超声波电机定、转子在高过载冲击环境下的强度计算

Calculation of Strength of Stator and Rotor for Ultrasonic Motor in High Impact Environment

针对制导炮弹的高过载应用环境,设计了抗高过载超声波电机,研究了超声波电机结构对瞬时超大过载的耐受情况。仿真分析了电机的定、转子在强冲击载荷下的应力和应变分布规律;对结构强度加强后的转子、对施加波形弹簧和吸振垫圈的定子进行了仿真,对比分析了缓冲减振措施的效果。对超声波电机的耐过载特性进行了轴向冲击实验。综合仿真计算结果和实验结果分析了超声波电机缓冲减振措施的耐过载能力。

In order to solve the problem of guided projectile in strong shock environment, the anti-high-overloaded ultrasonic motor is designed and analyzed. This paper studies the tolerance of ultrasonic motor structure to transient high overload. The stress and strain distribution of the stator and rotor in strong shock environment are simulated and analyzed. The strength of the rotor is strengthened, and the stator with the wave spring and the vibration absorbing washer is simulated. The effect of buffer damping measures is compared and analyzed. The ultrasonic impact test of the ultrasonic motor is carried out. The overload resistance of the ultrasonic motor is analyzed on the basis of the results of the simulation and the experimental results.