Cross-hatched groove influence on the load carrying capacity of parallel surfaces with random roughness

For parallel surfaces, i.e. the oil control ring, micro-geometry completely determines hydrodynamic lubrication (HL). The cross-hatched grooves provide a certain load carrying capacity (LCC) and surface (plateau) roughness can be an additional source. This paper extends earlier work to numerically solve pressure LCC of surfaces with random and/or grooves. influence groove spacing, width depth on is studied. Results show that larger higher LCC. Grooves generate large part when plateau small. However, for rough decrease wider or deeper grooves,