Complete Band Gaps for Lamb Waves in Cubic Thin Plates with Periodically Placed Inclusions
CHEN Jiu-Jiu, QIN Bo, CHENG Jian-Chun
State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093
Complete Band Gaps for Lamb Waves in Cubic Thin Plates with Periodically Placed Inclusions
CHEN Jiu-Jiu;QIN Bo;CHENG Jian-Chun
State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093
关键词 ：
43.35.Cg ,
43.20.Gp
Abstract ： We present a theoretical study for propagation of Lamb waves in cubic thin plates consisting of solid inclusions placed periodically in the host material. The dispersion curves of Lamb waves propagating parallel to the surfaces of the plates are calculated based on the plane wave expansion method for triangular lattices. We realize the existence of full band gaps in the systems composed of W cylinders embedded in a Si matrix with filling ratio f=0.176 for different thickness ratios of h/a, where h is the plate thickness and a is the lattice spacing.
Key words ：
43.35.Cg
43.20.Gp
出版日期: 2005-07-01
:
43.35.Cg
(Ultrasonic velocity, dispersion, scattering, diffraction, and Attenuation in solids; elastic constants)
43.20.Gp
(Reflection, refraction, diffraction, interference, and scattering of elastic and poroelastic waves)
引用本文:
CHEN Jiu-Jiu;QIN Bo;CHENG Jian-Chun. Complete Band Gaps for Lamb Waves in Cubic Thin Plates with Periodically Placed Inclusions[J]. 中国物理快报, 2005, 22(7): 1706-1708.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I7/1706
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