Effective elastic parameters of the two-dimensional phononic crystal

被引：30
|
作者：
Hou, ZL [1 ]
Wu, FG
Fu, XJ
Liu, YY
机构：
[1] S China Univ Technol, Dept Phys, Guangzhou 510640, Guangdong, Peoples R China
[2] Guangdong Univ Technol, Dept Appl Phys, Guangzhou 510090, Guangdong, Peoples R China
[3] CCAST, World Lab, Beijing 100080, Peoples R China
来源：
PHYSICAL REVIEW E | 2005年 / 71卷 / 03期
关键词：
D O I：
10.1103/PhysRevE.71.037604
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The effective acoustic velocity along two highly symmetric directions of the first Brillouin zone is studied in a two-dimensional squarely arranged solid-solid phononic crystal. The relationship between the effective elastic velocity and the wave frequency of the two lowest bands is presented, which gives the same results as those obtained directly from the band structure. Numerical calculations show that the effective acoustic velocity of the phononic crystal decreases with frequency increasing from zero to the band edge.
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页数：4
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