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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)
发表期刊SHOCK AND VIBRATION
2018
页码10.1155/2018/1369858
ISSN1070-9622
摘要

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
收录类别SCI ; EI
语种英语
WOS记录号WOS:000424359100001
关键词[WOS]Phononic Crystals ; Mass Density ; Composites ; Scattering ; Waves
WOS研究方向Acoustics ; Engineering ; Mechanics
WOS类目Acoustics ; Engineering, Mechanical ; Mechanics
项目资助者National Natural Science Foundation of China(11202211 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040301) ; Research Program of Beijing(Z161100002616034 ; 11602269) ; Z171100000817010)
论文分区二类
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77461
专题国家微重力实验室
通讯作者Jiang H(姜恒); Wang YR(王育人)
推荐引用方式
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 Chen M,Meng D,Jiang H,&Wang YR.(2018).Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial.SHOCK AND VIBRATION,10.1155/2018/1369858.
MLA Chen M,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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