Coupling strategies for finite element modeling of thermal elastohydrodynamic lubrication problems

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dc.contributor.author Habchi, W.
dc.date.accessioned 2018-01-03T12:08:52Z
dc.date.available 2018-01-03T12:08:52Z
dc.date.copyright 2017 en_US
dc.date.issued 2018-01-03
dc.identifier.issn 0041-2678 en_US
dc.identifier.uri http://hdl.handle.net/10725/6868
dc.description.abstract This paper investigates coupling strategies for finite element modeling (FEM) of thermal elastohydrodynamic lubrication (TEHL) problems. The TEHL problem involves a strong coupling between several physics: solid mechanics, fluid mechanics, and heat transfer. Customarily, this problem is split into two parts (elastohydrodynamic (EHD) and thermal) and the two problems are solved separately while an iterative procedure is established between their respective solutions. This weak coupling strategy involves a loss of information, as each problem is not made intimately aware of the evolution of the other problem's solution during the resolution procedure. This typically leads to slow convergence rates. The current work offers a full coupling strategy for the TEHL problem, i.e., both the EHD and thermal parts are solved simultaneously in a monolithic system. The system of equations is generated from a finite element discretization of the governing field variables: hydrodynamic pressure, solids elastic deformation, and temperature. The full coupling strategy prevents any loss of information during the resolution procedure leading to very fast convergence rates (solution is attained within a few iterations only). The performance of the full coupling strategy is compared to that of different weak coupling strategies. Out of simplicity, only steady-state line contacts are considered in this work. Nevertheless, the proposed methodology, results, and findings are of a general nature and may be extrapolated to circular or elliptical contacts under steady-state or transient conditions. en_US
dc.language.iso en en_US
dc.title Coupling strategies for finite element modeling of thermal elastohydrodynamic lubrication problems en_US
dc.type Article en_US
dc.description.version Published 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.relation.journal Journal of Tribology en_US
dc.journal.volume 139 en_US
dc.journal.issue 4 en_US
dc.article.pages 1-12
dc.keywords Thermal elastohydrodynamic lubrication en_US
dc.keywords Numerical modeling en_US
dc.keywords Coupling strategies en_US
dc.keywords Finite elements en_US
dc.identifier.doi http://dx.doi.org/10.1115/1.4034956 en_US
dc.identifier.ctation Habchi, W. (2017). Coupling Strategies for Finite Element Modeling of Thermal Elastohydrodynamic Lubrication Problems. Journal of Tribology, 139(4), 1-12. 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/articles.php en_US
dc.identifier.url http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=2569584 en_US
dc.author.affiliation Lebanese American University en_US

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