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性能可调的纵向振动圆锥形超声变幅杆
引用本文:林书玉,唐一璠,徐洁.性能可调的纵向振动圆锥形超声变幅杆[J].应用声学,2018,37(1):20-27.
作者姓名:林书玉  唐一璠  徐洁
作者单位:陕西师范大学应用声学研究所,陕西师范大学物理学与信息技术学院,陕西师范大学物理学与信息技术学院
基金项目:国家自然科学基金项目 (11374200, 11474192, 11674206)
摘    要:提出了一种基于压电效应的性能可调纵向振动圆锥形超声变幅杆,并对其振动性能进行了研究。该变幅杆由传统的圆锥形超声变幅杆和压电陶瓷材料组合而成。论文研究了圆锥变幅杆中压电陶瓷材料的厚度、位置以及电阻抗的改变对变幅杆性能参数的影响,并进行了数值模拟仿真及实验验证。结果表明,通过改变压电陶瓷材料的厚度、位置和电阻抗值,可以实现变幅杆共振频率和位移放大系数的改变。理论计算结果与数值模拟值和实验测试值符合得很好。

关 键 词:超声变幅杆,性能调节,共振频率,位移放大系数,电阻抗
收稿时间:2017/10/13 0:00:00
修稿时间:2017/12/25 0:00:00

Longitudinal conical ultrasonic horns with adjustable vibrational performance
Shuyu Lin,TANG Yifan and XU Jie.Longitudinal conical ultrasonic horns with adjustable vibrational performance[J].Applied Acoustics,2018,37(1):20-27.
Authors:Shuyu Lin  TANG Yifan and XU Jie
Institution:Institute of Applied Acoustics, Shaanxi normal Universoty,School of Physics and Information Technology and School of Physics and Information Technology
Abstract:Longitudinal conical ultrasonic horn with adjustable vibrational performance based on piezoelectric effect is proposed and studied. It is composed of the traditional ultrasonic horn and the piezoelectric material. By changing the electric impedance connected to the piezoelectric material, the vibrational performance can be adjusted. The effect of the electric impedance and the piezoelectric material on the ultrasonic horn is analyzed analytically; meanwhile, the resonance frequency and the displacement magnification are numerically simulated. It is shown that the theoretical results are in good agreement with the numerically simulated results. It is expected that this kind of ultrasonic horns can be used in high power ultrasonic technology where different vibrational performance is needed.
Keywords:Ultrasonic horn  Performance adjustment  Resonance frequency  Displacement magnification  Electric impedance
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