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http://dx.doi.org/10.9725/kts.2020.36.6.371

Comparison of Rolling Element Loads and Stress-based Fatigue Life Predictions for Ball Bearings  

Kwak, Jae Seob (Dept. of Mechanical Engineering, Pukyong National University)
Park, Yong Whan (Dept. of Mechanical Engineering, Pukyong National University)
Kim, Chan Jung (Dept. of Mechanical Design Engineering, Pukyong National University)
Kim, Tae Wan (Dept. of Mechanical Engineering, Pukyong National University)
Publication Information
Tribology and Lubricants / v.36, no.6, 2020 , pp. 371-377 More about this Journal
Abstract
In In this study, we compared the results of a ball bearing life prediction model based on rolling element loads with the results of fatigue life prediction of ball bearings when a stress-based contact fatigue life prediction technique is applied to the ball bearing. We calculate the load acting on each rolling element by the external load of the bearing and apply the result to the Lundberg-Palmgren (LP) theory to calculate ball bearing life based on the rolling element. We also calculate stress-based ball bearing life through contact and fatigue analyses based on contact modeling of the ball and raceway while considering the fatigue test results of AISI 52100 steel. In stress-based life prediction, we use three high-cycle fatigue-determination equations that can predict the fatigue life when multi-axis proportional loads such as rolling-slide contact conditions are applied. These equations are derived from the stress invariant and critical plane methods and the mesoscopic approach. Life expectancy results are compared with those of the LP model. Results of the analysis indicated that the fatigue life was predicted to be lower in the order of the Crossland, Dang Van, and Matake models. Of the three, the Dang Van fatigue model was found to be the closest to the LP life.
Keywords
ball bearing; fatigue life; L-P model;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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