Effect of Chamfer Form and Parameters on the Characteristics of Finite Length Journal Bearing under Impact Load

Journal bearings in typical applications are subjected to misalignment due several causes, such as shaft deformation under load and errors related the installation manufacturing processes. Misalignment has well-known severe negative consequences on performance of bearings. This paper deals with bearing chamfer reduce these misalignment, two forms edge modification considered analysis. These linear curved chamfering edges, where height circumferential direction length longitudinal geometrical design parameters. The investigation includes a numerical solution hydrodynamic lubrication problem finite journal bearing, considering 3D cases using difference method. assessment their effects terms main Furthermore, stability chamfered is also investigated impact load. Results showed that both beneficial for certain limit parameters reducing maximum pressure coefficient friction elevating film thickness levels, extending range which can operate safely. In addition, more critical speed center trajectories chamfer, slope continuous at start modification, uniform were closer perfectly aligned stable operating system.