Effects of Differential Scheme and Mesh Density on EHL Film Thickness in Point Contacts
- 2 March 2006
- journal article
- research article
- Published by ASME International in Journal of Tribology
- Vol. 128 (3), 641-653
- https://doi.org/10.1115/1.2194916
Abstract
This paper investigates the effects of differential scheme and mesh density on elastohydrodynamic lubrication (EHL) film thickness based on a full numerical solution with a semi-system approach. The solution variation with different schemes and mesh sizes is revealed based on a set of numerical cases in a wide range of central film thickness from several hundred nanometers down to a few nanometers. It is observed that when the film is thick, the effects of differential schemes and mesh density are not significant. However, if the film becomes ultra-thin, e.g., below 10–20 nanometers, the influence of mesh density and differential schemes becomes more significant, and a proper dense mesh and differential scheme may be highly desirable. The present study also indicates that the solutions from the 1st-order backward scheme give the largest film thickness among all the solutions from different schemes at the same mesh size.Keywords
This publication has 15 references indexed in Scilit:
- A Computer Thermal Model of Mixed Lubrication in Point ContactsJournal of Tribology, 2004
- DISCUSSIONTribology Transactions, 2003
- A Computer Program Package for the Prediction of EHL and Mixed Lubrication Characteristics, Friction, Subsurface Stresses and Flash Temperatures Based on Measured 3-D Surface RoughnessTribology Transactions, 2001
- A Full Numerical Solution to the Mixed Lubrication in Point ContactsJournal of Tribology, 1999
- Numerical Simulation of a Transverse Ridge in a Circular EHL Contact Under Rolling/SlidingJournal of Tribology, 1994
- Inverse Solution of Reynolds’ Equation of Lubrication Under Point-Contact Elastohydrodynamic ConditionsJournal of Lubrication Technology, 1981
- Numerical solution of the point contact problem using the finite element methodInternational Journal for Numerical Methods in Engineering, 1977
- Isothermal Elastohydrodynamic Lubrication of Point Contacts: Part 1—Theoretical FormulationJournal of Lubrication Technology, 1976
- A unified treatment of thick and thin film elastohydrodynamic problems by using higher order element methodsProceedings of the Royal Society of London. Series A - Mathematical and Physical Sciences, 1975
- A Numerical Solution to the Elasto-Hydrodynamic ProblemJournal of Mechanical Engineering Science, 1959