Spherical piezoelectric transducers of functionally graded materials
Sha Wang1, Cheng Chen1, Liqing Hu1
1Shaanxi Key Laboratory of Ultrasonics, Institute of Applied Acoustics, Shaanxi Normal University, Xi'an 710119, China.
The Journal of the Acoustical Society of America
|August 5, 2022
Summary
A new model for functionally graded spherical piezoelectric transducers (FG-sPETs) simplifies vibration system analysis. This research guides the optimized design of piezoelectric devices.
Area of Science:
- Piezoelectric Transducer Technology
- Mechanical Vibration Analysis
- Materials Science
Background:
- Functionally graded materials offer tunable properties.
- Spherical piezoelectric transducers are crucial for various applications.
- Accurate modeling is essential for device optimization.
Purpose of the Study:
- To propose a functionally graded spherical piezoelectric transducer (FG-sPET).
- To develop an accurate theoretical model using a three-port electromechanical equivalent circuit model (EECM).
- To investigate the impact of design parameters on vibration characteristics.
Main Methods:
- Construction of a three-port electromechanical equivalent circuit model (EECM).
- Integration of the FG-sPET EECM with other vibration systems via boundary conditions.
- Verification of the EECM against existing literature.
- Analysis of geometric dimensions and non-uniform coefficients' effects.
Main Results:
- The EECM accurately represents FG-sPET behavior and integrates with broader systems.
- Resonance/anti-resonance frequencies and effective electromechanical coupling coefficients were determined.
- Key factors influencing FG-sPET vibration characteristics were systematically evaluated.
Conclusions:
- The proposed analytical system provides a robust framework for FG-sPET analysis.
- The study offers valuable guidance for the structural optimization of functionally graded piezoelectric devices.
- This work advances the design and application of piezoelectric transducers.
