Page 122 - 《应用声学》2022年第4期

第 41 卷 第 4 期 Vol. 41, No. 4
2022 年 7 月 Journal of Applied Acoustics July, 2022

⋄ 研究报告 ⋄

斜槽式单激励纵扭超声变幅杆设计 ∗

吴豪琼 † 高志强

(河南工学院机械工程学院 新乡 453000)

摘要：为实现在纵向单激励超声振动输入条件下获得纵扭谐振输出，基于声波传播理论，设计了一种阶梯型
变幅杆，在其输出端增加了一段周向均布 6 个斜槽的圆环传振杆。首先进行理论设计，然后使用有限元进行分
析修正，最后确定变幅杆尺寸。结果表明：理论设计谐振频率 20 kHz，仿真分析在 19457 Hz 时变幅杆能够实
现纵扭谐振；根据仿真结果制作变幅杆，阻抗测试结果谐振频率为 19884 Hz，与理论值、仿真值误差较小；在
输入端加载幅值为 5 µm 的纵向单激励超声振动，测试输出端截面圆周上任意一点，其切向和纵向振幅分别为
12.7 µm 和 8.5 µm，表明变幅杆实现了纵扭谐振且振幅增强。
关键词：纵扭谐振；6 斜槽；有限元分析；阻抗测试；振幅测试
中图法分类号: TB552 文献标识码: A 文章编号: 1000-310X(2022)04-0620-06
DOI: 10.11684/j.issn.1000-310X.2022.04.014

The design of multiple diagonal slits ultrasonic horn with single-excitation
longitudinal-torsional vibration

WU Haoqiong GAO Zhiqiang

(School of Mechanical Engineering, Henan Insititute of Technology, Xinxiang 453000, China)
Abstract: In order to obtain the longitudinal torsional resonance output under the condition of single longi-
tudinal excitation ultrasonic vibration input, based on the sound wave propagation theory, the stepped horn
adding a ring vibration transmitting rod with 6 multiple diagonal slits along the central axis was designed.
Firstly, the theoretical design is carried out, then the finite element method is used for analysis and correction,
finally, the size of the horn is determined. The results show that the theoretical design resonant frequency
is 20 kHz, simulation analysis shows that the horn can realize longitudinal torsional resonance at 19457 Hz.
The horn is made according to the simulation results. The resonance frequency of impedance test results is
19884 Hz, it has little error with theoretical value and simulation value. The 5 µm loading amplitude at the
input of the horn, test any point on the section circumference of the output end, its tangential and longitudinal
amplitudes are 12.7 µm and 8.5 µm, which shows that the horn realizes the longitudinal torsional resonance
output and the amplitude is strengthened.
Keywords: Longitudinal-torsional vibration; The 6 multiple diagonal slits; Finite element analysis; Impedance
test; Amplitude test

2021-12-13 收稿; 2022-04-12 定稿
国家自然科学基金项目 (51005071), 河南省科技攻关项目 (212102210367, 222102220026), 河南省高校重点科研项目计划项目
∗
(22B460004, 22B460002)
作者简介: 吴豪琼 (1986– ), 男, 河南新乡人, 硕士, 讲师, 研究方向: 超声加工技术。
† 通信作者 E-mail: wuhaoqiong1986@163.com