Abstract
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 100 for a roller contact). The well known experiments of Wymer and Cameron have been quantitatively simulated and satisfactory agreement has been obtained. A modification coefficient of the Lundberg profile, δ, has been defined and it has been found that in EHL conditions the crowning value may be several times larger than that in the dry contact state. Both pressure and film thickness distributions should be considered in the EHL state and there is an optimum range of crowning value, expressed by δ as [δ 1, δ 2], for particular operating conditions. As load increases δ 1 increases and δ 2 is almost unchanged, and a smaller crowning value is needed for higher velocities. However, the effect of velocity on the crowning value is small compared with that of the load.
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References
A. Lubrecht, W. E. Ten Napel and R. Bosma, Multigrid, an alternative method for calculation film thickness and pressure profiles on the elastohydrodynamic lubricated line contacts, ASME J. Tribol. 108: 551–556 (1986).
H. Venner, Multilevel solution of the EHL line and point contact problems, Ph.D. Thesis, Twente University, Enschede, the Netherlands (1991).
D. G. Wymer and A. Cameron, Elastohydrodynamic lubrication of a line contact, Proc. Inst. Mech. Eng. 188: 221–238 (1974).
E. O. Stejskal and A. Cameron, Optical interferometry study of film formation in lubrication of sliding and/or rolling contacts, NASA Report, Lewis Research Center (1972).
H. Bahadoran and R. Gohar, End closure in elastohydrodynamic line contact, J. Mech. Eng. Sci. 16: 276–278 (1974).
A. Mostofi and R. Gohar, Elastohydrodynamic lubrication of a finite line contact, J. Lubric. Technol. 105: 598–604 (1983).
F. D. M. Barragan de Ling, H. P. Evans and R. W. Snidle, Thrust cones lubrication. Part 1: Elastohydrodynamic analysis of conical rims, Proc. Inst. Mech. Eng., Part J 210: 85–96 (1996).
F. D. M. Barragan de Ling, H. P. Evans and R. W. Snidle, Thrust cones lubrication. Part 2: Elastohydrodynamic analysis of conical rims, Proc. Inst. Mech. Eng., Part J 210: 97–105 (1996).
Park Tae-Jo and Kim Kyung-Woong, Elastohydrodynamic lubrication of a finite line contact, Wear 223: 102–109 (1998).
Xiaoyang Chen, Xuejin Shen, Wen Xu and Jiaju Ma, Elastohydrodynamic lubrication of logarithmic profile roller contacts, Chinese Journal of Mechanical Engineering, 14:347–352 (2001) (in Chinese).
M. Kushwaha, H. Rahnejat and R. Gohar, Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions, Proc. Inst. Mech. Eng., Part C 216: 1051–1069 (2002).
M. Kushwaha and H. Rahnejat, Transient Elastohydrodynamic lubrication of finite line conjunction of cam to follower concentrated contact, J. Phys. D: Appl. Phys. 35: 2872–2890 (2002).
Xiaoling Liu and Peiran Yang, Analysis of the thermal elastohydrodynamic lubrication of a finite line contact, Tribol. Int. 35: 137–144 (2002).
Haoyang Sun, Xiaoyang Chen and Peiran Yang, Thermal Elastohydrodynamic lubrication of cylindrical rollers with crown profiled ends at heavy load, Chinese Journal of Mechanical Engineering 40: 99–104 (2004) (in Chinese).
Peiran Yang and Shizhu Wen, A generalized Reynolds equation for non-Newtonian thermal elastohydrodynamic lubrication, ASME J. Tribol. 112: 631–636 (1990).
J. A. Roelands, Correlation aspects of viscosity-temperature-pressure relationship of lubricating oils, Ph.D. Thesis, Delft University of Technology, the Netherlands (1966).
Dowson, D. and G. R. Higginson, Elastohydrodynamic Lubrication, Pergamon Press, Oxford (1977).
Feng Guo and Peiran Yang, Influence of a ring flat zone in the point contact surface on thermal elastohydrodynamic lubrication, Tribol. Int. 32: 167–175 (1999).
A. P. Ranger, C. M. M. Ettles and A. Cameron, The solution of the point contact elastohydrodynamic problem, Proc. R. Soc. 346: 227–244 (1975).
G. Lundberg, Elastische Beruhrung zweier Halbraume, Forschung auf dem Gebiete des Ingenieurwesen 10: 201–221 (1939).
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Sun, H., Chen, X. (2006). Thermal EHL Analysis of Cylindrical Roller Under Heavy Load. In: Snidle, R.W., Evans, H.P. (eds) IUTAM Symposium on Elastohydrodynamics and Micro-elastohydrodynamics. Solid Mechanics and Its Applications, vol 134. Springer, Dordrecht . https://doi.org/10.1007/1-4020-4533-6_8
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DOI: https://doi.org/10.1007/1-4020-4533-6_8
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-4532-5
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