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Tribology Letters

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01.12.2022 | Original Paper

A Mixed EHL Analysis Method for Grease and Formulas for Film Thickness and Asperity Load

verfasst von: Miaojie Wu, Xu Han, Yourui Tao, Jiaxing Pei

Erschienen in: Tribology Letters | Ausgabe 4/2022

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Abstract

This paper introduces the grease average flow model considering non-Newtonian characteristics into the grease-mixed elastohydrodynamic lubrication (EHL) numerical analysis. On this basis, a method of grease EHL analysis is established with the roughness coupled indirectly. The effect of the rheological parameter on the variety law of the lubrication state is studied. The results show that the rheological parameter affects the lubrication state versus the dimensionless speed, material, and roughness. Finally, the film thickness and asperity load prediction formulas are derived based on the numerical simulation results, which are suitable for various greases obeying the Ostwald model.

Vorheriger Artikel Tactile Perception of Vellum Quantified by Friction and Surface Roughness

Nächster Artikel A New Model for Sphere Asperity Contact Analysis Considering Strain Hardening of Materials

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Titel: A Mixed EHL Analysis Method for Grease and Formulas for Film Thickness and Asperity Load
verfasst von: Miaojie Wu
Xu Han
Yourui Tao
Jiaxing Pei
Publikationsdatum: 01.12.2022
Verlag: Springer US
Erschienen in: Tribology Letters / Ausgabe 4/2022
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI: https://doi.org/10.1007/s11249-022-01666-4

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