东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (3): 343-348.DOI: 10.12068/j.issn.1005-3026.2020.03.008

• 机械工程 • 上一篇    下一篇

含局部故障的滚动轴承动力学建模及振动分析

马辉1,2, 李鸿飞1, 俞昆1, 曾劲1   

  1. (1.东北大学 机械工程与自动化学院, 辽宁 沈阳110819; 2.东北大学 航空动力装备振动及控制教育部重点实验室, 辽宁 沈阳110819)
  • 收稿日期:2019-08-28 修回日期:2019-08-28 出版日期:2020-03-15 发布日期:2020-04-10
  • 通讯作者: 马辉
  • 作者简介:马辉(1978-),男,河北安平人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(11772089); 中央高校基本科研业务费专项资金资助项目(N180708009,N170308028); 装备预研领域基金资助项目(61402100102); “兴辽英才计划”青年拔尖人才项目(XLYC1807008).

Dynamic Modeling and Vibration Analysis of Rolling Bearings with Local Fault

MA Hui1,2, LI Hong-fei1, YU Kun1, ZENG Jin1   

  1. 1.School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2.Key Laboratory of Vibration and Control of Aero-Propulsion System, Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2019-08-28 Revised:2019-08-28 Online:2020-03-15 Published:2020-04-10
  • Contact: MA Hui
  • About author:-
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摘要: 基于ANSYS/LS-DYNA软件建立了健康圆柱滚子轴承的二维显式有限元模型,并从轴承运动学的角度验证了本文所建有限元模型的有效性.在健康圆柱滚子轴承模型中引入利用圆周矩形模拟的内、外滚道局部剥落故障,建立含局部剥落故障的圆柱滚子轴承有限元模型,分析了故障区边缘单元的等效应力和滚子滚过内外圈局部缺陷的过程.将仿真结果与实验测试结果对比分析,证明了本文所建立的含局部剥落故障的圆柱滚子轴承有限元模型的正确性.在此基础上,研究了局部故障区域平滑程度对滚动轴承振动特性的影响,故障区域越平滑,振动响应越小.研究结果可为滚动轴承故障诊断提供一定参考.

关键词: 滚动轴承, 局部故障, 显式有限元, 动力学, 振动

Abstract: A two-dimensional explicit finite element (FE) model of healthy cylindrical roller bearings based on ANSYS/LS-DYNA software was established, and the availability of model was verified from the perspective of bearing kinematics. The FE model of cylindrical roller bearing with local spalling fault was developed by introducing local spalling fault into healthy inner and outer raceway, among which the local spalling was simulated by circumferential rectangle. The equivalent stress of the edge element of fault zone and the process of rolling through the local fault zone were analyzed. Comparing the simulation results with the experimental ones, the correctness of the FE model was confirmed. On this basis, the influence of smoothness of the local fault on the vibration characteristics of the rolling bearing was studied. The smoother the fault area, the smaller the vibration response. These results can provide some reference for the fault diagnosis of rolling bearings.

Key words: rolling bearing, local fault, explicit finite element, dynamics, vibration

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