On the interest of a semi-empirical model for the tooth friction coefficient in gear transmissions
| Autor: | Yasser Diab, Fabrice Ville, Christophe Changenet, Pierre Navet, Thomas Touret, Nicolas Grenet De Bechillon, Jérôme Cavoret, Romain Quiban |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 235:2654-2663 |
| ISSN: | 2041-305X 1350-6501 |
| Popis: | Accurate modelling of friction coefficient is of primary importance in efficiency, vibration and failure analyses of enclosed gear drives. After showing the influence of surface/lubricant interactions on friction, the authors used a semi-empirical model which can take all these aspects into account. Lubricant is modelled as an Eyring–Reynolds fluid and rough surfaces are described with two parameters via a stochastic approach. A specific two-disc machine is used to perform series of friction measurements on smooth and rough discs. Smooth discs allow to operate under full film lubrication and to measure a reference shear stress of lubricant, whereas rough discs reproduce gear tooth roughness and generate a representative value of friction on asperities. The purpose of this present paper is to describe calculations of this physical-based friction coefficient model and to present the experimental process. On the basis of new results, the impact of a surface finishing process is assessed as well as the consequence of calculating friction coefficient based on oil injection instead of local bulk temperature. |
| Databáze: | OpenAIRE |
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