A finite element approach to model thin films in circular EHD contacts

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dc.contributor.author Habchi, W.
dc.contributor.author Demirci, I.
dc.contributor.author Eyheramendy, D.
dc.contributor.author Morales-Espejel, G.
dc.contributor.author Vergne, P.
dc.contributor.editor Dowson, Duncan
dc.date.accessioned 2019-02-06T11:42:37Z
dc.date.available 2019-02-06T11:42:37Z
dc.date.copyright 2007 en_US
dc.date.issued 2019-02-06
dc.identifier.uri http://hdl.handle.net/10725/9987
dc.description.abstract Lubrication of machine elements such as gears and bearings appears to be essential for the good functioning of a mechanical system. In many applications, the pressure generated within tribological interfaces is high enough to induce elastic deformations at the surface of the contacting bodies. This lubrication regime is known as ElastoHydroDynamic (EHD) Lubrication. It involves a strong coupling between fluid mechanics, solid mechanics and lubricant rheology which makes the problem highly non-linear. So far, most of the numerical studies of lubricated contacts were carried out by using finite difference1, 2 or finite volume3 methods. More recently, CFD4 approach has been proposed to solve Navier-Stokes equations. The use of finite elements was limited to the case of journal bearings operating under hydrodynamic regime5, 6. In this work, we present a new approach for the numerical study of EHD circular contact using the finite element method (FEM) to solve the Reynolds equation, Boussinesq’s theory to calculate the elastic deformation of the surfaces and various physical laws to account the lubricant rheological behavior (WLF, Doolittle, Carreau). The advantage of choosing FEM is the availability of finite elements packages which permits to reduce the time spent in implementation and adapting the method to tribological applications. We use a multiphysics FEM software to solve the EHD circular contact and to obtain numerical results under broader operating conditions than those imposed during experiments. To reduce calculation time, we introduced multigrid method for solving the Reynolds equation and multi-integration technique for the elastic problem. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.title A finite element approach to model thin films in circular EHD contacts en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 200804200 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.publication.place Amsterdam en_US
dc.keywords Finite elements en_US
dc.keywords EHD lubrication en_US
dc.keywords Point contact en_US
dc.keywords Newtonian and non-Newtonian lubricant behaviour en_US
dc.keywords Multigrid techniques en_US
dc.identifier.ctation Demirci, I., Habchi, W., Morales, G., Eyheramendy, D., & Vergne, P. (2007). A finite elements approach to model thin films in circular EHD contacts. In 33rd Leeds Lyon Symposium on Tribology Tribology at the Interface. Elsevier en_US
dc.author.email wassim.habchi@lau.edu.lb en_US
dc.conference.date 12-15 September, 2006 en_US
dc.conference.place Leeds, Lyon en_US
dc.conference.subtitle proceedings of the 33rd Leeds-Lyon Symposium on Tribology en_US
dc.conference.title Tribology at the interface en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.researchgate.net/publication/281251213_A_finite_element_approach_to_model_thin_films_in_circular_EHD_contacts en_US
dc.publication.date 2007 en_US
dc.author.affiliation Lebanese American University en_US

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