The Role of Nano-Fluids and Surface Engineering in Hydrodynamic Sliding Bearings with Linear and Exponential Gap Functions

Abstract

Lubrication and the use of bearing’s role in high tech industries is very important. The increasing human knowledge has made many scientists pay attention to the development of hydrodynamic bearings. In recent years, there has been a lot of research in the field of bearings to increase their load carrying capacity and reducing the friction coefficient. Solutions of the Reynolds equations for real bearing positions are usually obtained in numerical approximations also analytical solutions are available for the most common forms of sliding bearings. In this research, at first, novel approaches of sliding bearings are considered; Then, the sliding bearings with exponential gap function are investigated by paying attention to the amount of  abrasion on the bearing surfaces and changing the flat surface to a curved one. Also, the effect of the nanoparticles due to abrasion under the oil viscosity performance are analyzed; finally, the practical characteristics of bearing surfaces and the effect of nanoparticles on the bearing’s load carrying capacity are compared. The validity of the procedure is investigated and good agreements are obtained