Control of vibration in a plate using active acoustic black holes
Control of vibration in a plate using active acoustic black holes
Acoustic Black Holes (ABHs) have been shown to provide significant vibration damping in both beams and plates. Although effective, the performance of ABHs has been shown to be limited at lower frequencies, where the local modes of the ABH dominate the structural response. Previously, integrating active control into the taper of an ABH beam termination has been explored and the resulting active ABH (AABH) has been shown to perform very well; namely it has been shown that the reflection coefficient can be controlled almost perfectly over a broad range of frequencies. In this paper, active components have been integrated into ABHs embedded in a plate and a multichannel feedforward control strategy has been presented that can be used to control the global structural response of the plate. It has been shown that active control can be used to address the low frequency performance limit of the embedded AABHs which, combined with the passive damping provided by the ABH effect, demonstrates that AABHs can be used as an effective broadband vibration control solution. It has also been shown that the AABHs provide better coupling with the secondary sources, therefore reducing the energy required to implement active control.
Acoustic black hole, Active control, Feedforward, Plate, Vibration
Hook, Kristian
6c9b8a1f-84fe-4560-9138-89cf5e8f4c4b
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Daley, Stephen
53cef7f1-77fa-4a4c-9745-b6a0ba4f42e6
16 July 2021
Hook, Kristian
6c9b8a1f-84fe-4560-9138-89cf5e8f4c4b
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Daley, Stephen
53cef7f1-77fa-4a4c-9745-b6a0ba4f42e6
Hook, Kristian, Cheer, Jordan and Daley, Stephen
(2021)
Control of vibration in a plate using active acoustic black holes.
Carletti, Eleonora, Crocker, Malcolm, Pawelczyk, Marek and Tuma, Jiri
(eds.)
In "Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021.
vol. 17,
Springer.
8 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Acoustic Black Holes (ABHs) have been shown to provide significant vibration damping in both beams and plates. Although effective, the performance of ABHs has been shown to be limited at lower frequencies, where the local modes of the ABH dominate the structural response. Previously, integrating active control into the taper of an ABH beam termination has been explored and the resulting active ABH (AABH) has been shown to perform very well; namely it has been shown that the reflection coefficient can be controlled almost perfectly over a broad range of frequencies. In this paper, active components have been integrated into ABHs embedded in a plate and a multichannel feedforward control strategy has been presented that can be used to control the global structural response of the plate. It has been shown that active control can be used to address the low frequency performance limit of the embedded AABHs which, combined with the passive damping provided by the ABH effect, demonstrates that AABHs can be used as an effective broadband vibration control solution. It has also been shown that the AABHs provide better coupling with the secondary sources, therefore reducing the energy required to implement active control.
Text
Control_of_Vibration_using_AABHs
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Published date: 16 July 2021
Additional Information:
Funding Information:
This work was supported by an EPSRC iCASE studentship (Voucher number 16000058) and an EPSRC Prosperity Partnership (EP/S03661X/1).
Publisher Copyright:
© "Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021. All rights reserved.
Venue - Dates:
3rd International Conference on Acoustics and Vibration : Proceedings of the Third, Online?, Online, 2021-03-15 - 2021-03-16
Keywords:
Acoustic black hole, Active control, Feedforward, Plate, Vibration
Identifiers
Local EPrints ID: 450498
URI: http://eprints.soton.ac.uk/id/eprint/450498
ISSN: 2363-698X
PURE UUID: 8fc27850-1296-433e-a18c-89b9c57e7862
Catalogue record
Date deposited: 30 Jul 2021 16:31
Last modified: 24 Apr 2024 01:44
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Contributors
Author:
Kristian Hook
Editor:
Eleonora Carletti
Editor:
Malcolm Crocker
Editor:
Marek Pawelczyk
Editor:
Jiri Tuma
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