Acoustic metamaterials with controllable bandgap gates based on magnetorheological elastomers

Gorshkov, Vyacheslav N.; Bereznykov, Oleksii V.; Boiger, Gernot K.; Sareh, Pooya; Fallah, Arash S.

doi:10.1016/j.ijmecsci.2022.107829

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-25946

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Acoustic metamaterials with controllable bandgap gates based on magnetorheological elastomers
Authors:	Gorshkov, Vyacheslav N. Bereznykov, Oleksii V. Boiger, Gernot K. Sareh, Pooya Fallah, Arash S.
et. al:	No
DOI:	10.1016/j.ijmecsci.2022.107829 10.21256/zhaw-25946
Published in:	International Journal of Mechanical Sciences
Volume(Issue):	238
Issue:	107829
Issue Date:	Oct-2022
Publisher / Ed. Institution:	Elsevier
ISSN:	0020-7403
Language:	English
Subjects:	Acoustic metamaterial; Active filtering; Core-shell structure; Controlling pass-/stop- band; Magnetoelastomer
Subject (DDC):	530: Physics
Abstract:	Acoustic metamaterials allow for creating selective pass- and stop-bands on the frequency spectrum. We demonstrate the possibility of designing acoustic metamaterials as core-shell 2D-phononic media with an extremely simple morphology, the frequency spectrum of which contains many real-time tunable bandgaps. The connected shells of such metamaterials form a grid with square cells filled with nuclei partitionable into two subsystems. Both subsystems are characterized by their frequency spectra, and it is the coupling between them that generates the bandgaps. If the structural elements of the metamaterial are built based on magnetoelastomers, then bandgaps can be easily controlled by an external magnetic field that changes the elastic moduli of shells/cores. We have shown the possibility of manipulating single bandgaps in different parts of the spectrum, and simultaneous control of all bandgaps up to their complete disappearance. This manipulation can be carried out, specifically, with no change in the maximum achievable frequency in the metamaterial. The results obtained can be used for selective filtering of damaging wave components, active control of seismic or blast waves, sonar systems, ultrasound imaging, impact-resistant structures, and noise cancellation protocols. The physical concepts developed are extendable to 3D-structures in a similar fashion so can benefit a wider community.
URI:	https://digitalcollection.zhaw.ch/handle/11475/25946
Fulltext version:	Published version
License (according to publishing contract):	CC BY 4.0: Attribution 4.0 International
Departement:	School of Engineering
Organisational Unit:	Institute of Computational Physics (ICP)
Appears in collections:	Publikationen School of Engineering

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Gorshkov, V. N., Bereznykov, O. V., Boiger, G. K., Sareh, P., & Fallah, A. S. (2022). Acoustic metamaterials with controllable bandgap gates based on magnetorheological elastomers. International Journal of Mechanical Sciences, 238(107829). https://doi.org/10.1016/j.ijmecsci.2022.107829

Gorshkov, V.N. et al. (2022) ‘Acoustic metamaterials with controllable bandgap gates based on magnetorheological elastomers’, International Journal of Mechanical Sciences, 238(107829). Available at: https://doi.org/10.1016/j.ijmecsci.2022.107829.

V. N. Gorshkov, O. V. Bereznykov, G. K. Boiger, P. Sareh, and A. S. Fallah, “Acoustic metamaterials with controllable bandgap gates based on magnetorheological elastomers,” International Journal of Mechanical Sciences, vol. 238, no. 107829, Oct. 2022, doi: 10.1016/j.ijmecsci.2022.107829.

GORSHKOV, Vyacheslav N., Oleksii V. BEREZNYKOV, Gernot K. BOIGER, Pooya SAREH und Arash S. FALLAH, 2022. Acoustic metamaterials with controllable bandgap gates based on magnetorheological elastomers. International Journal of Mechanical Sciences. Oktober 2022. Bd. 238, Nr. 107829. DOI 10.1016/j.ijmecsci.2022.107829

Gorshkov, Vyacheslav N., Oleksii V. Bereznykov, Gernot K. Boiger, Pooya Sareh, and Arash S. Fallah. 2022. “Acoustic Metamaterials with Controllable Bandgap Gates Based on Magnetorheological Elastomers.” International Journal of Mechanical Sciences 238 (107829). https://doi.org/10.1016/j.ijmecsci.2022.107829.

Gorshkov, Vyacheslav N., et al. “Acoustic Metamaterials with Controllable Bandgap Gates Based on Magnetorheological Elastomers.” International Journal of Mechanical Sciences, vol. 238, no. 107829, Oct. 2022, https://doi.org/10.1016/j.ijmecsci.2022.107829.