 1989.
Patent Abstracts of Japan, vol. 013, No. 385 (M-864), 25 Aug. 1989 & JP 01 135943 (Hitachi) 29 May 1989.

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