Rough Surface Contact Modelling—A Review

It has been shown experimentally that boundary friction is proportional to load (commonly known as Amontons’ law) for more than 500 years, and the fact it holds true over many scales (from microns kilometres, from nano-Newtons Mega-Newtons) materials which deform both elastically plastically subject of much research, in order fully understand its wide applicability (and also find any deviations law). Attempts explain law recognise real surfaces are rough; such, researchers have studied contact rough under elastic plastic deformation conditions. As focus on energy efficiency ever increasing, machines now being used with lower-viscosity lubricants, operating at higher loads temperatures, such oil films separating moving becoming thinner, there a greater chance mixed/boundary lubrication occurring. Because occurs when two come into contact, thought timely review this topic current state theoretical experimental understanding rough-surface prediction regime.