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A novel approach to the design of hybrid anti-vibration mounts

A novel approach to the design of hybrid anti-vibration mounts
A novel approach to the design of hybrid anti-vibration mounts
Vibration isolation of aerospace structures that support high precision instrumentations demand a novel design approach. In order to create a design that is suitable for use in harsh environments with no risk of drift in alignment of the structure, the commonly used viscoelastic elements should ideally be eliminated. The novel isolator proposed here is a space-frame structure that is folded in on itself to act as a mechanical filter over a defined frequency range. The design uses a genetic algorithm based geometric optimisation routine to maximise passive vibration isolation hybridised with a geometric feasibility search. To complement the passive isolation, an active system is incorporated in the design which in effect adds damping to the system. The active-passive structure is shown to achieve transmissibility of about 19 dB over a range of 1-250 Hz. The design has no or little consequent weight and cost penalties whilst maintaining its effectiveness with the vibration levels. The results indicate the promise of a new breed of anti-vibration mounting design.
0957-4565
9-15
Moshrefi-Torbati, M.
65b351dc-7c2e-4a9a-83a4-df797973913b
Moshrefi-Torbati, M.
65b351dc-7c2e-4a9a-83a4-df797973913b

Moshrefi-Torbati, M. (2012) A novel approach to the design of hybrid anti-vibration mounts. Noise & Vibration Worldwide, 43 (9), 9-15. (doi:10.1260/0957-4565.43.9.9).

Record type: Article

Abstract

Vibration isolation of aerospace structures that support high precision instrumentations demand a novel design approach. In order to create a design that is suitable for use in harsh environments with no risk of drift in alignment of the structure, the commonly used viscoelastic elements should ideally be eliminated. The novel isolator proposed here is a space-frame structure that is folded in on itself to act as a mechanical filter over a defined frequency range. The design uses a genetic algorithm based geometric optimisation routine to maximise passive vibration isolation hybridised with a geometric feasibility search. To complement the passive isolation, an active system is incorporated in the design which in effect adds damping to the system. The active-passive structure is shown to achieve transmissibility of about 19 dB over a range of 1-250 Hz. The design has no or little consequent weight and cost penalties whilst maintaining its effectiveness with the vibration levels. The results indicate the promise of a new breed of anti-vibration mounting design.

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More information

Published date: 14 November 2012
Organisations: Mechatronics

Identifiers

Local EPrints ID: 345273
URI: http://eprints.soton.ac.uk/id/eprint/345273
ISSN: 0957-4565
PURE UUID: 81a6463e-9e87-410f-bcb6-24dbad2fce34

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Date deposited: 15 Nov 2012 13:56
Last modified: 14 Mar 2024 12:23

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