Numerical analysis of influence of bearing material thermal conductivity coefficient on hydrodynamic lubrication of a conical slide bearing

• Autorzy: Czaban A.

Identyfikatory

DOI

10.5604/01.3001.0012.2781

• Języki publikacji: EN

Abstrakty

EN

One of the main parameters affecting the hydrodynamic lubrication of slide bearings is the viscosity of lubricating oil. Many studies show, that significant changes in the viscosity of oil occur along with changes in its temperature. The influence on the temperature distribution in the lubrication gap of the slide bearing have a variety of factors, and one of them is the amount of heat exchanged between the lubricant and the environment. The temperature of the lubricating oil of operating bearing is usually higher than the ambient temperature. In addition to the convection, which occurs during the flow (heat exchange related to the oil supply and discharge system) some amount of heat is transferred to the bearing sleeve material (and also to the bearing shaft), and then it is conducted to sleeve outer surface. The amount of heat transferred through the bearing sleeve is mainly dependent on the difference of temperatures between inner and outer sleeve surfaces and also depend on the heat conduction coefficient of sleeve material. This article presents the results of modelling of the influence of amount of heat conducted through the bearing material, on the hydrodynamic lubrication of a conical slide bearing. The study concerned various values of the heat conduction coefficient of the bearing material to investigate its influence on the temperature values of lubricating oil, and thus, on its viscosity, on the distribution of hydrodynamic pressure and on the calculated values of bearing load carrying capacities and friction forces.

Słowa kluczowe

EN

slide bearing; hydrodynamic lubrication; conical bearing; heat conduction; pressure distribution

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2018
• Tom: Vol. 25, No. 2
• Strony: 89--96
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Czaban A.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 81-87, 81-225 Gdynia, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Czaban, A., The influence of temperature and shear rate on the viscosity of selected motor oils, Solid State Phenomena, Vol. 199, pp. 188-193, 2013.
• [2] Czaban, A., CFD analysis of influence of axial position of shaft on hydrodynamic lubrication of slide conical bearing, Journal of KONES, Vol. 24, No. 3, pp. 37-44, Warsaw 2017.
• [3] Kostrzewa, S., Kowalczyk, S., Rożniatowski, K., Materiały stosowane w łożyskach ślizgowych – stan obecny i tendencje rozwojowe, Inżynieria Materiałowa, Vol. 28, Nr 5, pp. 840-845, Katowice 2007.
• [4] McKee, S. A., Friction and temperature as criteria for safe operation of journal bearings, U.S. Department of Commerce: Research Paper RP1295, Part of Journal of Research of the National Bureau of Standards, Vol. 24, Washington D.C. 1940.
• [5] Miszczak, A., Analiza hydrodynamicznego smarowania ferrocieczą poprzecznych łożysk ślizgowych, Fundacja Rozwoju Akademii Morskiej, Gdynia 2006.
• [6] Nowak, Z., Wierzcholski, K., Flow of a non-Newtonian power law lubricant trough the conical bearing gap, Acta Mechanica, Vol. 50, pp. 221-230, 1984.
• [7] Nowak, Z., Wierzcholski, K., Effect of a temperature dependent lubricant consistency on the capacity of a conical journal bearing, Proc. IX Intl. Congress on Rheology, pp. 583-589, Acapulco 1984.
• [8] Wierzcholski, K., Flow of pseudo-plastic non-Newtonian lubricant through the slide bearingcurvilinear gap, International Congress on Tribology Eurotrib 85, Conference Proceedings, pp. 1-5, Lyon 1985.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).