Characteristics of Band Gap and Low-Frequency Wave Propagation of Mechanically Tunable Phononic Crystals With Scatterers in Periodic Porous Elastomeric Matrices

doi:10.1115/1.4049516

	Characteristics of Band Gap and Low-Frequency Wave Propagation of Mechanically Tunable Phononic Crystals With Scatterers in Periodic Porous Elastomeric Matrices
	Ning Shaowu 3; Chu Dongyang 3; Yang Fengyuan 3; Jiang H(姜恒)1,2; Liu Zhanli 3; Zhuang Zhuo 3
刊名	JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
	2021-05-01
卷号	88 期号:5 页码:14
关键词	mechanically tunable phononic crystals scatterer periodic porous elastomeric matrix band structure directionality of wave propagation geometric and material nonlinearities wave propagation
ISSN号	0021-8936
DOI	10.1115/1.4049516
通讯作者	Jiang, Heng(hengjiang@imech.ac.cn) ; Liu, Zhanli(liuzhanli@tsinghua.edu.cn)
英文摘要	The characteristics of passive responses and fixed band gaps of phononic crystals (PnCs) limit their possible applications. For overcoming this shortcoming, a class of tunable PnCs comprised multiple scatterers and soft periodic porous elastomeric matrices are designed to manipulate the band structures and directionality of wave propagation through the applied deformation. During deformation, some tunable factors such as the coupling effect of scatterer and hole in the matrix, geometric and material nonlinearities, and the rearrangement of scatterer are activated by deformation to tune the dynamic responses of PnCs. The roles of these tunable factors in the manipulation of dynamic responses of PnCs are investigated in detail. The numerical results indicate that the tunability of the dynamic characteristic of PnCs is the result of the comprehensive function of these tunable factors mentioned earlier. The strong coupling effect between the hole in the matrix and the scatterer contributes to the formation of band gaps. The geometric nonlinearity of matrix and rearrangement of scatterer induced by deformation can simultaneously tune the band gaps and the directionality of wave propagation. However, the matrix's material nonlinearity only adjusts the band gaps of PnCs and does not affect the directionality of wave propagation in them. The research extends our understanding of the formation mechanism of band gaps of PnCs and provides an excellent opportunity for the design of the optimized tunable PnCs and acoustic metamaterials (AMMs).
分类号	一类/力学重要期刊
资助项目	Science Challenge Project[TZ2018002] ; National Natural Science Foundation of China[11972205] ; National Natural Science Foundation of China[11722218] ; National Key Research Development Program of China[2017YFB0702003] ; Tsinghua University Initiative Scientific Research Program
WOS研究方向	Mechanics
语种	英语
WOS记录号	WOS:000636827800001
资助机构	Science Challenge Project ; National Natural Science Foundation of China ; National Key Research Development Program of China ; Tsinghua University Initiative Scientific Research Program
其他责任者	Jiang, Heng ; Liu, Zhanli
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86437]
专题	力学研究所_国家微重力实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China; 3.Tsinghua Univ, Sch Aerosp Engn, Appl Mech Lab, Beijing 100084, Peoples R China;
推荐引用方式 GB/T 7714	Ning Shaowu,Chu Dongyang,Yang Fengyuan,et al. Characteristics of Band Gap and Low-Frequency Wave Propagation of Mechanically Tunable Phononic Crystals With Scatterers in Periodic Porous Elastomeric Matrices[J]. JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,2021,88(5):14.
APA	Ning Shaowu,Chu Dongyang,Yang Fengyuan,姜恒,Liu Zhanli,&Zhuang Zhuo.(2021).Characteristics of Band Gap and Low-Frequency Wave Propagation of Mechanically Tunable Phononic Crystals With Scatterers in Periodic Porous Elastomeric Matrices.JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,88(5),14.
MLA	Ning Shaowu,et al."Characteristics of Band Gap and Low-Frequency Wave Propagation of Mechanically Tunable Phononic Crystals With Scatterers in Periodic Porous Elastomeric Matrices".JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME 88.5(2021):14.