This paper proposes a numerical method to investigate the frictional characteristics of fluid film journal bearing considering elastohydrodynamic lubrication and asperity contact force. We solved average Reynolds equation by utilizing FEM determine hydrodynamic force developed lubricant bearing. also used modified GT model (Greenwood–Tripp model) Greenwood Tripp decompose into normal tangential...

The lifespan of journal bearings is directly related to the operating conditions they have face and reducing their maintenance intervals allows one a clear idea about performance when issues occur. presence scratches on its surfaces degrades bearing. These effects already been assessed in experiments; however, numerical studies this subject are still scarce. This work develops thermohydrodynami...

The performance of journal bearings is significantly affected by the presence misalignment, which usually an accompanying problem for this type bearing. This includes exceeding design limits maximum pressure and minimum film thickness levels, affect, in other words, load-carrying capacity system. In addition, it raises possibility increasing wear rate at bearing edges increases friction coeffic...

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 lin...

Hydrodynamic journal bearings, coated with polytetrafluoroethylene (PTFE) and lubricated by water, have been widely used in ships large-scale pumps, the function is to maintain stability of rotor system. However, slip velocity exists on PTFE-coated surface, whose effect still an open question. This study aims investigate static characteristics water-lubricated hydrodynamic bearings under three-...