Optimization design of ultrasonic vibration system of large-dimension wedge horn with phononic crystal heterojunction dislocation structure
LIN Jiyan1,2, LIN Shuyu1*
(1 School of Physics and Information Technology, Shaanxi Normal University, Xi′an 710119, Shaanxi, China; 2 School of Information Technology, Yulin University, Yulin 719000, Shaanxi, China）
Abstract:
In order to solve the problems of uneven amplitude distribution on the radiation surface and small amplification factor of the large-dimension wedge horn, a new type of horn with uniform amplitude distribution and large amplification factor is designed by using the heterojunction dislocation structure of near periodic phononic crystal.Through comparative analysis in COMSOL,it is proved that the near periodic phononic crystal heterojunction dislocation structure can effectively suppress the lateral vibration of large-dimension wedge horn, greatly improve the longitudinal displacement distribution uniformity of radiation surface, and increase the amplification factor.The paper provides a new method for the optimal design of large-dimension wedge horn.
KeyWords:
large-dimension wedge horn; heterojunction dislocation structure of near periodic phononic crystal; displacement distribution uniformity; amplification factor
