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Thermal Elastohydrodynamic Lubrication of Line Contact Considering the Thermal Elastic Deformation
2020By considering the radial thermal elastic deformation of line contact solid surface caused by lubricant temperature rise, a new numerical method is utilized to calculate the solution of thermal elastohydrodynamic lubrication (TEHL) in line contact.
Zunyou Lu, Yanjun Lu, Yongfang Zhang
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Tribology Letters, 2008
The classical ElastoHydroDynamic (EHD) theory assumes a Newtonian lubricant and an isothermal operating regime. In reality, lubricating oils do not behave as perfect Newtonian fluids. Moreover, in most operating conditions of an engineering system, especially at high speeds, thermal effects are important and temperature can no longer be considered as ...
Habchi, W. +4 more
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The classical ElastoHydroDynamic (EHD) theory assumes a Newtonian lubricant and an isothermal operating regime. In reality, lubricating oils do not behave as perfect Newtonian fluids. Moreover, in most operating conditions of an engineering system, especially at high speeds, thermal effects are important and temperature can no longer be considered as ...
Habchi, W. +4 more
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Thermal effects in elastohydrodynamic lubrication of line contacts using a non-Newtonian lubricant
Tribology International, 1991Abstract A Reynolds' equation, using Winer's viscoplastic model to express the non-Newtonian fluid property, is derived for line-contact EHL problems. The numerical solutions are obtained to the incorporated Reynolds', elasticity, and energy equations for pressure, film thickness, and temperature distribution between two surfaces simultaneously ...
T.-R. Lin, J.-F. Lin
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Size Effect on the Behavior of Thermal Elastohydrodynamic Lubrication of Roller Pairs
Journal of Tribology, 2012In order to investigate the size effect on elastohydrodynamic lubrication (EHL) of roller pairs, complete numerical solutions for both the Newtonian fluid and the Eyring fluid thermal EHL problems of roller pairs under steady state conditions have been achieved.
Xiaoling Liu, Jinlei Cui, Peiran Yang
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Thermal elastohydrodynamic lubrication analysis of deep groove ball bearing
Industrial Lubrication and Tribology, 2018Purpose The purpose of this study is to investigate the thermal elastohydrodynamic lubrication (TEHL) analysis of a deep groove ball bearing. Design/methodology/approach The TEHL model for the groove ball is first established, into which the elastic deformation is incorporated.
Xuefang Cui +3 more
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Numerical modelling of thermal effects in elastohydrodynamic lubrication solvers
2003The numerical modelling of thermal effects in elastohydrodynamic lubrication solvers is addressed by extending the code of the authors. This code is used to investigate the important effect of shear upon the temperature profiles for both a steady state and a transient line reversal example and also for a steady state point contact problem.
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A Refined Solution to the Thermal-Elastohydrodynamic Lubrication of Rolling and Sliding Cylinders
A S L E Transactions, 1965In this paper, a recent solution on the thermal-elastohydrodynamic lubrication of rolling and sliding cylinders is extended to consider a more rigorous analysis of temperature by using a two-dimensional finite difference method. The effect of the local pressure-temperature dependent viscosity, the compressibility effect of the lubricant and the heat ...
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A fast method for the numerical solution of thermal-elastohydrodynamic lubrication problems
Wear, 1996Abstract The paper presents a method for the numerical solution of the elastohydrodynamic lubrication problem in line contacts, which includes thermal and rheological effects. The method consists in alternating repeatedly the solution of a generalised Reynolds equation and of the energy equation.
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Line contact thermal elastohydrodynamic lubrication subjected to longitudinal vibration
2003Complete numerical analysis was carried out for the time-dependent, thermal elastohydrodynamic lubrication (EHL) of line contacts. It was assumed that the contact was composed of an infinite plane and an infinitely long roller. The surfaces were running in opposite directions so that a deep dimple was produced by the action of the thermal viscosity ...
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