Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (3): 343-348.DOI: 10.12068/j.issn.1005-3026.2020.03.008

• Mechanical Engineering • Previous Articles     Next Articles

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
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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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