一种多物理场耦合的压电振动传感器谐振频率仿真方法
By using the finite element simulation method with multi-physics coupling, the problem of inaccurate design of the resonant frequency of piezoelectric vibration sensors is solved, and accurate simulation and design optimization of the sensor resonant frequency are achieved, supporting the improvement and iteration of sensor structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AEROSPACE LONG MARCH LAUNCH VEHICLE TECH CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for designing the resonant frequency of piezoelectric vibration sensors mainly rely on simplified theoretical models, which cannot accurately reflect the influence of the material properties of various structural components and the actual assembly scheme on the resonant frequency, resulting in significant differences between the design results and the actual results.
A multi-physics coupled finite element simulation method was adopted. Combining the mechanical and electrical characteristics of the piezoelectric vibration sensor, multi-physics coupled simulation was performed using the finite element software COMSOL. The geometric model of the sensor was established, and solid mechanics and electrostatic physics fields were added in the finite element software. The bolt preload was set, mesh generation and frequency domain analysis were performed, and the resonant frequency of the sensor was obtained.
It achieves accurate simulation of sensor resonant frequency, which can intuitively reflect the resonant frequency changes of different structures, support the optimization and improvement of sensor design, and save design time and costs.
Smart Images
Figure CN120579367B_ABST