Contact Stress Analysis for Rollers and Inner Ring Assembly of Spherical Roller Bearing

Abstract

In most problems of stress analysis, the stress field is found within a solid body without regard for local effects caused by the application of the load. However, when two solid bodies with curved surfaces are forced together, consideration must be given to the special stress field created near the contact area. Gears and rolling element bearings are two notable examples of machine parts in which contact stresses are of great importance in determining the operating life. In such cases, area of contact changes according to variation in applied load. In this paper, an attempt has been made to analyze the spherical roller bearing particularly rollers and inner ring assembly based on Hertzian contact theory. Same analysis has also been performed using a numerical method in ANSYS. Comparison between analytical and numerical methods has been made for contact stress of the rollers and inner ring assembly.