Determination of optimum configuration among different configurations of two-axial groove hydrodynamic bearings

摘要

A steady-state hydrodynamic analysis of two-axial groove oil journal bearing is investigated in this paper. A computer program is developed to calculate the steady-state hydrodynamic characteristics. To study the various steady-state hydrodynamic characteristics of oil journal bearing, the nondimensional Reynolds' equation is solved to obtain nondimensional values of load-carrying capacity, flow rate, attitude angle, and friction variable. Nature of design parameters for different groove configurations is studied and using genetic algorithm, an optimized groove location is obtained for two-axial grooved bearing. It has been found that placing the groove on different locations have greater influence on the design parameters such as nondimensional oil flow rate, frictional variable, and nondimensional load-carrying capacity. From numerical simulation of two-axial groove bearing it has been found that the frictional variable and nondimensional load-carrying capacity is better for up-horizontal configuration and flow rate shows a maximum value for some up-up configuration.