电缆管道
振动
非线性系统
球(数学)
控制理论(社会学)
滚珠轴承
方位(导航)
直升机旋翼
转速
结构工程
工程类
计算机科学
物理
声学
数学
机械工程
有限元法
数学分析
润滑
人工智能
量子力学
控制(管理)
作者
Hongyang Xu,Yang Yang,Hui Ma,Zhong Luo,Xiaopeng Li,Qingkai Han,Bangchun Wen
标识
DOI:10.1016/j.ijmecsci.2022.107536
摘要
The inner ring dynamic misalignment of deep groove ball bearings (DGBBs), as a possible error type in practical engineering, has significant influences on the service performance of the rotor system. A novel dynamic model of the bearing-rotor system with inner ring dynamic misalignment and a model solving method based on the Newton-Raphson and Newmark-β nested iterations are proposed in this paper. This method perfectly integrates the quasi-static model of the ball bearing with the dynamic model of the rotor system. In addition, the proposed model can better consider the nonlinearity caused by the ball-raceway contact and the three-dimensional (3D) clearance inside the bearing. By comparing with the experiment, the accuracy of the proposed model is verified. On this basis, the effects of misalignment angle, radial clearance, and rotational speed on the dynamic characteristics of the system are analyzed. The results show that the inner ring dynamic misalignment introduces additional bearing force excitation and increases the vibration of the system. In addition, the inner ring dynamic misalignment cancels out the radial clearance, enhances the axial restraint of the system, and changes the axial vibration characteristics from soften-type to hardening-type nonlinearity.
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