Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies
To realize a structure which can be conveniently tuned to multiple and wideband frequency ranges, a geometrical-stiffening membrane acoustic metamaterial (MAM) with individually tunable multiple frequencies is presented. The MAM is realized by a stacked arrangement of two membrane-magnet elements, e...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2021-03-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2877 |
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| _version_ | 1849708359569113088 |
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| author | Junjuan ZHAO Xianhui LI David THOMPSON Yueyue WANG Wenjiang WANG Liying ZHU Yunan LIU |
| author_facet | Junjuan ZHAO Xianhui LI David THOMPSON Yueyue WANG Wenjiang WANG Liying ZHU Yunan LIU |
| author_sort | Junjuan ZHAO |
| collection | DOAJ |
| description | To realize a structure which can be conveniently tuned to multiple and wideband frequency ranges, a geometrical-stiffening membrane acoustic metamaterial (MAM) with individually tunable multiple frequencies is presented. The MAM is realized by a stacked arrangement of two membrane-magnet elements, each of which has a membrane with a small piece of steel attached in the centre. It can be tuned individually by adjusting the position of its compact magnet. The normal incidence sound transmission loss of the MAM is investigated in detail by measurements in an impedance tube. The test sample results demonstrate that this structure can easily achieve a transmission loss with two peaks which can be shifted individually in a wide low-frequency range. A theoretical consideration is analysed, the analysis shows that the magnetic effect related to this distance leads to a nonlinear attractive force and, consequently, nonlinear geometrical stiffening in each membrane-magnet element, which allows the peaks to be shifted. A reasonable design can make the structure have a good application prospect for low-frequency noise insulation where there is a need to adjust the transmission loss according to the spectrum of the noise source. |
| format | Article |
| id | doaj-art-2bdf8bb7ee73406fa0765be235e1a93f |
| institution | DOAJ |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2021-03-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-2bdf8bb7ee73406fa0765be235e1a93f2025-08-20T03:15:39ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2021-03-0146110.24425/aoa.2021.136563Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-FrequenciesJunjuan ZHAO0Xianhui LI1David THOMPSON2Yueyue WANG3Wenjiang WANG4Liying ZHU5Yunan LIU6Beijing Municipal Institute of Labor ProtectionBeijing Municipal Institute of Labor ProtectionUniversity of SouthamptonBeijing Municipal Institute of Labor ProtectionBeijing Municipal Institute of Labor ProtectionBeijing Municipal Institute of Labor ProtectionBeijing Municipal Institute of Labor ProtectionTo realize a structure which can be conveniently tuned to multiple and wideband frequency ranges, a geometrical-stiffening membrane acoustic metamaterial (MAM) with individually tunable multiple frequencies is presented. The MAM is realized by a stacked arrangement of two membrane-magnet elements, each of which has a membrane with a small piece of steel attached in the centre. It can be tuned individually by adjusting the position of its compact magnet. The normal incidence sound transmission loss of the MAM is investigated in detail by measurements in an impedance tube. The test sample results demonstrate that this structure can easily achieve a transmission loss with two peaks which can be shifted individually in a wide low-frequency range. A theoretical consideration is analysed, the analysis shows that the magnetic effect related to this distance leads to a nonlinear attractive force and, consequently, nonlinear geometrical stiffening in each membrane-magnet element, which allows the peaks to be shifted. A reasonable design can make the structure have a good application prospect for low-frequency noise insulation where there is a need to adjust the transmission loss according to the spectrum of the noise source.https://acoustics.ippt.pan.pl/index.php/aa/article/view/2877membrane acoustic metamaterialnonlinear geometric stiffeninglow frequency tuningsound transmission |
| spellingShingle | Junjuan ZHAO Xianhui LI David THOMPSON Yueyue WANG Wenjiang WANG Liying ZHU Yunan LIU Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies Archives of Acoustics membrane acoustic metamaterial nonlinear geometric stiffening low frequency tuning sound transmission |
| title | Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies |
| title_full | Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies |
| title_fullStr | Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies |
| title_full_unstemmed | Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies |
| title_short | Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies |
| title_sort | analysis of a geometrical stiffening membrane acoustic metamaterial with individually tunable multi frequencies |
| topic | membrane acoustic metamaterial nonlinear geometric stiffening low frequency tuning sound transmission |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2877 |
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