Design and optimization of stepped compound horn based on finite element method

Abstract

A stepped composite horn structure with column holes at the front end is proposed for use in power ultrasonic fields. Based on the finite element method, the vibration characteristics and amplitude magnification of the horn at resonance frequency are calculated, Analyzed the influence of different structural parameters on its performance parameters, analyzed the influence of the aperture size on the resonance frequency of the horn, Optimize the design of the proposed composite horn to obtain the maximum amplitude magnification, Perform simulation analysis on the horn through ANSYS Workbench, extract the seventh-order modal results, and perform modal analysis. The simulation results show that: compared with the traditional horn, the maximum amplitude of the step compound-shaped horn is increased by 72%, The frequency of longitudinal vibration of this open-hole horn is 26.92KHZ. The performance parameters of the optimized horn have been significantly improved.