Distributions of hydrodynamic pressure in the gap of slide journal bearing lubricated with ferro-oil

• Autorzy: Frycz Marcin

Identyfikatory

DOI

10.2478/kones-2019-0089

• Języki publikacji: EN

Abstrakty

EN

This research work is part of a broader comprehensive issue, which is the analysis of flow and operating parameters of journal slide bearings lubricated with ferro-oil. In this article, the author presents only the main assumptions and essential transformations of the analytical and numerical model for determining the pressure distributions in the gap of a slide journal bearing lubricated with ferro-oil. It is cardinal that the rheological and magnetic values of ferro-oil parameters adopted in numerical calculations are based on the results of actual values obtained in the author’s earlier research work. There are presented the pressure distributions by abovementioned method in the article for cases of bearings lubricated with ferro-oils with different concentration of magnetic particles. The obtained results are shown in the form of a set of four complementary characteristics of the dimensionless pressure distributions. First and main of them are the calculations for classical Newtonian lubrication but they take into account the influence of the magnetic field on the distributions. The next of the presented characteristics are so-called "corrections" of pressure distribution values, taking into account as follows: effects of changes in ferro-oil viscosity related to temperature changes, impacts of ferro-oil viscosity changes related to pressure changes and the effect of non-oil properties of the lubricant. The article includes a qualitative and quantitative analysis of the obtained results as well as observations and conclusions are presented in it.

Słowa kluczowe

EN

temperature distribution; journal slide bearing; ferro-oil

• 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: 2019
• Tom: Vol. 26, No. 4
• Strony: 53--61
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Frycz Marcin

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

Bibliografia

• [1] Dudziewicz, J., Podstawy elektromagnetyzmu, WNT, Warszawa 1972.
• [2] Frycz, M., The ferro-oils viscosity dependent simultaneously on the temperature and magnetic oil particles concentration η=η(T,φ) – part I, Journal of KONES. Powertrain and Transport, Vol. 23, pp. 113-120, 2016.
• [3] Frycz, M., The research and modelling of dynamic viscosity of the ferro-oils with the different concentrations of magnetic particles in the aspect of pressure changes, Tribologia. Teoria i Praktyka, Vol. 2, pp. 39-48, 2017.
• [4] Frycz, M., Effect of Temperature and deformation rate on the dynamic viscosity of ferrofluid, Solid State Phenomena, Vol. 199, pp. 137-142, 2013.
• [5] Frycz, M., Horak, W., Effect of the concentration of the magnetic particles in the ferrooil on its dynamic’s viscosity changes in an external magnetic field, Solid State Phenomena, Vol. 220-221, pp. 324-327, 2015.
• [6] Frycz, M., Miszczak, A., Influence of magnetic particles concentration in ferro-oils on values of friction force and coefficient of friction of slide journal bearings, Journal of KONES Powertrain and Transport, Vol. 24, pp. 143-150, 2017.
• [7] Frycz, M., Miszczak, A., Longitudinal magnetic field in the journal sliding bearing gap, Tribologia. Teoria i Praktyka, Nr 6 (240), pp. 77-85, 2011.
• [8] Frycz, M., Wpływ stężenia cząstek magnetycznych w ferrooleju na parametry przepływowe i eksploatacyjne poprzecznych łożysk ślizgowych, Wydział Mechaniczny UMG, 2018.
• [9] Frycz, M., Impact of temperature on magnetic susceptibility coefficient χ of ferro-oils with different concentration of magnetic particles, Tribologia, Teoria i Praktyka, Vol. 5, pp. 21-30, 2016.
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• [13] Miszczak, A., Analiza hydrodynamicznego smarowania ferrocieczą poprzecznych łożysk ślizgowych, Monografia. Fundacja Rozwoju Akademii Morskiej, Gdynia 2006.
• [14] Pawlak, W., Practical methods of dynamic objects identification Part I. Small perturbations method, Prace Instytutu Lotnictwa, Vol. 170-171, pp. 57-64, 1998.
• [15] Walicka, A., Rheology of fluids in mechanical engineering, Oficyna Wydawnicza Uniwersytetu Zielonogórskiego, Zielona Góra 2017.
• [16] Wierzcholski, K., Mathematical methods of hydrodynamic theory of lubrication, Politechnika Szczecińska, Monografia, Nr 511, Szczecin 1993.
• [17] Wierzcholski, K., Miszczak, A., Równania hydrodynamicznej teorii smarowania cieczą o cechach modelu Rivlina Ericksena, Zagadnienia Eksploatacji Maszyn, Vol. 31, Z. 3 (106), pp. 7-18, 1996.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).