Amir Abdullah - Associate Professor of Mechanical Engineering in Advanced Manufacturing Technologies Amirkabir University of Technology
Abbas Pak - Ph.D student of Manufacturing Engineering. School of Engineering, Tarbiat Modarres University
Alireza Shahidi - MSc and Senior Researcher in Manufacturing Engineering

Finite element method (FEM) has been employed extensively for vibration modal analysis of piezoelectric transducers and devices. Recently, here has been a growing interest in the simulation and analysis of piezoelectric transducers by using equivalent electrical circuit models. This paper has been devoted to such purpose for an ultrasonic sandwich transducer having longitudinal vibrations for high power applications. By analytical analysis, the dimensions of the transducer components were obtained such that the resonance frequency of transducer to be 22KHz for 3KW power emission. By using a 2D finite element model, a current source was connected directly to the model. Also, equivalent electrical-circuit models were developed. Then, the models were analyzed by ANSYS and resonance, anti-resonance frequencies and also voltage, current and equivalent impedance variations were obtained. Finally, simulation and experimental results were compared.

ultrasonic transducer، equivalent electrical circuit، Finite Element Modeling