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Wave Propagation Through a Micropolar Slab Sandwiched by Two Elastic Half-Spaces
Zhang P; Wei PJ(魏培君); Li YQ; Wei, PJ (reprint author), Univ Sci & Technol Beijing, Dept Appl Mech, Beijing 100083, Peoples R China.
Source PublicationJOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
2016
Volume138Issue:4Pages:41008
ISSN1048-9002
AbstractThe problem of wave propagation through a micropolar elastic slab sandwiched by two classical elastic half-spaces is studied in this paper. Different from the classical elastic solids, the particle in micropolar solids can bear not only the displacements but also the rotations. The additional kinetic freedom results in four kinds of wave modes, namely, the longitudinal displacement (LD) wave, the longitudinal microrotational (LR) wave, and two coupled transverse (CT) waves. Apart from the LD wave, the other three waves are dispersive. The existence of couple stresses and the microrotations also makes the interface conditions between the micropolar slab and the classic elastic half-spaces different from that between two classic solids. The nontraditional interface conditions lead to a set of algebraic equations from which the amplitude ratios of reflection and transmission waves can be determined. Further, the energy fluxes carried by various waves are evaluated and the energy conservation is checked to validate the numerical results obtained. The influences of the micropolar elastic constants and the thickness of slab are discussed based on the numerical results. Two situations of incident P wave and incident SH wave are both considered.
KeywordMicropolar Elasticity Sandwiched Slab Reflection Transmission Energy Flux
DOI10.1115/1.4033198
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000379590800008
WOS Keywordmicropolar elasticity ; sandwiched slab ; reflection ; transmission ; energy flux
WOS Research AreaAcoustics ; Engineering ; Mechanics
WOS SubjectAcoustics ; Engineering, Mechanical ; Mechanics
Funding OrganizationThe work was supported by Fundamental Research Funds for the Central Universities (FRF-BR-15-026A), National Natural Science Foundation of China (No. 10972029), and Opening Fund of State Key Laboratory of Nonlinear Mechanics (LNM).
DepartmentLNM固体物理力学
Classification二类
RankingFalse
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59765
Collection非线性力学国家重点实验室
Corresponding AuthorWei, PJ (reprint author), Univ Sci & Technol Beijing, Dept Appl Mech, Beijing 100083, Peoples R China.
Recommended Citation
GB/T 7714
Zhang P,Wei PJ,Li YQ,et al. Wave Propagation Through a Micropolar Slab Sandwiched by Two Elastic Half-Spaces[J]. JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME,2016,138(4):41008
APA Zhang P,Wei PJ,Li YQ,&Wei, PJ .(2016).Wave Propagation Through a Micropolar Slab Sandwiched by Two Elastic Half-Spaces.JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME,138(4),41008.
MLA Zhang P,et al."Wave Propagation Through a Micropolar Slab Sandwiched by Two Elastic Half-Spaces".JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME 138.4(2016):41008.
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