High-power piezoelectric vibration model considering the interaction between nonlinear vibration and temperature...

Area of Science:

• Materials Science
• Mechanical Engineering
• Physics

Background:

• High-power piezoelectric devices suffer from nonlinear vibrations and temperature increases due to stress and strain.
• Previous research has not fully addressed the complex phenomenon of temperature rise in these devices.
• Understanding this interaction is crucial for improving device performance and longevity.

Purpose of the Study:

• To clarify the mechanism of interaction between nonlinear vibration and temperature increase in piezoelectric transducers under high-power conditions.
• To develop a model that accounts for the non-uniform temperature distribution.
• To investigate the impact of temperature-dependent material properties on piezoelectric vibration.

Main Methods:

• Combined cubic strain terms, nonlinear transfer matrix method, and heat conduction equation.
• Utilized a distributed parameter model to capture non-uniform temperature changes.
• Incorporated measured temperature dependence of material constants into calculations.

Main Results:

• The study successfully clarified the interaction mechanism between nonlinear vibration and temperature rise.
• Calculations demonstrated that temperature increase significantly degrades piezoelectric vibration.
• The developed model accurately reflects the complex thermal-mechanical coupling.

Conclusions:

• The proposed model provides critical insights into the thermal-mechanical behavior of piezoelectric devices.
• Temperature increase is a significant factor degrading high-power piezoelectric vibration.
• This model is expected to be essential for developing advanced piezoelectric materials for high-power applications.