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POROUS CURVILINEAR SQUEEZE FILM BEARING WITH ROUGH SURFACES LUBRICATED BY A POWER-LAW FLUID

Volume 15, Edição 1, 2012, pp. 29-49
DOI: 10.1615/JPorMedia.v15.i1.30
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RESUMO

The flow of a power-law lubricant in a squeeze film bearing with one porous wall is considered. The bearing is modeled by two curvilinear rough surfaces and the porous wall adheres to the curved nonporous surface. The flow in the bearing clearance is considered without inertia and the momentum and Poisson equations are uncoupled by using the Morgan-Cameron approximation. A closed-form solution is obtained by using the Christensen stochastic model of surface roughness. A step bearing and a spherical bearing are discussed as examples. It is shown that the power-law exponent and the roughness influence the bearing performance considerably.

CITADO POR
  1. Walicka A., Walicki E., Jurczak P., Falicki J., Curvilinear squeeze film bearing with rough surfaces lubricated by a Rabinowitsch–Rotem–Shinnar fluid , Applied Mathematical Modelling, 40, 17-18, 2016. Crossref

  2. Sharma Satish C., Singh Anil, Behavior of Conical Porous Hybrid Journal Bearing with Pseudoplastic Lubricant, Tribology Transactions, 64, 3, 2021. Crossref

  3. Jurczak P., Falicki J., Pressure Distribution in a Squeeze Film Spherical Bearing with Rough Surfaces Lubricated by an Ellis Fluid, International Journal of Applied Mechanics and Engineering, 21, 3, 2016. Crossref

  4. Ma Jiaojiao, Zhang Hao, Shi Zhanqun, Liu Fulong, Gu Fengshou, Ball Andrew D., Modelling the Effect of Surface Roughness on Pressure Profiles in Hydrodynamic Journal Bearings, in Proceedings of IncoME-V & CEPE Net-2020, 105, 2021. Crossref

  5. Walicka A., Walicki E., Jurczak P., Falicki J., Curvilinear Squeeze Film Bearing with Porous Wall Lubricated by a Rabinowitsch Fluid, International Journal of Applied Mechanics and Engineering, 22, 2, 2017. Crossref

  6. Walicka A., Walicki E., Jurczak P., Falicki J., Influence of Wall Porosity and Surfaces Roughness on the Steady Performance of an Externally Pressurized Hydrostatic Conical Bearing Lubricated by a Rabinowitsch Fluid, International Journal of Applied Mechanics and Engineering, 22, 3, 2017. Crossref

  7. Singh Anil, Sharma Satish C., Influence of Percolation effect of additives on the Performance of Conical Textured Porous Hybrid Journal Bearing, Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2022. Crossref

  8. Tian Zhuxin, Li Bo, Threshold speed of short journal bearings considering the non-Gaussian longitudinal surface roughness, Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 236, 11, 2022. Crossref

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