1. School of Mechatronics, Henan University of Science and Technology, Luoyang 471003, China；
2. Luoyang Bearing Research Institute Co., Ltd., Luoyang 471039, China
Abstract：In view of the decline of wear resistance of bearing materials and the decrease of lubricant viscosity under high temperature environment, it is difficult to completely form oil film, The bearing is very easy to wear, and the dynamic performance of the bearing degrades gradually. In this paper, the nonlinear factors such as temperature, clearance, stiffness, contact load and other nonlinear factors are considered to establish the dynamic model of high temperature angular contact ball bearing under wear condition.Based on the numerical results, the evolution law of bearing wear degree on bearing dynamic performance is analyzed and verified by test. The results show that the wear rate of the bearing inner ring is higher than that of the outer ring. In the wear evaluation, we can only pay attention to the wear of the inner ring. In the working process of bearing wear, when the bearing wear is slight, the bearing motion stability is improved with the wear time. When the bearing wear is serious, the vibration velocity increases sharply and the stability of motion state deteriorates. The change of vibration state can be used as the judgment basis of bearing accuracy failure.
Key words: High temperature; angular contact ball bearing; wear; dynamic characteristics
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