圆锥形复合变幅杆纵-扭复合振动的实现  

Realizing Longitudinal-torsional Compound Vibration with Conical Composite Horn

作　　者：郑建新[1] 刘洋[1] 罗傲梅[1] 刘传绍[1] 

机构地区：[1]河南理工大学机械与动力工程学院,焦作454000

出　　处：《机械科学与技术》2013年第8期1186-1189,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51005071)资助

摘　　要：为解决纵-扭复合振动超声加工中复合振动的实现难题,对单激励纵-扭复合振动圆锥形复合变幅杆展开研究。基于变截面杆一维纵向振动和扭转振动理论,推导出圆锥形复合变幅杆纵向振动和扭转振动的频率方程,并确定其振动特性参数。阐释了单激励下圆锥形复合变幅杆纵-扭复合振动的实现机理,并通过应用实例给予验证。理论计算、数值分析与测试结果表明,选择合适的几何结构参数,圆锥形复合变幅杆可以实现纵-扭复合振动。It is difficult to realize the longitudinal-torsional compound vibration during the ultrasonic machining, we study the conical composite horn under single excitation. We derive the longitudinal vibration frequency equation and the torsional vibration frequency equation of the conical composite horn by using the theory of longitudinal vi- bration and torsional vibration of a one-dimensional variable cross-section bar, thus obtaining the vibration charac- teristics parameters. We explain the mechanisms of longitudinal-torsional compound vibration with the conical com- posite horn under single excitation and verify them with a practical application. The results of theoretical calcula- tion, numerical study and experimental tests show that the longitudinal-torsional compound vibration can be realized with the conical composite horn when the appropriate geometrical parameters are chosen.

关 键 词：圆锥形复合变幅杆 纵-扭复合振动 超声 频率方程 振动特性 

分 类 号：TB552[理学—物理]