We discuss here the design of a new suspension for Weber‐type gravitational wave antennas. The suspension consists of cantilever beams and operates as a mechanical filter for the external mechanical noise. The attenuation of the filter and the stresses applied on the antenna are computed and verified experimentally. When the filter is optimized, the attenuation depends on the value of an angular frequency, ωc, characteristic of the material of the beams. Attenuation of the order of 10−6–10−7 can be obtained at 1 KHz for a 1000‐kg antenna using materials with good anelastic behavior such as Al 5056 and Ti 64.

Mechanical filter for the suspension of gravitational wave antennas

COCCIA E
1982

Abstract

We discuss here the design of a new suspension for Weber‐type gravitational wave antennas. The suspension consists of cantilever beams and operates as a mechanical filter for the external mechanical noise. The attenuation of the filter and the stresses applied on the antenna are computed and verified experimentally. When the filter is optimized, the attenuation depends on the value of an angular frequency, ωc, characteristic of the material of the beams. Attenuation of the order of 10−6–10−7 can be obtained at 1 KHz for a 1000‐kg antenna using materials with good anelastic behavior such as Al 5056 and Ti 64.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/1675
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