基于滚动体时变能量的球轴承内圈剥落故障动力学建模  

DYNAMIC MODELING OF BALL BEARING INNER RING PEELING FAULT BASED ON ROLLING ELEMENT TIME-VARYING ENERGY

作　　者：董宝方 李宇鹏 李思慧 石怀涛[1] DONG BaoFang;LI YuPeng;LI SiHui;SHI HuaiTao(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]沈阳建筑大学机械工程学院,沈阳110168

出　　处：《机械强度》2024年第6期1302-1310,共9页Journal of Mechanical Strength

基　　金：辽宁省重点研发计划(2019JH2/10100014)资助。

摘　　要：剥落故障轴承动力学模型模拟的振动响应主要取决于滚动体经过缺陷区域时的能量变化。为建立基于滚动体经过缺陷区域时能量波动的动力学模型,根据几何关系推演出滚动体经过不同坡度剥落故障的运动轨迹,并基于赫兹接触理论和能量守恒定律构建出相应的时变能量公式,引入动力学模型中进行仿真模拟,量化了滚动体经过时能量的变化与振动响应的关系。仿真和试验结果吻合,证明了剥落故障轴承的振动响应与滚动体能量波动之间的关系,所建立的动力学模型能够准确地预测不同转速下剥落故障轴承的振动信号。The vibration response simulated by the dynamic model of a bearing with spall failure mainly depends on the energy change of the rolling element as it passes through the defective area.In order to establish a dynamic model based on the energy fluctuation of the rolling body when it passes through the defective area,the motion track of the rolling body peeling fault at different slopes was deduced according to the geometric relation.Based on the Hertz contact theory and the law of conservation of energy,the corresponding time-varying energy formula was constructed.The dynamic model was introduced for simulation,and the relation between the energy change and the vibration response of the rolling body when it passed was quantified.The simula⁃tion and experimental results are in good agreement,which proves the relation between the vibration response of the bearing with spall failure and the energy fluctuation of the rolling element.The established dynamic model can effectively predict the vibration signal of the bearing with spall failure.

关 键 词：滚动轴承 剥落故障 动力学建模 能量守恒 

分 类 号：TH113.1[机械工程—机械设计及理论]