Research on the vibration characteristics of the ball bearing considering the uncertain bearing-shaft interference fit

Liu, Yongzhen; Zhang, Heng‐Yi; Hu, Peng; Wang, Yan; Shi, Yufeng

doi:10.1177/09544062231167021

Cited by 2 publications

(1 citation statement)

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“…Scholars had conducted certain research on the assembly of bearings and shafts, and conducted wear experiments on the fitting relationship between bearings and shafts, forming a solid theoretical foundation [24]. Based on this, the impact of different initial fit relationships between shafts and bearings on the system has always been a hot research topic for scholars [25,26]. Unfortunately, the impact of assembly methods on the dynamic characteristics of faulty bearings, as well as whether they would affect the accuracy of bearing fault diagnosis and health monitoring, had not yet received sufficient attention.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the influence of temperature-variation clearance on the frequency of rolling bearing defects

An,

Gu,

Chen

et al. 2024

Meas. Sci. Technol.

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The clearance between the inner ring (IR) of rolling bearing and rotor is directly proportional to the temperature rise. The increased friction between the inner ring and rotor, as well as changes in the frequency of rolling bearing defects, and the accuracy of bearing health monitoring decreases. Existing research cannot effectively solve this problem. In response to the above issues, in this paper, the clearance between the bearing IR and the rotor and the internal clearance of bearing were considered, and the clearance was considered as the motion boundary of the rotor inside the IR, dynamic models of the bearing IR, outer ring (OR), and rolling element defects were established, and the trend of rolling bearing defects frequencies with temperature was analyzed, then the rationality of the dynamic models were verified through experimental methods. The research results show that the friction between the rotor and the IR increases with increasing temperature, and the speed of the IR decreases accordingly. The characteristic frequencies of defects in the IR, OR, and rolling element of rolling bearings have decreased by approximately 6.42%, 8.07%, and 6.93% compared to the theoretical values without considering temperature, respectively. This indicates that when identifying the frequency of rolling bearing defects at different temperatures, the frequency deviation caused by the increase in clearance between the IR and the rotor should be considered. The research results may serve as an important basis for fault diagnosis and condition monitoring of rolling bearings.

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Section: Introductionmentioning

confidence: 99%