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Low degree of freedom approach for predicting friction in elastohydrodynamically lubricated contacts
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0002-4271-0380
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, Machine Elements.ORCID iD: 0000-0001-9110-2819
2016 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 94, p. 560-570Article in journal (Refereed) Published
Abstract [en]

A low degree of freedom, semi-analytical model for rapid estimation of the friction coefficient in elastohydrodynamically lubricated contacts was developed and tested. Its estimates are based on the shear rate dependent Carreau equation for the apparent viscosity, together with the hydrodynamic pressure and the temperature of the lubricant. To validate the approach, the model's predictions were compared to experimental coefficient of friction measurements acquired using a ball-on-disc test device at various applied loads, entrainment velocities, and slide to roll ratios. The model’s predictions were in good agreement with the experimental results, showing that it is suitable for use in multibody dynamics analyses where rapid computation of elastohydrodynamic friction is required to minimize computing time and resource consumption.

Place, publisher, year, edition, pages
2016. Vol. 94, p. 560-570
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-15084DOI: 10.1016/j.triboint.2015.10.010ISI: 000367757000061Scopus ID: 2-s2.0-84946935189Local ID: e8c573ac-75f2-44b1-8d48-3c23d305738bOAI: oai:DiVA.org:ltu-15084DiVA, id: diva2:988057
Note
Validerad; 2015; Nivå 2; 20151019 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Shirzadegan, MohammadBjörling, MarcusAlmqvist, AndreasLarsson, Roland

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