具有初应力的一维周期极化压电声子晶体表面波有限元分析
Finite element analysis of surface acoustic waves in one-dimensional periodic polarization piezoelectric phononic crystal with initial stress
本文对具有覆盖层的一维声子晶体中的表面波进行了研究，通过有限元法结合周期性边界条件，计算得到了瑞利波的禁带结构图。分析了压电材料极化方向周期性改变的声子晶体基体，在其表面附加氧化锌覆盖层时对禁带的影响。考虑了覆盖层厚度变化及具有初应力时对禁带的作用，结果显示覆盖层厚度及初应力均对禁带的位置和宽度有显著影响。因此，可以通过改变覆盖层的特性实现对表面波的调控。
In this article we report a theoretical investigation of surface acoustic waves propagation in one-dimensional phononic crystal covered with a layer. By means of the finite element method and using periodic boundary conditions, Rayleigh surface acoustic wave's band structures are obtained. One specified types of phononic crystal based on periodic polarition mechanism is investigated, the effects of the thickness of the layer and the initial stress on the band gap are analyzed. We find that both of the thickness of the layer and the initial stress can change the position and the width of the band gap significantly. The results are useful to the control of surface acoustic waves.
杜建科、杨光英
物理学声学工程材料科学
初应力周期极化表面波声子晶体
initial stressperiodic polarizationsurface wavephononic crystal
杜建科,杨光英.具有初应力的一维周期极化压电声子晶体表面波有限元分析[EB/OL].(2016-10-17)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/201610-93.点此复制
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