Nonlinear Effects in a Plain Journal Bearing: Part 2—Results

Abstract

Part 1 of this paper presented a numerical model that coupled the variable property Reynolds equation with a rotor dynamics model for the calculation of the nonlinear characteristics of a plain journal bearing working with a cryogenic fluid (LO2). Part 2 will present the numerical results yielded by the model that used (a) lubricant inlet temperature, (b) external load, (c) angular rotational speed, and (d) axial misalignment as input variables for the parametric study. The resulting pressure profiles and linear and nonlinear characteristics of the bearing are discussed and their inter-relationship is analyzed.