A general solution scheme to account the surface roughness and the cross-film viscosity variation of lubricant due to its non-Newtonian behavior and rise in fluid-film temperature for the analysis of fluid-film bearings is presented. The combined influence of surface roughness, non-Newtonian behavior of lubricant, and thermal effects on the performance of a hole-entry hybrid journal bearing system has been investigated. The surface roughness, especially stationary roughness (i.e., rough bearing and smooth journal) with a transverse pattern was found to partially compensate for the loss in load-carrying capacity due to the thermal and/or non-Newtonian behavior of lubricant effects. It limits 18.86% loss in load-carrying capacity due to the thermal effect to only 1.6% and 33.99% loss due to the combined influence of non-Newtonian lubricant and thermal effect to 16.76%.
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July 2007
Technical Papers
Influence of Surface Roughness on Non-Newtonian Thermohydrostatic Performance of a Hole-Entry Hybrid Journal Bearing
T. Nagaraju,
T. Nagaraju
P.E.S. College of Engineering
, Mandya 571 401, India
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Satish C. Sharma,
Satish C. Sharma
Department of Mechanical & Industrial Engineering,
Indian Institute of Technology Roorkee
, Roorkee 247 667, India
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S. C. Jain
S. C. Jain
Department of Mechanical & Industrial Engineering,
Indian Institute of Technology Roorkee
, Roorkee 247 667, India
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T. Nagaraju
P.E.S. College of Engineering
, Mandya 571 401, India
Satish C. Sharma
Department of Mechanical & Industrial Engineering,
Indian Institute of Technology Roorkee
, Roorkee 247 667, India
S. C. Jain
Department of Mechanical & Industrial Engineering,
Indian Institute of Technology Roorkee
, Roorkee 247 667, IndiaJ. Tribol. Jul 2007, 129(3): 595-602 (8 pages)
Published Online: March 10, 2007
Article history
Received:
March 10, 2006
Revised:
March 10, 2007
Citation
Nagaraju, T., Sharma, S. C., and Jain, S. C. (March 10, 2007). "Influence of Surface Roughness on Non-Newtonian Thermohydrostatic Performance of a Hole-Entry Hybrid Journal Bearing." ASME. J. Tribol. July 2007; 129(3): 595–602. https://doi.org/10.1115/1.2736451
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