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Analytical method of studing the phononic bandgap in 1D phononic crystal
Author(s): 
Pages: 185-188
Year: Issue:  2
Journal: Chinese Journal of Applied Mechanics

Keyword:  声子晶体声波能带解析法;
Abstract: 为了对一维声子晶体的能带进行解析研究,采用一维声子晶体的色散法,推导出一维声子晶体禁带频率和通带频率的解析公式;并利用此式对一维声子晶体的能带结构进行了解析研究,得到了禁带和导带的频率中心、频率宽度分别随介质厚度和声阻抗两者的变化规律,并与转移矩阵方法的计算结果进行了比较.研究结果表明:两种方法得到的结论相同,但解析法能更准确、更深刻地反映出一维声子晶体的能带随介质厚度和声阻抗等因素的变化规律;并...
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