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 electromechanical 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.
Piezoelectric layered structure Functionally graded material (FGM) Love waves Surface acoustic wave (SAW) devices Electro-mechanical coupling factor
Xiao-Shan CAO Feng JIN Xiao-Yi MO Jun-Ping SHI
Department of Engineering Mechanics, Xian University of Technology, Xian 710048 MOE Key Laboratory for Strength and Vibration, Xian Jiaotong University, Xian 710049
国际会议
深圳
英文
240-244
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）