A robust optimised multi-material 3D inkjet printed elastic metamaterial

Singleton, Lawrence; Cheer, Jordan; Bastola, Anil; Tuck, Christopher; Daley, Steve

doi:10.1016/j.apacoust.2023.109796

Journal article 218 views 51 downloads

A robust optimised multi-material 3D inkjet printed elastic metamaterial

Lawrence Singleton

, Jordan Cheer

, Anil Bastola, Christopher Tuck, Steve Daley

Applied Acoustics, Volume: 216, Start page: 109796

Swansea University Author: Anil Bastola

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DOI (Published version): 10.1016/j.apacoust.2023.109796

Abstract

This paper presents and validates a novel elastic metamaterial design, that is optimised for broadband robust vibration control of a structure in the presence of uncertainties, and realised using multi-material additive manufacturing. A novel concept resonator design that allows the resonance freque...

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Published in:	Applied Acoustics
ISSN:	0003-682X
Published:	Elsevier BV 2024
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa65773
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spelling	v2 65773 2024-03-05 A robust optimised multi-material 3D inkjet printed elastic metamaterial 6775d40c935b36b92058eb10d6454f1a Anil Bastola Anil Bastola true false 2024-03-05 MECH This paper presents and validates a novel elastic metamaterial design, that is optimised for broadband robust vibration control of a structure in the presence of uncertainties, and realised using multi-material additive manufacturing. A novel concept resonator design that allows the resonance frequency to be flexibly tuned via both geometrical and material property modifications is presented and characterised. A unit cell consisting of 12 of these resonators is then proposed. The resonance frequencies and damping ratios of this elastic metamaterial unit cell when attached to a parametrically uncertain example structure are then optimised using a Particle Swarm Optimisation to maximise the mean attenuation in kinetic energy of a structure with parametric uncertainties, based on an analytical model of the system. The performance of the optimised metamaterial is then validated experimentally, and it is shown that the realised metamaterial design is able to achieve a mean of 3.5 dB of broadband attenuation in the presence of uncertainties in the structure. In addition, in the presence of structural uncertainties the robustly optimised design achieves 0.5 dB greater mean attenuation than a design optimised on the nominal structural response alone, and reduced variation in attenuation for different levels of uncertainty. Journal Article Applied Acoustics 216 109796 Elsevier BV 0003-682X Vibration; Metamaterial; OptimisationMetaheuristics; Additive manufacturing 15 1 2024 2024-01-15 10.1016/j.apacoust.2023.109796 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University Another institution paid the OA fee 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). The authors acknowledge the use of the IRIDIS High Performance Computing Facility, and associated support services at the University of Southampton, in the completion of this work. 2024-04-25T16:21:45.4193312 2024-03-05T22:18:49.3971006 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Lawrence Singleton 0000-0001-9144-4114 1 Jordan Cheer 0000-0002-0552-5506 2 Anil Bastola 3 Christopher Tuck 4 Steve Daley 5 65773__30154__00f08edcb92a43c5a4e2d1836a2850a8.pdf 65773.VoR.pdf 2024-04-25T16:20:16.7713788 Output 1981080 application/pdf Version of Record true © 2023 The Author(s). This is an open access article under the CC BY license. true eng http://creativecommons.org/licenses/by/4.0/
title	A robust optimised multi-material 3D inkjet printed elastic metamaterial
spellingShingle	A robust optimised multi-material 3D inkjet printed elastic metamaterial Anil Bastola
title_short	A robust optimised multi-material 3D inkjet printed elastic metamaterial
title_full	A robust optimised multi-material 3D inkjet printed elastic metamaterial
title_fullStr	A robust optimised multi-material 3D inkjet printed elastic metamaterial
title_full_unstemmed	A robust optimised multi-material 3D inkjet printed elastic metamaterial
title_sort	A robust optimised multi-material 3D inkjet printed elastic metamaterial
author_id_str_mv	6775d40c935b36b92058eb10d6454f1a
author_id_fullname_str_mv	6775d40c935b36b92058eb10d6454f1a_***_Anil Bastola
author	Anil Bastola
author2	Lawrence Singleton Jordan Cheer Anil Bastola Christopher Tuck Steve Daley
format	Journal article
container_title	Applied Acoustics
container_volume	216
container_start_page	109796
publishDate	2024
institution	Swansea University
issn	0003-682X
doi_str_mv	10.1016/j.apacoust.2023.109796
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
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hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str	1
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description	This paper presents and validates a novel elastic metamaterial design, that is optimised for broadband robust vibration control of a structure in the presence of uncertainties, and realised using multi-material additive manufacturing. A novel concept resonator design that allows the resonance frequency to be flexibly tuned via both geometrical and material property modifications is presented and characterised. A unit cell consisting of 12 of these resonators is then proposed. The resonance frequencies and damping ratios of this elastic metamaterial unit cell when attached to a parametrically uncertain example structure are then optimised using a Particle Swarm Optimisation to maximise the mean attenuation in kinetic energy of a structure with parametric uncertainties, based on an analytical model of the system. The performance of the optimised metamaterial is then validated experimentally, and it is shown that the realised metamaterial design is able to achieve a mean of 3.5 dB of broadband attenuation in the presence of uncertainties in the structure. In addition, in the presence of structural uncertainties the robustly optimised design achieves 0.5 dB greater mean attenuation than a design optimised on the nominal structural response alone, and reduced variation in attenuation for different levels of uncertainty.
published_date	2024-01-15T16:21:44Z
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score	11.036684

A robust optimised multi-material 3D inkjet printed elastic metamaterial

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