The determination of the pressure viscosity coefficient of a lubricant through an accurate film thickness formula and accurate film thickness measurements

Autor: van Hj Harry Leeuwen

Publikováno v: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 223(8), 1143-1163. SAGE Publications Ltd

The pressure—viscosity coefficient is an indispensable property in the elastohydrodynamic (EHD) lubrication of hard contacts, but often not known. A guess will easily lead to enormous errors in the film thickness. This article describes a method to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88afb88de50a93df2ab1435384159b9d
https://doi.org/10.1243/13506501JET504

Formation of Lubricant Film in Rotary Sealing Contacts: Part II—A New Measuring Principle for Lubricant Film Thickness

Autor: van Hj Harry Leeuwen, Marnix Visscher

Publikováno v: Journal of Tribology. 114:290-296

The development of models for the elastohydrodynamic lubrication of rotary lip seals requires the measurement of the film thickness under a real seal. A new method has been developed for this purpose which is based on the use of lubricant oils in whi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ceaf49fe5f997147056e7ee8097ae00
https://doi.org/10.1115/1.2920886

Visco-elastohydrodynamic (VEHD) lubrication in radial lip seals : part 1: Steady-state dynamic viscoelastic seal behavior

Autor: Mjl Stakenborg, van Hj Harry Leeuwen, ten Eam Hagen

Publikováno v: Journal of Tribology, 112(4), 578-583. American Society of Mechanical Engineers

In general, most analyses of radial lip seal behavior assume a static deformation state in the seal lip. Nevertheless, a dynamic excitation of the seal lip always occurs in practice, due to unroundness of the shaft or motions of the shaft center. In

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4ed6b21fd31fa707ee7123c84c2568b
https://research.tue.nl/nl/publications/008cde34-3cba-4ad4-95bd-a76595e6d632

Dynamic Analysis of Rocking Journal Bearings With Multiple Offset Segments

Autor: van Hj Harry Leeuwen, P. K. Goenka, J. F. Booker

Publikováno v: Journal of Lubrication Technology. 104:478-487

Novel “offset” designs offer greatly improved durability and reduced power loss in applications for which conventional journal bearings are only marginally satisfactory. They are particularly attractive for duty cycles which combine nonreversing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ffd54dded3cc20f49c6415db09c30e9
https://doi.org/10.1115/1.3253261

The Film Thickness in Piezoviscous-Rigid Regime; Film Thickness Lubrication Regimes Transition Criteria

Autor: van Hj Harry Leeuwen, L Houpert

Publikováno v: Journal of Tribology. 106:375-381

A new general formula is proposed to calculate the lubricant film thickness in the piezoviscous rigid lubrication regime. Equivalent radii ratio, load, speed, and material dimensionless parameters are included. New general criteria to decide whether

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15b383f0d9a5e3e804afea69cc9e5ec6
https://doi.org/10.1115/1.3260941