Geometrical analysis of elliptical journal bearing lubricated with Newtonian fluid.

The primary function of a journal bearing is to hold up radial loads under different working conditions. In a journal bearing, in order to avoid metal to metal contact, the pressure is created in the thin lubricant oil film that detaches the shaft and the journal. For a Newtonian fluid, A generalized Reynolds equation has been applied to examine the geometrical analysis of Elliptical Journal Bearing. Further, the variation of film thickness and pressure profile with respect to circumferential angle has been plotted by considering the changes in parameters like eccentricity and non-circularity. The result shows that with the increase of eccentricity ratio the pressure gets increased whereas peak film thickness before and after convergence increases. With the help of a pressure profile, the load-bearing capacity of the bearing is obtained. In this study, MATLAB has been used as the programming tool and various routine of MATLAB graphics helps us to draw the results. For non-circularity of 0.7, the non-dimensional load-bearing capacity is estimated to be 2.25, 2.75, and 3.45 at journal eccentricities of 0.5, 0.7, and 0.9 respectively. [ABSTRACT FROM AUTHOR]