STOP BANDS FOR ELASTIC-WAVES IN PERIODIC COMPOSITE-MATERIALS

被引:133
|
作者
ECONOMOU, EN [1 ]
SIGALAS, M [1 ]
机构
[1] UNIV CRETE,DEPT PHYS,IRAKLION,GREECE
来源
关键词
D O I
10.1121/1.408692
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The frequency omega versus wave vector k of elastic waves propagating in periodic binary composites consisting of solid inclusions placed periodically in a host matrix was calculated. Attention was focused on the possibility of stop bands (spectral gaps) for all directions of propagation in such composites. It was fo;nd that gold or lead inclusions of about 10% volume fraction in a Si or Be matrix give rise to stop bands.
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页码:1734 / 1740
页数:7
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