Influence of magnetic particles concentration in ferro-oil on values of friction force and coefficient of friction of slide journal bearing

• Autorzy: Frycz M. , Miszczak A.

Identyfikatory

DOI

10.5604/01.3001.0010.2807

• Języki publikacji: EN

Abstrakty

EN

This article has been focused on the analysis of changes in friction force as well as coefficient of friction of slide journal bearing in terms of the concentration of magnetic particles in the lubricating ferro-oil. There has been present an analytical and numerical calculation model based on experimentally determined physical quantities describing the dependence of ferro-oil’s viscosity on fundamental parameters such as temperature, pressure or external magnetic field in the paper. Numerical calculations of the dimensionless friction force as well as the dimensionless friction coefficient were performed by solving the Reynold’s type equation using the finite difference method using Mathcad 15 and own calculation procedures. The obtained results has been presented in the form of a series of graphs that take into account: the influence of external magnetic field, corrections related to the influence of pressure changes, corrections related to the influence of temperature changes and finally corrections related to non-Newtonian ferro-oil properties. An analysis of the obtained characteristics has been made so the observations and conclusions were drawn regarding optimum magnetic particle content in the ferro-oil lubricating the sliding journal bearing.

Słowa kluczowe

EN

ferro-oil; dynamic viscosity; magnetic particles concentration; friction force; friction coefficient

PL

lepkość dynamiczna; stężenie cząstek magnetycznych; siła tarcia; współczynnik tarcia

• 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. 1
• Strony: 143--150
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Frycz M.

• Gdynia Maritime University Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia, Poland tel.: [phone], fax: [phone]

autor

Miszczak A.

• Gdynia Maritime University Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Astarita, G., Marrucci G., Principles of non-Newtonian Fluid Mechanics. McGraw Hill Co, London 1974.
• [2] Bartz, W. J., Gleitlagertechnik, Expert Verlag, Grafenau 1981.
• [3] Böhme, G., Strömungsmechanik nicht-Newtonscher Fluide. Teubner Studienbücher Mechanik, Stuttgart 1981.
• [4] Frycz, M., Miszczak, A., Wzdłużne pole magnetyczne w szczelinie poprzecznego łożyska ślizgowego, Tribologia, Nr 6, str.77-86, 2011.
• [5] Frycz, M., The research and modeling of dynamic viscosity of ferro-oilswith different concentration of magnetic particles in the aspect of pressure changes, Tribologia (in press), 2017.
• [6] Frycz, M., The ferro-oils viscosity depended simultaneously on the temperature and magnetic oil particles concentration η=η(T,ϕ) – part I, Journal of KONES Powertrain and Transport, Vol. 23, No. 2, pp.113-120, 2016.
• [7] Frycz, M., Anioł, P., Impact of magnetic particles concentration in ferro-oil on its magnetic susceptibility coefficient χ, Journal of KONES Powertrain and Transport, Vol. 21, No. 3, pp. 139-144, 2014.
• [8] Frycz, M., Czaban, A., Models of viscosity characteristics η=η(B) of ferro-oil with different concentration of magnetic particles in the presence of external magnetic field, Journal of KONES Powertrain and Transport, Vol. 21, No. 4, pp. 119-126, 2014.
• [9] Kiciński, J., Hydrodynamiczne poprzeczne łożyska ślizgowe, Wydawnictwo Instytutu Maszyn Przepływowych PAN, Gdańsk 1996.
• [10] Miszczak, A., Analiza hydrodynamicznego smarowania ferrocieczą poprzecznych łożysk ślizgowych, Monografia, Fundacja Rozwoju Akademii Morskiej, Gdynia 2006.
• [11] Miszczak, A., Determination of variable pseudo-viscosity coefficients for oils with Rivlin-Ericksen preperties, Journal of KONES Powertrain and Transport, Vol. 20, No. 1, pp. 201-208, 2013.
• [12] Rosensweig, R. E., Ferrohydrodynamics, Dover Publications INC, Mineola, NewYork 1997.
• [13] Wierzcholski, K., Mathematical Methods of Hydrodynamic Theory of Lubrication. Politechnika Szczecińska, Monografia, No. 511, Szczecin 1993.
• [14] Wierzcholski, K., Miszczak, A., Adhesion influence on the oil velocity and friction forces in cylindrical microbearing gap, Zagadnienia Eksploatacji Maszyn, Vol. 45, 1 (161), pp.71-79, 2010.

Uwagi

PL

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