Results 81 to 90 of about 140 (123)

Thermal EHL Analysis of Circular Contacts With Measured Surface Roughness

Journal of Tribology, 1996
Abstract Time dependent thermal EHL circular contact results with measured surface roughness were obtained to analyze the effects of roughness on pressure, film thickness, temperature, and coefficient of friction. Both contact surfaces are considered to be rough.
Gang Xu, Farshid Sadeghi
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Analysis of thermal dynamic micro-EHL considering bearing assembly temperature

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2020
To investigate thermal failure of dynamic oil film in cylindrical roller bearings(CRBs), based on the temperature field of CRBs, non-Newtonian dynamic thermal elastohydrodynamic (TEHL) lubricating performance in cylindrical roller bearings was conducted.
Xiaoling Liu, Zhaoshun Xin, Jiangmin Zhou, Peiran Yang   +3 more
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The Navier–Stokes approach for thermal EHL line contact solutions

Tribology International, 2002
Abstract The complicated nature of the EHL-problem has so far forced researchers to develop their own computer codes. These codes are ultimately based on the Reynolds equation, and if thermal EHL-simulations are required, a simultaneous solution of the equation of energy also has to be performed.
T. Almqvist, R. Larsson
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A Parametric Analysis of the Thermal Shear Localization in EHL Films

World Tribology Congress III, Volume 1, 2005
Experiments and computer simulations [1] have revealed some unusual results of elastohydrodynamic lubrication (EHL) associated with a high degree of thermally induced inhomogeneous shear across the lubricant film, or thermal shear localization. The results include the development of a sizable film dimple in the central EHL region [2] and a dramatic ...
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Investigation on Thermal Distress and Scuffing Failure Under Micro EHL Conditions

2006
Scuffing is a degenerative form of adhesive wear caused by local welding between mating surfaces. Classical methods for scuffing prediction indicate the surface temperature rise (flash temperature) due to friction generated heat as the most important index to assess the risk of scuffing. Nowadays numerical analyses constitute a useful tool to provide a
A. POLACCO, G. PUGLIESE, CIULLI, ENRICO, G. M. BRAGALLINI, M. FACCHINI   +4 more
openaire   +2 more sources

Application of the Lobatto Quadrature Within Probabilistic Thermal Mixed EHL

ASME/STLE 2009 International Joint Tribology Conference, 2009
Refined solutions of thermal lubrication problems generally require fine mesh and many iteration steps. To solve these difficulties, Elrod and Brewe [1–2] proposed an efficient algorithm based on the use of Lobatto point quadrature. Within this approach, the unknown temperature across the film is written in a series of Legendre polynomials.
Laurentiu Moraru, Theo G. Keith
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Effects of Thermal Conductivity of Contacting Surfaces on Point EHL Contacts

Journal of Tribology, 2003
With actual and virtual materials, the effects of the thermal conductivity of contacting surfaces on EHL are investigated through experimental analyses using the optical interferometry technique and the Newtonian thermal EHL analyses in consideration of the variation of oil properties in all directions within the film. A mineral bright stock is used as
M. Kaneta, P. Yang
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Thermal Effect on a Mixture Lubrication with Oil-in-Water Emulsions in EHL Contacts

Tribology Transactions, 2020
A mixture model suitable for studying the thermal effect on elastohydrodynamic lubrication (EHL) of emulsions is proposed.
Rong-Tsong Lee, Kun-Ta Yang, Yuang-Cherng Chiou, Yu-Te Lin   +3 more
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Thermal EHL Analysis of Cylindrical Roller Under Heavy Load

2006
Full numerical solutions to finite line contact elastohydrodynamic lubrication (EHL) problems are presented. Using the multi-level multi-integration (MLMI) method and some dedicated numerical techniques, convergence has been obtained for severe working conditions (contact pressure can reach 1.0 GPa and the length-width ratio of contact area are over ...
Haoyang Sun, Xiaoyang Chen
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Thermal and Non-Newtonian Numerical Analyses for Starved EHL Line Contacts

World Tribology Congress III, Volume 1, 2005
Numerical analyses have been carried out for the elastohydrodynamic lubrication (EHL) in line contacts under both fully flooded and starved conditions. The thermal effect and the Ree-Eyring non-Newtonian flow have been taken into account. The relation between the inlet meniscus and the thickness of the available lubricant layer has been investigated ...
P. Yang, J. Wang, M. Kaneta
openaire   +1 more source