The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus
There has been an explosion of interest in acoustic metamaterial in the last ten years. The tunable negative acoustic metamaterial is an important issue for designing metamaterials. The acoustic metamaterial is restricted by the narrow bandgap of sound waves for the local resonance of metamaterial u...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2018/4847036 |
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| author | Xiao-Le Yan Li-Mei Hao Mei-Ling Men Zhi Chen |
| author_facet | Xiao-Le Yan Li-Mei Hao Mei-Ling Men Zhi Chen |
| author_sort | Xiao-Le Yan |
| collection | DOAJ |
| description | There has been an explosion of interest in acoustic metamaterial in the last ten years. The tunable negative acoustic metamaterial is an important issue for designing metamaterials. The acoustic metamaterial is restricted by the narrow bandgap of sound waves for the local resonance of metamaterial unit cells. By shifting the sizes of the unit cell, the acoustic metamaterial could potentially overcome the limit of the narrow resonance frequency. In this research, we focus on the resonant behavior of split hollow sphere (SHS) in the waveguide. Firstly, we analyze the resonance characteristics of SHS and get an analytical formula for the effect of geometrical parameters on the resonance frequency. Furthermore, the resonance frequency of SHS is verified with finite-element method analysis based on COMSOL Multiphysics simulation. The results are in good agreement with theory model. It is observed that there is a blue shift of the resonance frequency with the gradual increase of the neck radius of SHS, a V-type response curve with the increase of inner radius of SHS, and a red shift with the increase of outer radius of SHS. Using the method of estimate of resonance, we could get a precisely controllable unit structure with negative effective modulus and offer a way to optimize the realization of double negative acoustic metamaterial. |
| format | Article |
| id | doaj-art-6aff6a0f97e94dbfa0f7b3edb636c7b5 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-6aff6a0f97e94dbfa0f7b3edb636c7b52025-02-03T06:01:36ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242018-01-01201810.1155/2018/48470364847036The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective ModulusXiao-Le Yan0Li-Mei Hao1Mei-Ling Men2Zhi Chen3Department of Applied Physics, Xi’an University of Science and Technology, Xi’an 710054, ChinaDepartment of Applied Physics, Xi’an University of Science and Technology, Xi’an 710054, ChinaDepartment of Applied Physics, Xi’an University of Science and Technology, Xi’an 710054, ChinaDepartment of Applied Physics, Northwestern Polytechnical University, Xi’an 710129, ChinaThere has been an explosion of interest in acoustic metamaterial in the last ten years. The tunable negative acoustic metamaterial is an important issue for designing metamaterials. The acoustic metamaterial is restricted by the narrow bandgap of sound waves for the local resonance of metamaterial unit cells. By shifting the sizes of the unit cell, the acoustic metamaterial could potentially overcome the limit of the narrow resonance frequency. In this research, we focus on the resonant behavior of split hollow sphere (SHS) in the waveguide. Firstly, we analyze the resonance characteristics of SHS and get an analytical formula for the effect of geometrical parameters on the resonance frequency. Furthermore, the resonance frequency of SHS is verified with finite-element method analysis based on COMSOL Multiphysics simulation. The results are in good agreement with theory model. It is observed that there is a blue shift of the resonance frequency with the gradual increase of the neck radius of SHS, a V-type response curve with the increase of inner radius of SHS, and a red shift with the increase of outer radius of SHS. Using the method of estimate of resonance, we could get a precisely controllable unit structure with negative effective modulus and offer a way to optimize the realization of double negative acoustic metamaterial.http://dx.doi.org/10.1155/2018/4847036 |
| spellingShingle | Xiao-Le Yan Li-Mei Hao Mei-Ling Men Zhi Chen The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus Advances in Condensed Matter Physics |
| title | The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus |
| title_full | The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus |
| title_fullStr | The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus |
| title_full_unstemmed | The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus |
| title_short | The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus |
| title_sort | effect of geometrical parameters on resonance characteristics of acoustic metamaterials with negative effective modulus |
| url | http://dx.doi.org/10.1155/2018/4847036 |
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