弹流润滑影响下的轴承耦合缺陷动力学建模研究  

Dynamical Modeling on Bearing Coupling Defects Considering Influence of Elastofluid Lubrication

作　　者：张博 刘韬[1,2] 王振亚 阮强 ZHANG Bo;LIU Tao;WANG Zhenya;RUAN Qiang(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Key Laboratory for Advanced Equipment Intelligent Manufacturing Technology of Yunnan Province,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650500 [2]云南省先进装备智能制造技术重点实验室,昆明650500

出　　处：《机械科学与技术》2024年第10期1672-1680,共9页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(52065030);云南省重大科技专项计划(202102AC080002)。

摘　　要：针对传统动力学模型未考虑弹流润滑的影响以及深沟球轴承多点缺陷理论参考较少的问题。基于非线性Hertz接触理论与时变位移激励函数,建立了弹流润滑影响下的具有耦合缺陷的深沟球轴承二自由度动力学模型。通过对比缺陷轴承实验信号与数值仿真信号的幅频信息,验证了动力学模型的准确性。并依据此模型分析了缺陷宽度、径向载荷、转速对油膜参数、典型时域特征参数的影响。分析表明:随着缺陷宽度、径向载荷的增大,有量纲指标峰值、均方根值与无量纲指标峭度因子、脉冲因子均呈现增大趋势;随着转速的增大,峰值、均方根值与峭度因子、脉冲因子呈现相反的趋势;随着径向载荷、转速的增大,油膜参数也呈现相反的趋势。The traditional dynamic model does not consider the influence of elastohydrodynamic lubrication and the theoretical reference on multi-point failure of deep groove ball bearings is less.Based on the nonlinear Hertz contact theory and time-varying displacement excitation function,a two degree of freedom dynamic model of deep groove ball bearing with coupling failure considering the influence of elastohydrodynamic lubrication is established in this paper.The accuracy of the dynamic model is verified by the comparing amplitude-frequency characteristics between the fault bearing experiment and the simulation signal.Based on this model,the effects of defect width,radial load and rotating speed on typical time domain characteristic parameters and oil film parameters on bearing dynamics are analyzed in detail.

关 键 词：深沟球轴承 动力学建模 耦合缺陷 弹流润滑 

分 类 号：TH133.3[机械工程—机械制造及自动化]