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该文以一个单跨双盘柔性转子系统为研究对象,建立转子系统的有限元模型。基于接触动力学理论,将转子和定子简化为一个点点接触单元,二者通过碰摩力进行耦合,采用增广的拉格朗日方法来处理接触约束条件,采用库仑摩擦模型来模拟转定子之间的摩擦。研究了不同转速对定点碰摩转子系统动力学特性的影响,并与实验结果进行了定性验证。研究结果表明,随转速升高系统出现了不同的运动形式,如周期1、周期2、周期3和周期4。
In this paper, a single-span double-disk flexible rotor system as the research object, the establishment of the rotor system finite element model. Based on the theory of contact dynamics, the rotor and stator are simplified into a single point contact unit. The two are coupled by rubbing force. The augmented Lagrangian method is used to deal with the contact constraint. The Coulomb friction model is used to simulate the stator Between the friction. The influence of rotational speed on the dynamic characteristics of the fixed-point rub-rotor system was studied and the results were qualitatively verified with the experimental results. The results show that different modes of motion occur with increasing speed, such as cycle 1, cycle 2, cycle 3 and cycle 4.