Limits of slow sound propagation and transparency in lossy, locally resonant periodic structures
We investigate sound propagation in lossy, locally resonant periodic structures by studying an air-filled tube periodically loaded with Helmholtz resonators and taking into account the intrinsic viscothermal losses. In particular, by tuning the resonator with the Bragg gap in this prototypical local...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/16/9/093017 |
| _version_ | 1797751126035005440 |
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| author | G Theocharis O Richoux V Romero García A Merkel V Tournat |
| author_facet | G Theocharis O Richoux V Romero García A Merkel V Tournat |
| author_sort | G Theocharis |
| collection | DOAJ |
| description | We investigate sound propagation in lossy, locally resonant periodic structures by studying an air-filled tube periodically loaded with Helmholtz resonators and taking into account the intrinsic viscothermal losses. In particular, by tuning the resonator with the Bragg gap in this prototypical locally resonant structure, we study the limits and various characteristics of slow sound propagation. While in the lossless case the overlapping of the gaps results in slow-sound-induced transparency of a narrow frequency band surrounded by a strong and broadband gap, the inclusion of the unavoidable losses imposes limits to the slowdown factor and the maximum transmission. Experiments, theory, and finite element simulations have been used for the characterization of acoustic wave propagation by tuning the Helmholtz/Bragg frequencies and the total amount of loss both for infinite and finite lattices. This study contributes to the field of locally resonant acoustic metamaterials and slow sound applications. |
| first_indexed | 2024-03-12T16:43:56Z |
| format | Article |
| id | doaj.art-cf118b838a2942f5ab9449dcd12c4998 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:43:56Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-cf118b838a2942f5ab9449dcd12c49982023-08-08T14:20:58ZengIOP PublishingNew Journal of Physics1367-26302014-01-0116909301710.1088/1367-2630/16/9/093017Limits of slow sound propagation and transparency in lossy, locally resonant periodic structuresG Theocharis0O Richoux1V Romero García2A Merkel3V Tournat4LUNAM Université, Université du Maine , CNRS, LAUM UMR 6613, Avenue O. Messiaen, 72085 Le Mans, FranceLUNAM Université, Université du Maine , CNRS, LAUM UMR 6613, Avenue O. Messiaen, 72085 Le Mans, FranceLUNAM Université, Université du Maine , CNRS, LAUM UMR 6613, Avenue O. Messiaen, 72085 Le Mans, FranceLUNAM Université, Université du Maine , CNRS, LAUM UMR 6613, Avenue O. Messiaen, 72085 Le Mans, FranceLUNAM Université, Université du Maine , CNRS, LAUM UMR 6613, Avenue O. Messiaen, 72085 Le Mans, FranceWe investigate sound propagation in lossy, locally resonant periodic structures by studying an air-filled tube periodically loaded with Helmholtz resonators and taking into account the intrinsic viscothermal losses. In particular, by tuning the resonator with the Bragg gap in this prototypical locally resonant structure, we study the limits and various characteristics of slow sound propagation. While in the lossless case the overlapping of the gaps results in slow-sound-induced transparency of a narrow frequency band surrounded by a strong and broadband gap, the inclusion of the unavoidable losses imposes limits to the slowdown factor and the maximum transmission. Experiments, theory, and finite element simulations have been used for the characterization of acoustic wave propagation by tuning the Helmholtz/Bragg frequencies and the total amount of loss both for infinite and finite lattices. This study contributes to the field of locally resonant acoustic metamaterials and slow sound applications.https://doi.org/10.1088/1367-2630/16/9/093017slow soundacoustic metamaterialslossy periodic structures43.20.Mv43.20.Hq43.20.Fn |
| spellingShingle | G Theocharis O Richoux V Romero García A Merkel V Tournat Limits of slow sound propagation and transparency in lossy, locally resonant periodic structures New Journal of Physics slow sound acoustic metamaterials lossy periodic structures 43.20.Mv 43.20.Hq 43.20.Fn |
| title | Limits of slow sound propagation and transparency in lossy, locally resonant periodic structures |
| title_full | Limits of slow sound propagation and transparency in lossy, locally resonant periodic structures |
| title_fullStr | Limits of slow sound propagation and transparency in lossy, locally resonant periodic structures |
| title_full_unstemmed | Limits of slow sound propagation and transparency in lossy, locally resonant periodic structures |
| title_short | Limits of slow sound propagation and transparency in lossy, locally resonant periodic structures |
| title_sort | limits of slow sound propagation and transparency in lossy locally resonant periodic structures |
| topic | slow sound acoustic metamaterials lossy periodic structures 43.20.Mv 43.20.Hq 43.20.Fn |
| url | https://doi.org/10.1088/1367-2630/16/9/093017 |
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