State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China.
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China.
Ultrasonics. 2020 Jan;100:105982. doi: 10.1016/j.ultras.2019.105982. Epub 2019 Aug 20.
A slender type of ultrasonic motor using longitudinal-torsional hybrid vibration is proposed and investigated in this paper. To acquire the response and mechanical capacity of the assembled and complete hybrid longitudinal-torsional ultrasonic motor, a 3D finite element model has been established by the commercial FE software ADINA. The numerical results agree with the experimental results in terms of the trend and the order of magnitude, meaning that it is easy to evaluate the mechanical characteristics of the motor before prototype manufacture. Meanwhile, the radial, circumferential and axial displacements of the contact nodes can be obtained to simulate the actual elliptical motions of the stator teeth. In addition, the practical contact mechanism between the stator and rotor can be accurately reflected by the stress nephogram of the contact surfaces. This research provides a convenient method for the structure optimization and mechanical capacity prediction of the hybrid longitudinal-torsional ultrasonic motor.
本文提出并研究了一种采用纵扭复合振动的细长型超声电机。为了获得装配完整的混合纵扭超声电机的响应和机械性能，采用商业有限元软件 ADINA 建立了 3D 有限元模型。数值结果与实验结果在趋势和数量级上是一致的，这意味着在原型制造之前很容易评估电机的机械特性。同时，可以获得接触节点的径向、周向和轴向位移，以模拟定子齿的实际椭圆运动。此外，通过接触表面的应力云图可以准确地反映定子和转子之间的实际接触机制。这项研究为混合纵扭超声电机的结构优化和机械性能预测提供了一种方便的方法。
