The characteristics of wave propagation in laminated grid structure

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Abstract
The characteristics of wave propagation in laminated grid structure are analyzed using the lumped-mass method to yield the phase constant surface. The directions and regions of wave propagation in this grid structure for certain frequencies during pass bands are predicted with the iso-frequency contour lines of the phase constant surface, which are also validated with the calculated harmonic responses of a finite two-dimensional grid structure with 15×15 unit cells.

Keywords:
phononic crystals /

elastic band gap /

lump-mass method /

phase constant surface
Authors and contacts
Wen Ji-Hong,

Yu Dian-Long,

Wang Gang,

Zhao Hong-Gang,

Liu Yao-Zong

1.
国防科学技术大学机电工程研究所,长沙 410073
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