The Effect of Journal Misalignment on the Lubrication Performance of Partially Textured Journal Bearing with Elastic Deformation

Abstract

In order to analyse the effects of journal misalignment and elastic deformation on the lubrication performance of partially textured journal bearing, an elastic-hydrodynamic lubrication (EHL) model was specifically established based on the steady-state Reynolds equation. Through numerical calculation, the effects of elastic deformation, degree of misalignment and misalignment angle on load capacity and overturning moment were investigated. The results show that when the degree of misalignment is large, the elastic deformation cannot be ignored. With the increase of degree of misalignment, the load capacity and overturning moment are increased. With the increase of misalignment angle, the bearing performance variations are complicated. When the misalignment angle is equal to 90°, there are two pressure peaks in the film pressure. The load capacity is the lowest, and overturning moment is the largest. The optimized partial texturing is still beneficial to the performances of bearing when journal becomes misaligned, which is attributed to the additional hydrodynamic lift.