Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation

doi:10.1155/2019/1894073

	Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation
	Liu Y(刘宇); Chen M(陈猛); Xu WS(徐文帅); Yang T(杨涛); Pei DL(裴东亮); Jiang H(姜恒); Wang YR(王育人)
刊名	SHOCK AND VIBRATION
	2019
页码	7
ISSN号	1070-9622
DOI	10.1155/2019/1894073
通讯作者	Chen, Meng(chenmeng@imech.ac.cn) ; Jiang, Heng(hengjiang@imech.ac.cn)
英文摘要	We construct new fractal acoustic metamaterials by coiling up space, which can allow subwavelength-scale and broadband sound insulation to be achieved. Using the finite element method and the S-parameter retrieval method, the band structures, the effective parameters, and the transmission losses of these acoustic metamaterials with different fractal orders are researched individually. The results illustrate that it is easy to form low-frequency bandgaps using these materials and thus achieve subwavelength-scale sound control. As the number of fractal orders increase, more bandgaps appear. In particular, in the X direction of the acoustic metamaterial lattice, more of these wide bandgaps appear in different frequency ranges, thus providing broadband sound insulation and showing promise for use in engineering applications.
分类号	Q3
资助项目	National Natural Science Foundation of China[11602269] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040301] ; Research Program of Beijing[Z161100002616034] ; Research Program of Beijing[Z171100000817010]
WOS研究方向	Acoustics ; Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000472911500001
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Research Program of Beijing
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79361]
专题	力学研究所_国家微重力实验室
推荐引用方式 GB/T 7714	Liu Y,Chen M,Xu WS,et al. Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation[J]. SHOCK AND VIBRATION,2019:7.
APA	刘宇.,陈猛.,徐文帅.,杨涛.,裴东亮.,...&王育人.(2019).Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation.SHOCK AND VIBRATION,7.
MLA	刘宇,et al."Fractal Acoustic Metamaterials with Subwavelength and Broadband Sound Insulation".SHOCK AND VIBRATION (2019):7.