Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65387
Title: Traveling Lamb wave in elastic metamaterial layer
Authors: Shu, H
Xu, L
Shi, X
Zhao, L
Zhu, J 
Issue Date: 2016
Publisher: American Institute of Physics
Source: Journal of applied physics, 2016, v. 120, no. 16, 165103 How to cite?
Journal: Journal of applied physics 
Abstract: The propagation of traveling Lamb wave in single layer of elastic metamaterial is investigated in this paper. We first categorized the traveling Lamb wave modes inside an elastic metamaterial layer according to different combinations (positive or negative) of effective medium parameters. Then the impacts of the frequency dependence of effective parameters on dispersion characteristics of traveling Lamb wave were studied. Distinct differences could be observed when comparing the traveling Lamb wave along an elastic metamaterial layer with one inside the traditional elastic layer. We further examined in detail the traveling Lamb wave mode supported in elastic metamaterial layer, when the effective P and S wave velocities were simultaneously imaginary. It was found that the effective modulus ratio is the key factor for the existence of special traveling wave mode, and the main results were verified by FEM simulations from two levels: the level of effective medium and the level of microstructure unit cell.
URI: http://hdl.handle.net/10397/65387
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.4965858
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

25
Checked on Nov 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.