摘要
提出一种层厚递变式一维准周期结构声子晶体模型,数值计算了弹性波通过该一维准周期结构声子晶体的透射系数,并与周期结构声子晶体的透射系数进行了比较.计算发现,利用准周期排列的特殊结构可以有效地调节声子晶体的带隙宽度和所在的频率范围.
A model of one-dimensional phononic crystal with quasi-periodical structure,in which the layer thickness can be changed gradually, is proposed. The transmission coefficients of the elastic waves through the quasi-periodlcal phononic crystal have been numerically calculated, and been compared with the transmission coefficients of periodical phononic crystal. The numerical results show that the width and the frequency location of the band gap of phononic crystal can be adjusted by utilizing the special quasi-periodical structure.
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
2008年第1期53-57,共5页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(10765003)
内蒙古自然科学基金资助项目(200607010107)
关键词
准周期结构
声子晶体
带隙
qusi-periodical structure
phononic crystal
band gap
