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Surface roughness effects in a curvilinear squeeze film bearing lubricated by a power-law fluid

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Języki publikacji
EN
Abstrakty
EN
The flow of a power-law lubricant in a squeeze film bearing is considered. The bearing is modelled by two curvilinear rough surfaces. The flow in the bearing clearance is considered without inertia. Using the Christensen stochastic model of a surface roughness the closed-form solution is obtained. A step bearing and a spherical bearing are discussed as examples. It is shown that the power-law exponent and the roughness considerably influence the bearing performance.
Rocznik
Strony
277--293
Opis fizyczny
Bibliogr. 22 poz., wykr.
Twórcy
autor
Bibliografia
  • Agrawal V.K. (1970): Effect of lubricant inertia on squeeze film in spherical bearing. - Jap. J. Appl. Phys., vol.9, No.7, pp.831-833.
  • Andharia P.I., Gupta J.L. and Deheri G.M. (1999): Effect of transverse surface roughness on the behavior of squeeze film in a spherical bearing. - Proc. Int. Conf.: Problems of Non-Conv. Bearing Systems NCBS'99, Appl. Mech. Eng., vol.4, Spec. Issue, pp.19-24.
  • Andharia P.I., Deheri G.M. and Gupta J.L. (2001): Effect of longitudinal surface roughness on the behaviour of squeeze film in a spherical bearing. - Int. J. Appl. Mech. Eng., vol.6, No.4, pp.885-897.
  • Christensen H. (1969-1970): Stochastic model for hydrodynamic lubrication of rough surfaces. - Proc. Inst. Mech. Engrs, vol.184, pt 1, 1969-1970, pp.1013-1022.
  • Christensen H. and Tøonder K. (1971): The hydrodynamic lubrication of rough bearing surfaces of finite width. - ASME, J. Lubric. Technol., vol.93, No.2, pp.324-330.
  • Christensen H. and Tønder K. (1973): The hydrodynamic lubrication of rough journal bearings. - ASME, J. Lubric. Technol., vol.95, No.1, pp.166-172.
  • Gould F. (1975): High-pressure spherical squeeze films. - J. Lubric. Technol. Trans. ASME, ser. F, vol.97, No.1, pp.207-208.
  • Gururajan K. and Prakash J. (1999): Surface roughness effects in infinitely long porous journal bearing. - Journal of Tribology, Trans. ASME, vol.121, No.1, pp.139-147.
  • Jurczak P. (2004): Influence of the lubricant kind on mechanical parameters of thrust bearings with a porous pads (in Polish). - PhD Thesis, University of Zielona Gora, pp.1-140.
  • Lin J.-R. (2000): Surfaces roughness effect on the dynamic stiffness and damping characteristics of compensated hydrostatic thrust bearings. - Int. J. Machine Tools Manufact., vol.40, pp.1671-1689.
  • Lin J.-R. (2001): The effect of couple stresses in the squeeze film behavior between isotropic rough rectangular plates. - Int. J. Appl. Mech. Eng., vol.6, No.4, pp.1007-1024.
  • Murti P.R.K. (1975): Squeeze film in curved circular plates. - J. Lubric. Technol. Trans. AME, ser F, vol.97, No.4, pp.650-654.
  • Prakash J. and Tiwari K. (1984): An analysis of the squeeze film between rough porous rectangular plates with arbitrary porous wall thickness. - Journal of Tribology, Trans. ASME, vol.106, No.2, pp.218-222.
  • Prakash J. and Tiwari K. (1985): Effects of surface roughness on the squeeze film between rectangular porous annular disc with arbitrary porous wall thickness. - Int. J. Mech. Sci., vol.27, No.3, pp.135-144.
  • Vora K.H. (1980): Behaviour of squeeze film between curved circular plates with a concentric circular pocket. - Wear, vol.65, pp.35-38.
  • Walicka A. (1989): Accurate and Asymptotic Solutions of Simplified Sets of Equations Describing the Motion of Viscous Fluids in a Slot Bounded by Two Coaxial Surfaces of Revolution (in Polish). - Warszawa: WNT, pp.1-130.
  • Walicka A. (2002): Rheodynamics of Non-Newtonian Fluids Flow in Straight and Curved Channels (in Polish). - Zielona Gora: University Press, pp.1-307.
  • Walicka A. and Walicki E. (2002a): Surface roughness effect on the pressure distribution in curvilinear thrust bearings. - Exploitation Problems of Machines, No.3 (131), pp.157-167.
  • Walicka A. and Walicki E. (2002b): Couple stress and surface roughness effects in curvilinear thrust bearings. - Int. J. Appl. Mech. Engng, vol.7, Spec. Issue: SITC, pp.109-117.
  • Walicka A. and Walicki E. (2004): Rotational inertia and surface roughness effect in curvilinear thrust bearings. - Int. J. Appl. Mech. Engng, vol.9, Spec. Issue: ITC 2004, pp.329-336.
  • Walicka A. and Walicki E. (2005): Rotational inertia and surface roughness effects In curvilinear thrust bearings lubricated by a couple-stress fluid. - Int. J. Appl. Mech. Engng, vol.10, No.3, pp.527-541.
  • Walicki E. (2005): Rheodynamis of Bearings Lubrication (in Polish). - Zielona Góra: University Press, pp.1-556.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0040-0035
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