Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial
The acoustic characteristics of 2D single-oscillator, dual-oscillator, and triple-oscillator acoustic metamaterials were investigated based on concentric ring structures using the finite element method. For the single-oscillator, dual-oscillator, and triple-oscillator models investigated here, the d...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/1369858 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832552673154433024 |
|---|---|
| author | Meng Chen Dan Meng Heng Jiang Yuren Wang |
| author_facet | Meng Chen Dan Meng Heng Jiang Yuren Wang |
| author_sort | Meng Chen |
| collection | DOAJ |
| description | The acoustic characteristics of 2D single-oscillator, dual-oscillator, and triple-oscillator acoustic metamaterials were investigated based on concentric ring structures using the finite element method. For the single-oscillator, dual-oscillator, and triple-oscillator models investigated here, the dipolar resonances of the scatterer always induce negative effective mass density, preventing waves from propagating in the structure, thus forming the band gap. As the number of oscillators increases, relative movements between the oscillators generate coupling effect; this increases the number of dipolar resonance modes, causes negative effective mass density in more frequency ranges, and increases the number of band gaps. It can be seen that the number of oscillators in the cell is closely related to the number of band gaps due to the coupling effect, when the filling rate is of a certain value. |
| format | Article |
| id | doaj-art-e2629cf8376b4a9f940a0c277e40ecb0 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-e2629cf8376b4a9f940a0c277e40ecb02025-02-03T05:58:12ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/13698581369858Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic MetamaterialMeng Chen0Dan Meng1Heng Jiang2Yuren Wang3Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaThe acoustic characteristics of 2D single-oscillator, dual-oscillator, and triple-oscillator acoustic metamaterials were investigated based on concentric ring structures using the finite element method. For the single-oscillator, dual-oscillator, and triple-oscillator models investigated here, the dipolar resonances of the scatterer always induce negative effective mass density, preventing waves from propagating in the structure, thus forming the band gap. As the number of oscillators increases, relative movements between the oscillators generate coupling effect; this increases the number of dipolar resonance modes, causes negative effective mass density in more frequency ranges, and increases the number of band gaps. It can be seen that the number of oscillators in the cell is closely related to the number of band gaps due to the coupling effect, when the filling rate is of a certain value.http://dx.doi.org/10.1155/2018/1369858 |
| spellingShingle | Meng Chen Dan Meng Heng Jiang Yuren Wang Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial Shock and Vibration |
| title | Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial |
| title_full | Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial |
| title_fullStr | Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial |
| title_full_unstemmed | Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial |
| title_short | Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial |
| title_sort | investigation on the band gap and negative properties of concentric ring acoustic metamaterial |
| url | http://dx.doi.org/10.1155/2018/1369858 |
| work_keys_str_mv | AT mengchen investigationonthebandgapandnegativepropertiesofconcentricringacousticmetamaterial AT danmeng investigationonthebandgapandnegativepropertiesofconcentricringacousticmetamaterial AT hengjiang investigationonthebandgapandnegativepropertiesofconcentricringacousticmetamaterial AT yurenwang investigationonthebandgapandnegativepropertiesofconcentricringacousticmetamaterial |