新型柱孔式模式转换型纵-扭复合模态超声振动系统

Design of a new cylindrical holes mode conversion longitudinal torsional composite mode ultrasonic vibration system

为了改善基于螺旋槽结构和斜槽结构的模式转换型纵-扭复合模态超声振动系统存在的结构复杂、扭转分量较小等问题,论文提出了基于新型柱孔式复合变幅杆的模式转换型纵-扭复合模态超声振动系统,并利用有限元法和数据分析对其进行了仿真分析。结果表明,引入新型柱孔式复合变幅杆的系统的输出端面的剪切应力、旋转角度得到了大幅提升,能够有效地提高纵-扭振动的转换效率。

At present,most studies have realized the mode conversion longitudinal torsional composite vibration by opening spiral grooves or inclined slots on the longitudinal vibration horn.However,the system based on spiral grooves structure has some disadvantages,such as difficult model establishment and complex structure.Therefore it has great limitations in practical application.It is relatively simple to use the inclined slot structure to realize the mode conversion longitudinal torsional composite vibration,but the energy conversion efficiency is low.How to optimize the mode conversion longitudinal torsional composite vibration has become an urgent problem to be solved.In this paper,a mode conversion longitudinal torsional composite mode ultrasonic vibration system based on the new cylindrical holes composite horn is proposed.The simulation analysis of the new system is carried out by using the finite element method and data analysis.The analysis results show that the shear stress and rotation angle of the output end face of the new cylindrical holes composite horn system are greatly improved,so as to effectively improve the conversion efficiency of longitudinal and torsional vibration.