CFD analysis of effect of misalignment plane position on hydrodynamic lubrication of slide conical bearing

• Autorzy: Czaban A.

Identyfikatory

DOI

10.5604/01.3001.0010.2901

• Języki publikacji: EN

Abstrakty

EN

The numerical calculations of the hydrodynamic lubrication of slide bearings can be carried out by modelling the oil flow for a given value of height of bearing lubrication gap. On the basis of the assumed height of the lubrication gap, the values of hydrodynamic pressures, load carrying capacities, friction forces, temperatures, can be determined. The bearing lubrication gap height can be influenced by many effects, e.g. misalignment between the shaft axis and the axis of the sleeve, vibrations, varying load, change in the viscosity value of lubricating oil caused by changes in temperature, pressure, shear rate or by oil ageing, wear of journal and sleeve surfaces. This article presents the results of numerical simulations concerning the influence of the misalignment between the axis of shaft and the axis of sleeve of the sliding conical bearing on its hydrodynamic lubrication, by taking into account the position of the plane in which the misalignment occurs. In this study, there was defined an angle between the plane in which the misalignment occurs and the plane in which lies the line of centres of corresponding bearing without misalignment. In this research, to investigate the impact of the position of the plane in which the misalignment occurs, the CFD software, designed to solve general flow phenomena, was used. It was assumed, that the bearings operate in a steady state conditions, the flow in the bearing lubrication gap is laminar and non-isothermal. A lubricating oil has shear properties as the Ostwald-de Waele fluid.

Słowa kluczowe

EN

slide bearing; hydrodynamic lubrication; conical bearing; misalignment; CFD; 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: 2017
• Tom: Vol. 24, No. 2
• Strony: 65--72
• Opis fizyczny: Bibliogr. 6 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 the Hydrodynamic Lubrication of Misaligned Slide Conical Bearing, Tribologia, 4/2016, 268, pp. 41-53, 2016
• [3] Li, Q., Liu, S., Pan, X., Zheng, S., A new method for studying the 3D transient flow of misaligned journal bearings in flexible rotor-bearing systems, Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 13(4), pp. 293-310, 2012.
• [4] Miszczak, A., Analiza hydrodynamicznego smarowania ferrocieczą poprzecznych łożysk ślizgowych, Fundacja Rozwoju Akademii Morskiej, Gdynia 2006.
• [5] 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.
• [6] Wierzcholski, K., Flow of pseudo-plastic non-Newtonian lubricant through the slide bearing curvilinear gap, International Congress on Tribology Eurotrib 85, Conference Proceedings, Lyon, pp. 1-5, 1985.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).