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Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial
Chen M(陈猛); Meng D(蒙丹); Jiang H(姜恒); Wang YR(王育人)
Source PublicationSHOCK AND VIBRATION
2018
Pages10.1155/2018/1369858
ISSN1070-9622
Abstract

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.

DOI10.1155/2018/1369858
Indexed BySCI ; EI
Language英语
WOS IDWOS:000424359100001
WOS KeywordPhononic Crystals ; Mass Density ; Composites ; Scattering ; Waves
WOS Research AreaAcoustics ; Engineering ; Mechanics
WOS SubjectAcoustics ; Engineering, Mechanical ; Mechanics
Funding OrganizationNational Natural Science Foundation of China(11202211 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040301) ; Research Program of Beijing(Z161100002616034 ; 11602269) ; Z171100000817010)
Classification二类
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77461
Collection国家微重力实验室
Recommended Citation
GB/T 7714
Chen M,Meng D,Jiang H,et al. Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial[J]. SHOCK AND VIBRATION,2018:10.1155/2018/1369858.
APA 陈猛,蒙丹,姜恒,&王育人.(2018).Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial.SHOCK AND VIBRATION,10.1155/2018/1369858.
MLA 陈猛,et al."Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial".SHOCK AND VIBRATION (2018):10.1155/2018/1369858.
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