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Similarities and differences between the flow factor method by Patir and Cheng and homogenization
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-7029-1112
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.ORCID iD: 0000-0003-1993-8229
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.ORCID iD: 0000-0001-8211-3671
2011 (English)In: Journal of tribology, ISSN 0742-4787, E-ISSN 1528-8897, Vol. 133, no 3, p. 031702-1Article in journal (Refereed) Published
Abstract [en]

Different averaging techniques have proved to be useful for analyzing the effects of surface roughness in hydrodynamic lubrication. This paper compares two of these averaging techniques, namely the flow factor method by Patir and Cheng (P&C) and homogenization. It has been rigorously proved by many authors that the homogenization method provides a correct solution for arbitrary roughness. In this work it is shown that the two methods coincide if and only if the roughness exhibits certain symmetries. Hence, homogenization is always the preferred method.

Place, publisher, year, edition, pages
2011. Vol. 133, no 3, p. 031702-1
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Mathematical Analysis
Research subject
Machine Elements; Mathematics
Identifiers
URN: urn:nbn:se:ltu:diva-9567DOI: 10.1115/1.4004078ISI: 000301647800020Scopus ID: 2-s2.0-79961187475Local ID: 8377cca3-3a0d-4274-9b94-55c1687d1a03OAI: oai:DiVA.org:ltu-9567DiVA, id: diva2:982505
Note
Validerad; 2011; Bibliografisk uppgift: Article number 031702 ; 20110826 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Almqvist, AndreasFabricius, JohnSpencer, AndrewWall, Peter

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