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Film Thicknesses in Elastohydrodynamic Lubrication at High Slide/Roll Ratios
Proceedings of the Institution of Mechanical Engineers, Conference Proceedings, 1968The thicknesses of the films of lubricant formed between two steel discs in rolling and sliding contact have been estimated from measurements of the electrical capacity between the two discs. As the slide/roll ratio increased above a certain level the experimental values of the film thickness became progressively greater than the values predicted by ...
A. Dyson, A. R. Wilson
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Industrial Lubrication and Tribology, 2023
Purpose To further understand the granular flow lubrication mechanism in metal contact pairs, the effect of sliding-rolling ratio on the force chain properties was investigated. Design/methodology/approach The parallel inter-plate ...
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Purpose To further understand the granular flow lubrication mechanism in metal contact pairs, the effect of sliding-rolling ratio on the force chain properties was investigated. Design/methodology/approach The parallel inter-plate ...
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Journal of Tribology, 2000
Complete numerical solutions are obtained for the steady-state line contact thermal elastohydrodynamic lubrication (TEHL) problems. The contact surfaces are arranged to run in opposite directions. The slide-roll ratios are allowed to be as high as infinity.
Peiran Yang +3 more
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Complete numerical solutions are obtained for the steady-state line contact thermal elastohydrodynamic lubrication (TEHL) problems. The contact surfaces are arranged to run in opposite directions. The slide-roll ratios are allowed to be as high as infinity.
Peiran Yang +3 more
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Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2001
With tribology research aimed at decreasing energy consumption, two factors are inherently in focus: lubricant film thickness and traction. These factors are effectively decoupled and depend on lubricant properties which are sometimes contradictory-favourable for one factor and disadvantageous for the other.
J Lord, R Larsson
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With tribology research aimed at decreasing energy consumption, two factors are inherently in focus: lubricant film thickness and traction. These factors are effectively decoupled and depend on lubricant properties which are sometimes contradictory-favourable for one factor and disadvantageous for the other.
J Lord, R Larsson
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A Simple Calculation of EHL Traction at Small Slide/Roll Ratio Including Roller Elasticity
World Tribology Congress III, Volume 2, 2005Elastohydrodynamic point contact traction may be predicted accurately for the small slide-to-roll ratio, Σ, isothermal case by first calculating the shear response of the liquid in a parallel gap with a hemispherical pressure distribution and then correcting Σ for the elastic roller compliance.
Scott Bair, Michael Kotzalas
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Non-classical Elastohydrodynamic Lubricating Film Shape Under Large Slide-roll Ratios
Tribology Letters, 2007The authors showed in previous experiments with high viscosity polymeric lubricants that a non-classical elastohydrodynamic (EHL) film, which featured an inlet dimple, could be generated under pure sliding conditions. The phenomenon was tentatively attributed to boundary slippage.
Z. Fu, F. Guo, P. L. Wong
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Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2020
The behaviour of elastohydrodynamic contacts at high slide-roll ratios (SRR) differs markedly from that found in rolling conjunctions and at low SRRs. Behaviour is dominated by viscosity reduction due to shear-thinning and by temperature rises in the fluid and mating surfaces.
Chris Hooke +3 more
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The behaviour of elastohydrodynamic contacts at high slide-roll ratios (SRR) differs markedly from that found in rolling conjunctions and at low SRRs. Behaviour is dominated by viscosity reduction due to shear-thinning and by temperature rises in the fluid and mating surfaces.
Chris Hooke +3 more
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Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2014
In this study, the effect of high slide-roll ratio (2.0 ≤ S ≤ ∞) on thermal elastohydrodynamic lubrication in line contacts is explored numerically. The surface dimple produced by the heat transportation of the surface is explained. Furthermore, the deformation of the surface waviness under zero entrainment velocity is analyzed. The results show that,
Jing Wang +4 more
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In this study, the effect of high slide-roll ratio (2.0 ≤ S ≤ ∞) on thermal elastohydrodynamic lubrication in line contacts is explored numerically. The surface dimple produced by the heat transportation of the surface is explained. Furthermore, the deformation of the surface waviness under zero entrainment velocity is analyzed. The results show that,
Jing Wang +4 more
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Journal of Tribology, 2000
A full numerical solution for the thermal EHL problem in circular contact formed by steel-glass conjunctions with slide-roll ratios larger than 2 has been carried out. An anomalous film profile, which is similar to that reported by Kaneta et al. (1996), has been obtained.
Feng Guo, Peiran Yang, Shiyue Qu
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A full numerical solution for the thermal EHL problem in circular contact formed by steel-glass conjunctions with slide-roll ratios larger than 2 has been carried out. An anomalous film profile, which is similar to that reported by Kaneta et al. (1996), has been obtained.
Feng Guo, Peiran Yang, Shiyue Qu
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