滚动轴承内圈局部故障渐变动力学建模与分析  

MODELING AND ANALYSIS OF LOCAL FAILURE GRADUAL DYNAMICS OF ROLLING BEARING INNER RING

作　　者：尚志武[1,2] 庞海玉 高茂生 刘静宇 SHANG ZhiWu;PANG HaiYu;GAO MaoSheng;LIU JingYu(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China;Tianjin Key Laboratory of Modern Mechanical and Electrical Equipment Technology,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学机械工程学院,天津300387 [2]天津工业大学天津市现代机电装备技术重点实验室,天津300387

出　　处：《机械强度》2023年第4期778-784,共7页Journal of Mechanical Strength

基　　金：国家自然科学基金联合项目(U1733108)资助。

摘　　要：当滚动轴承内圈出现局部故障时会产生复杂的振动响应,从滚动轴承内圈实际故障形貌的渐变性和非规则性的客观实际出发,引入位移激励函数定性分析滚动体通过故障区域时球心位置的渐变规律,采用随机数列表征故障底部形貌非规则性的特点,综合考虑轴承的径向载荷和滚动体通过故障区域时的打滑率等因素,建立了一种内圈局部故障渐变的轴承动力学模型。通过对比分析不同转频条件下实验和仿真数据的故障特征频率值,验证了局部故障渐变动力学模型的准确性。When the rolling bearing has a local fault,it will produce a complex vibration response.From the objective reality and irregularity of the inner ring′s actual fault shape,the displacement excitation function is introduced to qualitatively analyze the gradual change of the ball position when it passes through the fault area,and a random number sequence is used to list the characteristics of the irregularity of the bottom.Considering the radial load of the bearing and the slipping phenomenon of the balls through the fault area,a bearing inner ring dynamics model of the local gradient fault is established,and the accuracy of the model is verified by comparing and analyzing the characteristic frequency values of the fault under different rotational conditions.

关 键 词：故障渐变 位移激励函数 随机数列 滑动率 故障特征频率 

分 类 号：TH133[机械工程—机械制造及自动化]