双万向联轴器-转子系统弯扭耦合非线性振动特性研究

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (9) : 169-178.

振动与机械科学

双万向联轴器-转子系统弯扭耦合非线性振动特性研究

花纯利*，汪凯，曹国华，卢昊

作者信息 +

Nonlinear bending-torsional coupled vibration characteristics of dual-universal joint rotor system

HUA Chunli*, WANG Kai, CAO Guohua, LU Hao

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文章历史 +

摘要

为研究双万向联轴器连接的转子系统弯扭耦合振动机理，综合考虑双万向联轴器角向偏差、质量偏心和碰摩的影响，通过采用拉格朗日方程推导出双万向联轴器-转子系统弯扭耦合非线性动力学微分方程组。应用数值方法系统地分析了转子系统弯扭耦合振动响应特性，探究了双万向联轴器角向偏差和外激励载荷对转子系统无碰摩振动特性的影响规律。结合随系统参数变化的分岔图，研究了旋转频率、角向偏差、偏心率、阻尼比、接触刚度和摩擦系数等参数对系统碰摩振动响应特性的影响规律。这些研究结果有助于理解弯扭耦合多跨转子系统动态响应特性和现象，为转子系统的状态识别和故障诊断提供一定的理论依据。

Abstract

In order to find out the bending and torsional coupling vibration mechanism and characteristics of a rotor system with double universal joints, the nonlinear dynamic equations of unbalance rotor system with double universal joints are established by the Lagrangian approach, which considering the influence of the angular misalignment, mass eccentricity and rubbing. Through numerical calculation, the coupled vibration characteristics of the rotor system are investigated in detail. The influences of the angular misalignment of double universal joints and the external excitation load on the vibration characteristics of the rotor system without rubbing are investigated. Moreover, the influences of rotation frequency, angular misalignment, eccentricity, damping ratio, contact stiffness and friction coefficient on the response characteristics of the rotor system with rubbing are studied by the diagrams of bifurcation via parameters. These analysis results of the present paper can be helpful to understand the dynamic response characteristics and phenomena of the bending and torsional coupling multi-span rotor systems, and provide the theoretical basis for the rotor system’s status recognition and fault diagnosis.

导出引用

花纯利, 汪凯, 曹国华, 卢昊. 双万向联轴器-转子系统弯扭耦合非线性振动特性研究[J]. 振动与冲击, 2025, 44(9): 169-178

HUA Chunli, WANG Kai, CAO Guohua, LU Hao. Nonlinear bending-torsional coupled vibration characteristics of dual-universal joint rotor system[J]. Journal of Vibration and Shock, 2025, 44(9): 169-178

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