PRELIMINARY SIMULATION AND OPTIMIZATION DESIGN OF ULTRASONIC HARMONIC SCALPEL

摘要：

　　In this paper, the structure and vibration mechanism of the ultrasonic harmonic scalpel are studied theoretically.According to the one-dimensional longitudinal vibration theory of elastic rod and finite element simulation method, the structure of ultrasonic transducer and amplitude transformer are designed with the resonant frequency of 55.5 kHz and the output amplitude greater than 40 microns.Then, an axisymmetric cylindrical arbor structure was studied and optimized by the finite element method (FEM).Optimization includes reducing the diameter of the scalpel head and thickening the cylinder at the antinode of radial displacement, such that the radial vibration and the stress of the scalpel rod is reduced;finally, a simple simulation analysis of the three-dimensional structure with the scalpel head is carried out, the result shows that the structure of the asymmetry scalpel head can increase the radial vibration of the scalpel rod.

关键词： Ultrasonic harmonic scalpel Transducer Radial vibration Maximum stress Finite element

作者: Xue LI Chang SU Wei-jun LIN

作者单位: Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190;University of Chinese Academy of Sciences, Beijing, 100049;Beijing Deep Sea Drilling Measurement Engineering Technology Research Center, Beijing, 100190

会议类型: 国际会议

会议名称: The 2019 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2019(第13届)全国压电和声波理论及器件技术研讨会)

会议地点: 哈尔滨

会议语种:英文

页码: 392-396

在线出版日期: 2019-01-11（万方平台首次上网日期，不代表论文的发表时间）