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Characteristics of Band Gap and Low-Frequency Wave Propagation of Mechanically Tunable Phononic Crystals With Scatterers in Periodic Porous Elastomeric Matrices
Ning Shaowu1; Chu Dongyang1; Yang Fengyuan1; Jiang H(姜恒)2,3; Liu Zhanli1; Zhuang Zhuo1
Corresponding AuthorJiang, Heng(hengjiang@imech.ac.cn) ; Liu, Zhanli(liuzhanli@tsinghua.edu.cn)
Source PublicationJOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
2021-05-01
Volume88Issue:5Pages:14
ISSN0021-8936
AbstractThe 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).
Keywordmechanically tunable phononic crystals scatterer periodic porous elastomeric matrix band structure directionality of wave propagation geometric and material nonlinearities wave propagation
DOI10.1115/1.4049516
Indexed BySCI ; EI
Language英语
WOS IDWOS:000636827800001
WOS Research AreaMechanics
WOS SubjectMechanics
Funding ProjectScience 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
Funding OrganizationScience Challenge Project ; National Natural Science Foundation of China ; National Key Research Development Program of China ; Tsinghua University Initiative Scientific Research Program
Classification一类/力学重要期刊
Ranking1
ContributorJiang, Heng ; Liu, Zhanli
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/86438
Collection微重力重点实验室
Affiliation1.Tsinghua Univ, Sch Aerosp Engn, Appl Mech Lab, Beijing 100084, Peoples R China;
2.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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.
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