Wiki Tag: Reynolds equation

Analytical Solution of Reynolds Equation: Grubin's Approximation

13.02.2017 tribonet

Derivation of famous analytical solution of EHL equations is presented here. In 1949, Grubin obtained a solution for so called elasto-hydrodynamic lubrication (EHL) line contact problem with simplifications known as Grubin approximation. He was the […]

Reynolds Equation: Derivation and Solution

12.11.2016 tribonet

Reynolds equation is a partial differential equation that describes the flow of a thin lubricant film between two surfaces. It is derived from the Navier-Stokes equations and is one of the fundamental equations of the […]

Introduction to Sealing Technology

18.01.2021

Let’s start from the beginning: what is a seal? A device or material that is used to close off or fasten an opening or connection, especially to prevent the escape of a liquid or gas. [...]
Superlubricity with Green Lubricant

12.09.2016

Superlubricity is a state of vanishing sliding friction. It has been reported in glycerol/water mixture lubricated contacts, graphene-gold interface, interface in presence of graphene and in other conditions. Increasing number of reports on superlubricity in [...]
Antiwear tribofilm growth - AFM study

14.03.2016

In a wide range of tribological components, the lubricant is not capable of separating the surfaces and areas of metal-to-metal contact occurs. However, the metal-to-metal contact area can be minimized by the action of additives, [...]
Reduced Friction: Inspired by Nature

28.01.2016

Darvin’s theory of evolution is widely held concept which states that all the life has evolved from a common ancestor: fruits, animals, trees, flowers. During the gradual process of evolution, beneficial random genetic mutations in [...]
Contact mechanics challenge results: a follow up discussion

05.02.2018

In 2015 Prof. Martin Müser of Saarland University in Saarbrücken, Germany initiated a contact mechanics challenge with a goal to provide tribologists with benchmarks to decide which method is the most appropriate for a particular problem. [...]