A fast thermoelastohydrodynamic model for dynamically loaded journal bearings behaviour analysis
Keywords:
thermoelastohydrodynamic lubrication, Reynolds equation, finite element, bearing, connecting rodAbstract
An efficient method for thermoelastohydrodynamic (TEHD) journal bearings lubrication analysis is presented. Lubrication film temperature is treated as a time-dependent two-dimensional variable and is averaged over the film thickness. In order to compute the film and solids temperature, a new heat flux conservation algorithm, based on both Finite Element (FEM) – Finite Volume (FVM) methods, is proposed. A key point in this analysis is the consideration of different heat transfer coefficients at film – solids and solids – surroundings boundaries. The Reynolds equation in the film is solved using the FEM discretization. A mass-conserving cavitation algorithm is applied and the effect of viscosity variation with the temperature is taken into account.
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References
Bonneau D., Hajjam M., “Modélisation de la Rupture et de la Réformation des Films
Lubrifiants dans les Contacts Elastohydrodynamiques”, Revue Européenne des Eléments
Finis, Vol. 10, 2001, pp. 679-704.
Ezzat H. A., Rohde S. M., “Thermal Transients in Finite Slider Bearings”, Transactions of
the ASME, Journal of Lubrication Technology, Vol. 96, 1974, pp. 315-321.
Fillon M., Souchet D., Frêne J., “Influence of Bearing Element Displacements on
Thermohydrodynamic Characteristics of Tilting-Pad Journal Bearings”, Proceedings of
the Japan International Tribology Conference, Nagoya’90, 1990, pp. 635-640.
Fillon M., Bligoud J.-C., Frêne J., “Experimental Study of Tilting-Pad Journal Bearings-
Comparison With Theoretical Thermoelastohydrodynamic Results”, Transactions of the
ASME, Journal of Tribology, Vol. 114, 1992, pp. 579-588.
Khonsari M. M., Wang S. H., “On The Fluid-Solid Interaction in Reference to
Thermoelastohydrodynamic Analysis of Journal Bearings”, Transactions of the ASME,
Journal of Tribology, Vol. 113, 1991, pp. 398-404.
Khonsari M. M., Wang S. H., “Notes on Transient THD Effects in a Lubricating Film”, STLE
Tribology Transactions, Vol. 35, 1992, pp. 177-183.
Mitsui J., “A Study of Thermohydrodynamic Lubrication in a Circular Journal Bearing”,
Tribology International, Vol. 20, 1987, pp. 331-340.
Paranjpe R. S., Han T.Y., “A Study of Thermohydrodynamic Performance of Steadily Loaded
Journal Bearings”, STLE Tribology Transaction, Vol. 37, 1994, pp. 679-690.
Piffeteau S., Modélisation du Comportement Thermoélastohydrodynamique d’un Palier de
Tête de Bielle sous Chargement Dynamique, Thèse de Doctorat de l’Université de
Poitiers, 1999.
Rohde S. M., Oh K. P., “A Thermoelastohydrodynamic Analysis of a Finite Slider Bearing”,
Transactions of the ASME Journal of Tribology, Vol. 97, 1975, pp. 450-460.
Souchet D., Piffeteau S., “Approche par la MEF de la Lubrification
Thermoélastohydrodynamique des Paliers de Tête de Bielle”, Revue Européenne des
Eléments Finis, Vol. 10, 2001, pp. 815-847.
