A New Approach to Finite Element Modeling of Ultrasonic Transducers

This paper presents a new method for constructing finite element models (FEM) for ultrasonic transducers, aiming to improve the simulation accuracy and efficiency. The proposed method focuses on accurately modeling the interaction between structural components such as the piezoelectric layer, electrode layer, and wave transmission layer with the surrounding environment, while considering factors such as the piezoelectric effect, reflected wave, and energy loss in the material. The finite element model is built for 2D and 3D models, taking into account the influence of meshing on the simulation results, especially the meshing of ceramic material plates. The simulation results are compared with standard data, showing that the new FEM model achieves high accuracy in predicting the frequency characteristics and impulse response of ultrasonic transducers. This proposed method opens up potential applications in the design and optimization of ultrasonic transducers.