EHL studies on the effects of crowning value in roller bearings

摘要

The puropose of the paper is to present a comparison of numerical calculations and experiment results of finite line contact opticla interferometry for the EHL problem of Lundberg's profiled cylindrical roller under flooded,modereate load and material prameter conditions.They show clearly the effects of crowning value on the variations of oil film shape and thickness,and the agreement between numerical anlaysis and experiments is very good,which indicates there must e an optimum crowning value which will induce the thickest and most even oil film in EHL state for a given working condition,and htis value is larger than the design value in dry contact state for the same workign conditions