Nonlinear Dynamic Analysis and Experiment Verification of Rotor-Ball Bearings-Support-Stator Coupling System for Aeroengine With Rubbing Coupling Faults
Nonlinear Dynamic Analysis and Experiment Verification of Rotor-Ball Bearings-Support-Stator Coupling System for Aeroengine With Rubbing Coupling Faults
复制标题
航空发动机转子-球轴承-支架-定子联轴器系统摩擦联轴器故障的非线性动力学分析与实验验证
DOI：
10.1115/1.2940355
复制
发表时间：
2010-02-01
影响因子：
1.5
通讯作者：
Wang, D. Y.
中科院分区：
文献类型：
--
作者：
Chen, G.;Li, C. G.;Wang, D. Y.
针对实际航空发动机，建立了考虑碰摩耦合故障的转子-球轴承-支承-定子耦合系统动力学模型。该模型考虑了碰摩故障，考虑了定子运动，建立了弹性支承和挤压油膜阻尼器，并考虑了轴承间隙、滚珠与滚道之间的非线性赫兹接触力以及滚珠与滚道之间接触位置周期性变化引起的变柔振动等非线性因素。采用数值积分法求解系统响应，利用振幅-转速图研究了支承刚度对转子响应的影响，利用三维级联图分析了碰摩故障的特征。在航空发动机试验台上进行了转子碰摩故障试验，并将转子-球轴承-支座-定子耦合模型的仿真结果与试验结果进行了对比，结果的一致性充分说明了转子-球轴承-支座-定子耦合模型的有效性。[DOI：10.1115/1.2940355]
In this paper, a new rotor-ball bearings-support-stator coupling system dynamic model with rubbing coupling faults is established for practical aeroengine. In the model, the rubbing fault is modeled, the stator motion is considered, the flexible support and squeeze film damper are established, and the nonlinear factors of ball bearing, such as the clearance of the bearing, the nonlinear Hertzian contact force between balls and races, and the varying compliance vibration because of the periodical variety of the contact position between balls and races, are modeled. The numerical integral method is used to obtain the system responses, the effect of support stiffness on rotor responses is studied using a vibration amplitude-rotating speed plot, and the characteristics of the rubbing fault is analyzed using a 3D cascade plot. An aeroengine tester with a stator is established to carry out the rubbing fault experiments, the simulation results from the rotorball bearings-support-stator coupling model are compared with the experimental results, and the consistency of the results show fully the effectiveness of the new rotor-ball bearings-support-stator coupling model with rubbing fault. [DOI: 10.1115/1.2940355]