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A mixed lubrication model incorporating measured surface topography: Part 1: theory of flow factors
Siemens Industrial Turbomachinery AB.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-9110-2819
SKF Engineering & Research Center, Nieuwegein.ORCID iD: 0000-0001-9356-7599
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2010 (English)In: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, E-ISSN 2041-305X, Vol. 224, no 4, p. 335-351Article in journal (Refereed) Published
Abstract [en]

A mixed lubrication model that permits real three-dimensional surface topography as input is developed. The theory of computing flow factors within the model is presented, and with a following paper (Part 2) the method of measuring and adapting the surface roughness, and model validation through flow measurements and application to a bearing is shown. A contact mechanics model is used to calculate the elastoplastic displacement of a periodic topography signal. A method based on homogenization is used to calculate flow factors for all lubrication regimes. The flow factors are compared with the Patir and Cheng method. Results indicate that the two methods compare well for longitudinal roughness lay, but differ significantly for a cross-patterned surface roughness due to the more complete flow description of the current model.

Place, publisher, year, edition, pages
2010. Vol. 224, no 4, p. 335-351
Keywords [en]
Engineering mechanics - Fluid mechanics
Keywords [sv]
Teknisk mekanik - Strömningsmekanik
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-8575DOI: 10.1243/13506501JET658ISI: 000277675800003Scopus ID: 2-s2.0-77951134519Local ID: 71772350-4677-11df-a0f4-000ea68e967bOAI: oai:DiVA.org:ltu-8575DiVA, id: diva2:981513
Note
Validerad; 2010; Bibliografisk uppgift: SAGE Best Paper Award, 2010; 20100412 (rola)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Sahlin, FredrikLarsson, RolandAlmqvist, AndreasLugt, PietMarklund, Pär

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Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

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