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Elastic wave band gaps and defect states in two-dimensional composites

 

作者: M. M. Sigalas,  

 

期刊: The Journal of the Acoustical Society of America  （AIP Available online 1997）
卷期: Volume 101, issue 3  

页码: 1256-1261

 

ISSN:0001-4966

 

年代: 1997

 

DOI:10.1121/1.418156

 

出版商: Acoustical Society of America

 

关键词: COMPOSITE MATERIALS;ELASTICITY;ENERGY GAP;DEFECTS;POLARIZATION;FILTERS;SOUND WAVES;WAVE PROPAGATION

 

数据来源: AIP

 

摘要:

Using the plane-wave expansion method, we study the propagation of elastic waves through two-dimensional (2-D) periodic composites which exhibit full band gaps for all the polarizations and directions of the displacements. Defect states created inside those band gaps are also studied by disturbing the periodicity of the lattice. Systems exhibiting such kinds of states can be used as acoustical filters.

 

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