Experimental study on the mechanism of lubrication in hydrodynamic porous thrust bearings with a wavy surface

Hydrodynamic fluid lubrication theory is applied to thrust bearings with th ree-dimensional, wave-shaped axial end surfaces. Optimizations of the wave height and surface porosity are experimentally determined using lubrication characteristics such as the friction coefficient and worn-out surface cond itions. Lubrication characteristics such as the friction coefficient, tempe rature rise, thrust flotation, and oil consumption rate are evaluated for a n estimation of life expectancy. In this research, the results of this theo retical application on thrust bearings clearly showed considerable improvem ent over conventional thrust bearings. Furthermore, this experimental resea rch has clarified the lubrication conditions of various thrust-loaded axial end surfaces.