Fatigue life prediction of the radial roller bearing with the correction of roller generators

Abstract

The paper presents the methodology of fatigue life prediction of radial cylindrical roller bearings, which allows to take into account in the fatigue life calculation geometric parameters of the bearing, including radial clearance and the profiles of rollers. In addition, the methodology takes into account the effect of combined load and misalignment of the bearing rings on the fatigue life. The stress distributions which are necessary to calculate the predicted fatigue life were determined by solving numerically the Boussinesq problem for elastic half-space. The Lundberg and Palmgren model was used for the calculation of the predicted fatigue life of the bearing. The paper focuses on determining the effect of roller profiles on the bearing fatigue life. Pressure distributions obtained by the described methodology were compared to the distributions determined according to the finite element method. The calculated fatigue life of cylindrical roller bearing was compared with the experimental results.