A full-system finite element approach to elastohydrodynamic lubrication problems

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dc.contributor.author Habchi, Wassim
dc.date.accessioned 2018-01-02T11:36:21Z
dc.date.available 2018-01-02T11:36:21Z
dc.date.copyright 2008 en_US
dc.identifier.uri http://hdl.handle.net/10725/6860
dc.description.abstract In this thesis, a full-system finite element approach to elastohydrodynamic (EHD) lubrication problems is introduced. EHD lubrication is a full-film regime where the pressure generated in the conjunction is high enough to induce a significant elastic deformation of the contacting bodies. Hence, it involves a strong coupling between hydrodynamic and elastic effects. The non-linear system formed by the Reynolds’, linear elasticity and load balance equations is solved using a fully-coupled Newton-Raphson procedure. This approach provides outstanding convergence rates when compared with the semi-system one. A penalty method is used to handle the cavitation problem that arises at the outlet of the contact. Appropriate stabilized formulations are used to extend the solution to the case of highly loaded contacts. The resolution process is then extended to account for non-Newtonian behaviour of the lubricant and for thermal effects. The developed model is used to study the behaviour of EHD contacts lubricated with Ultra-Low-Viscosity Fluids. The use of such fluids as lubricants provides two main advantages: first, the frictional energy dissipation in the contact is reduced and second, in machines that work with a low viscosity operational fluid and a lubricant, the former can be used to fulfil both functions and thus the design and maintenance of such machines would become easier and their performance would be improved en_US
dc.language.iso fr en_US
dc.title A full-system finite element approach to elastohydrodynamic lubrication problems en_US
dc.type Thesis en_US
dc.title.subtitle application to ultra-low-viscosity fluids en_US
dc.author.degree PHD 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.author.advisor Vergne, P.
dc.keywords EHD lubrication en_US
dc.keywords Fully coupled nonlinear finite elements, en_US
dc.keywords Ultra-low-viscosity lubricants en_US
dc.identifier.ctation Habchi, W., Vergne, P., Eyheramendy, D., & Morales-Espejel, G. E. (2008). A full-system finite element approach to elastohydrodynamic lubrication problems: application to ultra-low-viscosity fluids. University of Lyon, France. en_US
dc.author.email wassim.habchi@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/thesis.php en_US
dc.identifier.url http://theses.insa-lyon.fr/publication/2008ISAL0038/these.pdf en_US
dc.publisher.institution L’Institut National des Sciences Appliquées de Lyon en_US
dc.author.affiliation Lebanese American University en_US

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