Analysis of the coupled lateral torsional vibration of a rotor-bearing system with a misaligned gear coupling
Analysis of the coupled lateral torsional vibration of a rotor-bearing system with a misaligned gear coupling
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DOI：
10.1006/jsvi.2000.3412
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发表时间：
2001-05
影响因子：
4.7
通讯作者：
M. Li;L. Yu
中科院分区：
文献类型：
--
作者：
M. Li;L. Yu
齿轮联轴器的不对中是多转子系统中的一个重要问题，它会导致各种故障。根据齿轮联轴器的啮合条件，建立了转子-轴承-齿轮耦合系统的非线性耦合横扭振动模型。理论分析表明，初始不对中作用在齿轮联轴器上的力和力矩来自于套筒的惯性力和啮合齿间的内阻尼，并与不对中、内阻尼、转速和齿轮联轴器的结构参数有关。对振动特征的数值分析表明，偏心系统发生了偶数倍的转速横向振动和奇数倍的扭转振动，齿轮联轴器附近发生了整数倍的振动。
The misalignment of a gear coupling in a multirotor system is an important problem; it can cause various faults. In the present work the non-linear coupled lateral torsional vibration model of rotor-bearing-gear coupling system is developed based on the engagement conditions of gear couplings. Theoretical analysis shows that the forces and moments acting on gear couplings due to the initial misalignment are from the inertia forces of the sleeve and the internal damping between the meshing teeth, and depend on the misalignment, internal damping, the rotating speed, and the structural parameters of the gear coupling. Numerical analysis of the signature of vibration reveals that the even-integer multiples of the rotating speed of lateral vibration and the odd-integer multiples of the torsional vibration occur in the misaligned system, and the integer multiples of vibration are apparent around the gear coupling.