Circular PVDF Airborne Transducer  

作　　者：焦丽华 徐利梅 胡泓 

机构地区：[1]School of Mechantronics Engineering,University of Electronic Science and Technology of China [2]Department of Professional and Continuing Education Shenzhen Academy,Harbin Institute of Technology

出　　处：《Journal of Electronic Science and Technology of China》2007年第1期53-57,共5页中国电子科技（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No. 60302001)

摘　　要：With the required increased audio pressure of the parametric ultrasonic transducer array and the difficulty to theoretically analyse the complex ultrasonic structure in audio beam application, an computationally efficient model is desired to describe the characteristic of the parametric ultrasonic transducer array for the system design and optimization. By applying the symmetry boundary conditions at the mid-plane in the thickness direction, a finite element model based on the haft thickness simplification is presented to analyze the parametric circular transducer which is designed by gluing the poly Vinylidene fluoride film （PVDF）. The validity of the proposed model is confn＇med by a comparison of finite element analysis results with the theoretical value and experimental data, which show that they are making a good agreement with each other.With the required increased audio pressure of the parametric ultrasonic transducer array and the difficulty to theoretically analyse the complex ultrasonic structure in audio beam application, an computationally efficient model is desired to describe the characteristic of the parametric ultrasonic transducer array for the system design and optimization. By applying the symmetry boundary conditions at the mid-plane in the thickness direction, a finite element model based on the haft thickness simplification is presented to analyze the parametric circular transducer which is designed by gluing the poly Vinylidene fluoride film （PVDF）. The validity of the proposed model is confn＇med by a comparison of finite element analysis results with the theoretical value and experimental data, which show that they are making a good agreement with each other.

关 键 词：parametric ultrasonic transducer resonance frequency anti-resonancefrequency finite element 

分 类 号：TN773[电子电信—电路与系统]