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 of the performance of hole-entry hybrid journal bearing system has been investigated. The surface roughness, especially stationary roughness (i.e. rough bearing and smooth journal) with transverse pattern was found to partially compensate the loss in load carrying capacity due to the thermal and/or non-Newtonian behavior of lubricant effects quite significantly. 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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STLE/ASME 2006 International Joint Tribology Conference
October 23–25, 2006
San Antonio, Texas, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4259-2
PROCEEDINGS PAPER
Influence of Surface Roughness on Non-Newtonian Thermohydrostatic Performance of a Hole-Entry Hybrid Journal Bearing Available to Purchase
T. Nagaraju,
T. Nagaraju
P.E.S. College of Engineering, Mandya, India
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Satish C. Sharma,
Satish C. Sharma
Indian Institute of Technology-Roorkee, Roorkee, India
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S. C. Jain
S. C. Jain
Indian Institute of Technology-Roorkee, Roorkee, India
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T. Nagaraju
P.E.S. College of Engineering, Mandya, India
Satish C. Sharma
Indian Institute of Technology-Roorkee, Roorkee, India
S. C. Jain
Indian Institute of Technology-Roorkee, Roorkee, India
Paper No:
IJTC2006-12101, pp. 367-375; 9 pages
Published Online:
October 2, 2008
Citation
Nagaraju, T, Sharma, SC, & Jain, SC. "Influence of Surface Roughness on Non-Newtonian Thermohydrostatic Performance of a Hole-Entry Hybrid Journal Bearing." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics. San Antonio, Texas, USA. October 23–25, 2006. pp. 367-375. ASME. https://doi.org/10.1115/IJTC2006-12101
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