半空间功能梯度材料压电层状结构中的爱波

Xiaoshan Cao, F. Jin, Xiaomei Mo, Jun Shi
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引用次数: 1

摘要

在这个理论研究中,我们研究了Love波在压电层状结构中的传播。层状结构的衬底是一种功能梯度材料(FGM),其参数沿厚度和有界区域变化。采用变量代换法和幂级数法对Love波的控制方程进行渐近解析推导,具有较好的收敛性和较高的精度。研究了FGM梯度系数对该结构的色散曲线、机电耦合系数和Love波位移幅值分布的影响。这些理论结果不仅为利用FGM基板设计高性能表面声波(SAW)器件提供了指导,也为利用Love波测量FGM半空间的材料性能提供了指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Love waves in piezoelestric layered structure with functionally graded materail half space
In this theoretical study, we investigate the propagation of Love waves in a piezoelectric layered structure. The substrate of the layered structure is a functionally graded material (FGM) in which parameters vary along thickness and in the bounded domain. Both variable substitution and power series technique, which are shown to have good convergence and high precision, are employed for the asymptotic analytical derivations of the governing equation of Love wave. The influence of the gradient coefficient of FGM on the dispersion curves, and electro-mechanical coupling factor, and the displacement amplitude distributions of Love waves in this structure are investigated. The theoretical results set guidelines not only for the design of high performance surface acoustic waves (SAW) devices using the FGM substrate, but also for the measurement of material properties of FGM half space using Love waves.
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