Effect of initial stress on Love waves in a piezoelectric structure carrying a functionally graded material layer.
The effect of initial stress on the propagation behavior of Love waves in a piezoelectric half-space of polarized ceramics carrying a functionally graded material (FGM) layer is analytically investigated in this paper from the three-dimensional equations of linear piezoelectricity. The analytical solutions are obtained for the dispersion relations of Love wave propagating in this kind of structure with initial stress for both electrical open case and electrical short case, respectively. One numerical example is given to graphically illustrate the effect of initial stress on dispersive curve, phase velocity and electromechanical coupling factor of the Love wave propagation. The results reported here are meaningful for the design of surface acoustic wave (SAW) devices with high performance.
Qian
Zheng-Hua
ZH
Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology, Tokyo 152-8552, Japan. qian.z.aa@m.titech.ac.jp
Jin
Feng
F
Lu
Tianjian
T
Kishimoto
Kikuo
K
Hirose
Sohichi
S
D000465:Algorithms; D003198:Computer Simulation; D019220:High-Energy Shock Waves; D008420:Manufactured Materials / Q000032:analysis*; D055617:Micro-Electrical-Mechanical Systems / Q000379:methods*; D008962:Models, Theoretical; D012542:Scattering, Radiation