Influence of wall porosity and surfaces roughness on the steady performance of an externally pressurized hydrostatic conical bearing lubricated by a Rabinowitsch fluid

• Autorzy: Walicka A. , Walicki E. , Jurczak P. , Falicki J.

Identyfikatory

DOI

10.1515/ijame-2017-0045

• Języki publikacji: EN

Abstrakty

EN

In the paper, the influence of both the bearing surfaces roughness as well as porosity of one bearing surface on the pressure distribution and load-carrying capacity of a curvilinear, externally pressurized, thrust bearing is discussed. The equations of motion of a pseudo-plastic Rabinowitsch fluid are used to derive the Reynolds equation. After general considerations on the flow in a bearing clearance and in a porous layer using the Morgan-Cameron approximation and Christensen theory of hydrodynamic lubrication with rough bearing surfaces the modified Reynolds equation is obtained. The analytical solution is presented; as a result one obtains the formulae expressing the pressure distribution and load-carrying capacity. Thrust radial and conical bearings, externally pressurized, are considered as numerical examples.

Słowa kluczowe

EN

pseudo-plastic fluid; Rabinowitsch model; curvilinear and conical thrust bearings; porous layer; Christensen roughness

PL

łożysko oporowe; warstwa porowata; model Rabinowitscha

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2017
• Tom: Vol. 22, no. 3
• Strony: 717--737
• Opis fizyczny: Bibliogr. 40 poz., wykr.

Twórcy

autor

Walicka A.

• University of Zielona Góra, Faculty of Mechanical Engineering, ul. Szafrana 4, 65-516 Zielona Góra, Poland

autor

Walicki E.

• University of Zielona Góra, Faculty of Mechanical Engineering, ul. Szafrana 4, 65-516 Zielona Góra, Poland

autor

Jurczak P.

• University of Zielona Góra, Faculty of Mechanical Engineering, ul. Szafrana 4, 65-516 Zielona Góra, Poland

autor

Falicki J.

• University of Zielona Góra, Faculty of Mechanical Engineering, ul. Szafrana 4, 65-516 Zielona Góra, Poland

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