一维固-固结构声子晶体中SH波的声场分布  

Sound Field Distribution of SH Wave in 1DSolid-solid Phononic Crystal

作　　者：蒋和伦[1] 刘启能[1] 

机构地区：[1]重庆工商大学计算机科学与信息工程学院,重庆400067

出　　处：《压电与声光》2014年第6期891-894,共4页Piezoelectrics & Acoustooptics

基　　金：重庆市教委科技项目基金资助项目(KJ130713)

摘　　要：利用转移矩阵法推导出SH波在一维固-固结构声子晶体中声场的分布公式,利用这个公式研究了一维固-固结构声子晶体中声场的分布特征。禁带中声场随着SH波在一维固-固结构声子晶体内部传播深度的增加而迅速衰减。导带中声场不随SH波的传播深度的增加而衰减。这些特征的获得深化了对SH波在一维固-固结构声子晶体的禁带和导带的形成的认识。Using the transfer matrix methods,the sound field formula of SH wave is derived in 1D solid solid phononic crystal , and the sound field distribution characteristic of SH wave in 1D solid-solid doping photonic crystal is studied. Sound field of SH wave decreases with the increase of the propagation depth in band gap, while sound field of SH wave does not decreases with the increase of the propagation depth in conduction gap. These features help understanding to sound field distribution of the band gap and the conduction band in 1D phononic crystal.

关 键 词：声子晶体 SH波 声场 禁带 导带 

分 类 号：O77[理学—晶体学] TN384[电子电信—物理电子学]