THE MODELING OF PIEZOELECTRIC TRANSDUCERS USING THE FDTD METHOD
Based on the works of the finite-difference time-domain (FDTD) method to the piezoelectrics 11-15, we have extended this method to analyze electromechanical phenomena of one-dimensional multilayer piezoelectric transducers for the first time. In this method, the piezoelectric governing equations and Newtons equation are discretized to centered finite-differences, and the update equations for the transmit-receiver voltage and the piezoelectric governing equations are derived for the first time, then numerical solutions of the acoustic propagation in the time domain can be obtained by these difference equations. The model is applied to analyze the influence of thickness of the matching layer on the receiver voltages, and the propagation of particle velocity and the particle stress signals are demonstrated in space-time. In addition, this letter also applied Pronys method as an alternative to FFT since it capable of obtaining resonant frequencies from shorter time - domain responses. The technique is shown to be effective for the analyses characteristics of the wave propagating in multilayer transducers for both transient and steady-state problems.
FDTD method Piezoelectric transducers
ZHI-PENG CHI ZHENG-PING ZHAO NING LI
School of Information Engineering, Hebei University of Technology, Tianjin 300130, China Micro/Nano Technology Center, Hebei Semiconductor Research Institute, Shijiazhuang 050051, China College of Mathematics and Computer Science, Hebei University, Baoding 071002,China
国际会议
2008 International Conference on Machine Learning and Cybernetics(2008机器学习与控制论国际会议)
昆明
英文
2154-2159
2008-07-12（万方平台首次上网日期，不代表论文的发表时间）