Designing a tuned-shunt electrodynamic metamaterial in the presence of uncertainties
Designing a tuned-shunt electrodynamic metamaterial in the presence of uncertainties
Resonant structural vibrations are a common source of disruptive noise, and suppressing these vibrations is often the most direct way to reduce the noise levels. Elastic metamaterials (EMMs) consist of distributed resonant substructures, at a scale which is small compared to the wavelength of vibration. This allows these materials to be used in applications where space is limited, and more traditional vibration suppression techniques would be impractical. Tuned resonators can be designed through selection of geometry or material properties, but an alternative approach, which requires significantly less prototyping, is through the use of shunted electrodynamic inertial actuators. In this paper, a novel electrodynamic metamaterial (EDMM) is proposed consisting of an array of mass-produced inertial actuators, each connected to a tuned shunt impedance. It is considered impractical to measure the dynamic and electrical parameters of a large number of actuators, and so the effect of uncertainties in the actuators is investigated on both the performance and the stability of the EDMM.
970 - 1944
Singleton, Lawrence
b7b7fbb9-2469-4774-8572-31a016b7e5ac
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Daley, Stephen
53cef7f1-77fa-4a4c-9745-b6a0ba4f42e6
29 July 2021
Singleton, Lawrence
b7b7fbb9-2469-4774-8572-31a016b7e5ac
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Daley, Stephen
53cef7f1-77fa-4a4c-9745-b6a0ba4f42e6
Singleton, Lawrence, Cheer, Jordan and Daley, Stephen
(2021)
Designing a tuned-shunt electrodynamic metamaterial in the presence of uncertainties.
Internoise 2021, , Washington, D.C., United States.
01 - 05 Aug 2021.
.
(doi:10.3397/IN-2021-1769).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Resonant structural vibrations are a common source of disruptive noise, and suppressing these vibrations is often the most direct way to reduce the noise levels. Elastic metamaterials (EMMs) consist of distributed resonant substructures, at a scale which is small compared to the wavelength of vibration. This allows these materials to be used in applications where space is limited, and more traditional vibration suppression techniques would be impractical. Tuned resonators can be designed through selection of geometry or material properties, but an alternative approach, which requires significantly less prototyping, is through the use of shunted electrodynamic inertial actuators. In this paper, a novel electrodynamic metamaterial (EDMM) is proposed consisting of an array of mass-produced inertial actuators, each connected to a tuned shunt impedance. It is considered impractical to measure the dynamic and electrical parameters of a large number of actuators, and so the effect of uncertainties in the actuators is investigated on both the performance and the stability of the EDMM.
Text
Inter-Noise_Paper_EffectofUncertaintyEDMM_v3
More information
Published date: 29 July 2021
Additional Information:
Funding Information:
This research was partially supported by an EPRSC iCASE studentship (Voucher number 17100092) and the Intelligent Structures for Low Noise Environments (ISLNE) EPSRC Prosperity Partnership (EP/S03661X/1).
Publisher Copyright:
© INTER-NOISE 2021 .All right reserved.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Venue - Dates:
Internoise 2021, , Washington, D.C., United States, 2021-08-01 - 2021-08-05
Identifiers
Local EPrints ID: 452157
URI: http://eprints.soton.ac.uk/id/eprint/452157
PURE UUID: 8d43350b-38c3-42bc-9fab-8ad7903d4f45
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Date deposited: 26 Nov 2021 00:08
Last modified: 17 Mar 2024 03:23
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