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Investigations of the barbell ultrasonic transducer operated in the full-wave vibrational mode
Authors:Fu Zhiqiang  Xian Xiaojun  Lin Shuyu  Wang Chenghui  Hu Wenxu  Li Guozheng
Institution:a Institute of Applied Acoustics, Shaanxi Normal University, No. 199, Chang’an South Road, Xi’an, Shaanxi 710062, PR China
b China Electronics Technology Group Corporation 26th Research Institute, Chongqing 400060, PR China
Abstract:In this paper, the resonance frequency equation and expression of displacement amplitude magnifications of a full-wave barber ultrasonic horn are obtained. By discussing the relationships between the displacement amplitude magnifications and the geometrical dimensions, the optimized design of the horn for the largest magnification is proposed, which is helpful to improve the radiation power and the transfer efficiency of the acoustic energy of the ultrasonic oscillatory system. Based on the optimized design of the horn, we introduced a barbell ultrasonic transducer operated in the longitudinal full-wave vibrational model and obtained the resonance frequency equations. For comparison, the resonance frequencies of the full-wave barbell horn and the full-wave barbell transducer are also analyzed by finite element method (FEM). It is shown that the values obtained by theoretical analysis and FEM are in good agreement with experimental observations. We hope that the research of this paper is helpful for the use of the barbell horn and transducer in the applications such as ultrasonic liquid processing.
Keywords:Barbell horn  Barbell transducer  Resonance frequency  Displacement amplitude magnification
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