Wear Characteristics of Plain Hydrodynamic Journal Bearings During Repeated Starting and Stopping

The Behavior of Plain Hydrodynamic Journal Bearings During Starting and Stopping

“…During the period when the shaft and bearing are in sliding contact, wear will take place a n d the measurements of the shaft's motion indicate that the wear will occur over a n arc o f the bearing extending from the vicinity of the initial contact point in the direction of shaft rotation. This is in agreement with wear tests made o n the same bearings a n d reported elsewhere (10). Moreover, it would be expected that the wear would be more pronounced when sliding contact was limited to a small arc of the bearing and this was again confirmed by the wear tests.…”

Edge loading and running-in wear in dynamically loaded journal bearings

“…These impacts affect the surface shape, the radial clearance and surface roughness. Older publications on this topic [2][3][4][5] highlighted through experiments that the shell roughness gets smoother during the running-in process especially in the very beginning. Another result implied that the final shell roughness of the worn region was similar to the harder journal roughness.…”

Modeling of hydrodynamic bearing wear in rotor-bearing systems

“…The emergence and development of wear in hydrodynamic bearings during start/stop cycles of rotating machines were first studied experimentally by Mokhtar [2]. In this case, the wear was easily noticeable, and changes in diametrical clearance, surface finishing and roundness of the bearing were measured after different operation cycles have been completed.…”