Film Thickness in Elastohydrodynamically Lubricated Slender Elliptic Contacts: Part II – Experimental Validation and Minimum Film Thickness

Autor:	Marius Wolf, Petr Sperka, Josef Fryza, Arshia Fatemi
Rok vydání:	2022
Předmět:	Condensed Matter::Materials Science Condensed Matter::Superconductivity Mechanical Engineering Surfaces and Interfaces Surfaces Coatings and Films
Zdroj:	Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 236:2477-2490
ISSN:	2041-305X 1350-6501
DOI:	10.1177/13506501221080289
Popis:	In the first paper of this series, a new formula for central film thickness of slender contacts has been proposed. In this paper, interferometry measurement of the film thickness in slender elliptic contacts is performed for comparison with film thickness distribution of EHL simulation. The new film thickness formula presented in part I of this paper series is successfully validated by comparison with the experimental data. State-of-the-art minimum film thickness formulas are compared with the experimental results and results obtained through a multilevel EHL solver. Significant deviation of the analytical minimum film thickness formulas regarding both numerical and experimental results is given. Therefore, an alternative approach for calculation of minimum film thickness via the film thickness ratio with central film thickness is proposed, which yields promising results for moderately slender elliptic EHL contacts.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9d3dd40940bc02b921faba26dbe5e678 https://doi.org/10.1177/13506501221080289 Zobrazit plný text záznamu