压电陶瓷圆柱振子的本征模式研究

Analysis of natural vibration for coupled piezoelectric ceramic cylinders

压电陶瓷圆柱振子的本征模式研究林书玉，张福成（陕西师范大学应用声学研究所，西安７１００６２；第一作者，男，２９岁，副教授）当圆柱状换能器的高度与半径相差很大时，其振动可看成是一维的径向或轴向振动．然而当振子的半径与高度处于同一量级时，其振动模式不同于...

The coupled vibration of piezoelectric ceramic cylinders is studied.The natural frequency equation of the resonators is derived out theoretically.As there are no limitations to the dimensions of the resonators, the theory is applicable to any piezoelectric ceramic cylinders, such as the thick disks and the long rods.Theoretical and experimental analyses show that the method presented is simple for the analysis of coupled vibrationof resonators.Compared with one dimensional theory,the calculated resonant frequencies are in better agreement with the measured results than those of one dimensional theory.