超声波电机定转子刚性接触模型研究

he subject of this paper is connected with the rigid contact model of stator and rotor in ring type traveling wave ultrasonic motor based on finite element method. Firstly, the vibration movement of the stator is analyzed. Then finite element model for contact between rigid stator and rigid rotor is developed. Boundary conditions are applied according to the vibration movement. Finally, the model is solved. The elliptical motion of the stator surface particle is verified. The contact pressure distribution as well as the contact status is obtained when both stator and rotor are rigid under no-load condition. The result indicates that the contact pressure is highly centralized and both stick and slip distribution exist in the contact area.