无锚杆金属固态振动陀螺振子结构优化与特性仿真分析

Structural Optimization and Characteristic Simulation Analysis of Anchorless Metal Solid-state Vibration Gyro Oscillator

摘要:

针对Ψ型陀螺振子加工难度大等问题，优化改进一种无锚杆金属振子。运用有限元分析软件，对振子的振动特性进行了深入分析，获得其各阶振型和固有频率；对振子进行过载特性仿真分析，得出振子在高过载条件下的应力和位移表现；并进一步采用多物理场分析振子的品质因数。结果表明，该金属振子直径为15mm，固有频率为12518Hz，模态隔离度大于3324Hz，能够承受不小于3.8×10^4g的过载冲击，同时品质因数达到8.7×10^4。

Abstract:

In response to the challenges posed by the Ψ-type gyroscope oscillator, an anchor-free metal oscillator is optimized and improved. Using the finite element simulation, the vibration characteristics of the oscillator are analyzed in depth, and the oscillator modes and natural frequencies of each order are obtained. The overload characteristics of the oscillator are simulated and analyzed, and the stress and displacement performance of the oscillator under high overload conditions are obtained. The quality factor of the oscillator is further analyzed by multi-physical field. The results show that the metal oscillator has a diameter of 15 mm, a natural frequency of 12518 Hz, a modal isolation of more than 3324 Hz, and can withstand an overload impact of no less than 3.8×10^4 g, while the quality factor reaches 8.7×10^4.