Three-dimensional resonating metamaterials for low-frequency vibration attenuation

Abstract Recent advances in additive manufacturing have enabled fabrication of phononic crystals and metamaterials which exhibit spectral gaps, or stopbands, in which the propagation of elastic waves is prohibited by Bragg scattering or local resonance effects. Due to the high level of design freedo...

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Autores principales:	W. Elmadih, D. Chronopoulos, W. P. Syam, I. Maskery, H. Meng, R. K. Leach
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c75be4c84da943c4950325ef2a758624
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spelling	oai:doaj.org-article:c75be4c84da943c4950325ef2a7586242021-12-02T15:09:45ZThree-dimensional resonating metamaterials for low-frequency vibration attenuation10.1038/s41598-019-47644-02045-2322https://doaj.org/article/c75be4c84da943c4950325ef2a7586242019-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-47644-0https://doaj.org/toc/2045-2322Abstract Recent advances in additive manufacturing have enabled fabrication of phononic crystals and metamaterials which exhibit spectral gaps, or stopbands, in which the propagation of elastic waves is prohibited by Bragg scattering or local resonance effects. Due to the high level of design freedom available to additive manufacturing, the propagation properties of the elastic waves in metamaterials are tunable through design of the periodic cell. In this paper, we outline a new design approach for metamaterials incorporating internal resonators, and provide numerical and experimental evidence that the stopband exists over the irreducible Brillouin zone of the unit cell of the metamaterial (i.e. is a three-dimensional stopband). The targeted stopband covers a much lower frequency range than what can be realised through Bragg scattering alone. Metamaterials have the ability to provide (a) lower frequency stopbands than Bragg-type phononic crystals within the same design volume, and/or (b) comparable stopband frequencies with reduced unit cell dimensions. We also demonstrate that the stopband frequency range of the metamaterial can be tuned through modification of the metamaterial design. Applications for such metamaterials include aerospace and transport components, as well as precision engineering components such as vibration-suppressing platforms, supports for rotary components, machine tool mounts and metrology frames.W. ElmadihD. ChronopoulosW. P. SyamI. MaskeryH. MengR. K. LeachNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q W. Elmadih D. Chronopoulos W. P. Syam I. Maskery H. Meng R. K. Leach Three-dimensional resonating metamaterials for low-frequency vibration attenuation
description	Abstract Recent advances in additive manufacturing have enabled fabrication of phononic crystals and metamaterials which exhibit spectral gaps, or stopbands, in which the propagation of elastic waves is prohibited by Bragg scattering or local resonance effects. Due to the high level of design freedom available to additive manufacturing, the propagation properties of the elastic waves in metamaterials are tunable through design of the periodic cell. In this paper, we outline a new design approach for metamaterials incorporating internal resonators, and provide numerical and experimental evidence that the stopband exists over the irreducible Brillouin zone of the unit cell of the metamaterial (i.e. is a three-dimensional stopband). The targeted stopband covers a much lower frequency range than what can be realised through Bragg scattering alone. Metamaterials have the ability to provide (a) lower frequency stopbands than Bragg-type phononic crystals within the same design volume, and/or (b) comparable stopband frequencies with reduced unit cell dimensions. We also demonstrate that the stopband frequency range of the metamaterial can be tuned through modification of the metamaterial design. Applications for such metamaterials include aerospace and transport components, as well as precision engineering components such as vibration-suppressing platforms, supports for rotary components, machine tool mounts and metrology frames.
format	article
author	W. Elmadih D. Chronopoulos W. P. Syam I. Maskery H. Meng R. K. Leach
author_facet	W. Elmadih D. Chronopoulos W. P. Syam I. Maskery H. Meng R. K. Leach
author_sort	W. Elmadih
title	Three-dimensional resonating metamaterials for low-frequency vibration attenuation
title_short	Three-dimensional resonating metamaterials for low-frequency vibration attenuation
title_full	Three-dimensional resonating metamaterials for low-frequency vibration attenuation
title_fullStr	Three-dimensional resonating metamaterials for low-frequency vibration attenuation
title_full_unstemmed	Three-dimensional resonating metamaterials for low-frequency vibration attenuation
title_sort	three-dimensional resonating metamaterials for low-frequency vibration attenuation
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/c75be4c84da943c4950325ef2a758624
work_keys_str_mv	AT welmadih threedimensionalresonatingmetamaterialsforlowfrequencyvibrationattenuation AT dchronopoulos threedimensionalresonatingmetamaterialsforlowfrequencyvibrationattenuation AT wpsyam threedimensionalresonatingmetamaterialsforlowfrequencyvibrationattenuation AT imaskery threedimensionalresonatingmetamaterialsforlowfrequencyvibrationattenuation AT hmeng threedimensionalresonatingmetamaterialsforlowfrequencyvibrationattenuation AT rkleach threedimensionalresonatingmetamaterialsforlowfrequencyvibrationattenuation
_version_	1718387778421522432

Three-dimensional resonating metamaterials for low-frequency vibration attenuation

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