大振幅纵-扭复合振动模式超声变幅杆

Longitudinal-torsional Composite Mode Exponential Ultrasonic Horns with Large Amplitude

研究了纵向及扭转振动在指数型变幅杆中的传播规律。通过选择指数型变幅杆的截面函数变化形式 ,导出了在同一变幅杆中纵向及扭转振动同频共振的条件 ,推出了指数型纵 -扭复合变幅杆的频率设计方程 ,为超声应用技术中纵

In this paper,the ultrasonic exponential horns in longitudinal and torsional composite vibrational modes are studied By analyzing the propagation characteristics of the longitudinal and torsional vibrations in the ultrasonic exponential horns and choosing the decay constant of the cross sectional area of the ultrasonic exponential solid horns,the condition at which the longitudinal and torsional vibrations at the same resonance frequency is given Experiments show that the calculated resonance frequencies of the horns are in good agreement with the measured results,and the resonance frequency of the longitudinal vibration in the horn is almost the same as that of the torsional vibration in the same exponential horn This kind of longitudinal torsional composite mode ultrasonic exponential horn can be used in ultrasonic techniques such as ultrasonic machining which requires very large mechanical displacements