S1160201 Computational Fluid Dynamics-Analysis and Measurement Vibration Characteristics in Small Bore Journal Bearings Having Two Oil Filler Holes

Abstract

In this paper, a stabilization method which can control an oil whipping utilizing the starved lubrication on small bore journal bearing is described. The effects of a number of oil filler holes and these oil supply angles on journal bearing characteristics are tested. As a result, it is found that the critical flow rate for stabilization temperature rise and film thickness in starved lubrication have been changed by changing the conditions of the oil filler hole. Moreover, the different in pressure distribution are confirmed by CFD (Computational Fluid Dynamic). Consequences, the problems of oil temperature and oil film thickness on stabilization method using the starved lubrication is considered to be solved by the proposed two oil filler holes method.