带压电片的阶梯形变幅杆的几何尺寸对振动特性的影响

本文分别讨论了两种振子:螺栓连接的振子和张力壳连接的振子。目的是:对螺栓连接的振子,通过改变阶梯形变幅杆的粗棒长度,分别研究细杆长度、位移振幅放大倍数,以及细杆输出位移振幅的变化,从而优选出变幅杆的粗端长度。另一方面对张力壳连接的振子,通过改变粗端直径大小,观察了细杆输出位移振幅的变化,粗、细端直径和谐振频率的关系。同时对细杆长度和谐振频率的关系,分别进行了探索,给出了选择振子尺寸的方法。 关键词：

INFLUENCE OF DIMENSION OF THE STEPPED HORNS WITH PIEZOELECTRIC TRANSDUCER ON THE PERFORMANCE OF THE VIBRATORS

In this paper, we discuss two types of vibrators, that connected by a single screw and that by a strain shell, respectively. The thick-end lengths of stepped horns are varied to find out their influence on the thin-end length, the gain of displacement amplitude, and the variation of displacement amplitude at the thin end. Optimized thick-end length are then selected out. For the vibrator connected by strain shell, the displacement amplitude of the thin end and the relationships among resonant frequencies and diameter of both the thick end and the thin end are determined. The relation between the thin-end length and resonant frequencies is also studied. The method for designing improved vibrators is given.