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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18046
Title: Transient non-Newtonian-thermohydrodynamic analysis of a dynamically loaded journal bearing with 3D surface roughness effects
Authors: Jagadeesha K.M.
Nagaraju T.
Sharma S.
Jain S.C.
Published in: Proceedings of Society of Tribologists and Lubrication Engineers - 2008 Annual Meeting and Exhibition, Extended Abstracts
Abstract: The influence of 3D surface roughness on the transient non-Newtonian thermohydrodynamic response of a dynamically loaded journal bearing under mixed lubrication is studied. The transient study of journal bearing under mixed lubrication condition is performed including the effects 3D surface roughness parameters (i.e. roughness height, orientation and characteristics of surface roughness of opposing surfaces) and Variation of fluid viscosity across and along fluid-film thickness due to thermal and Non-Newtonian behavior of lubricant along with viscoelastic property of lubricant. The Reynolds equation and energy equation are modified to include the effects of surface roughness, viscosity variation across fluid-film and viscoelastic property of lubricant. The power law model and Maxwell model are employed to characterize shear thinning and viscoelastic properties of the lubricant respectively. The coupled solution of the modified average Reynolds, energy and heat conduction equations is obtained using finite element method and appropriate iterative schemes. Results are presented for an engine crankshaft main bearing under periodic loading. The bearing response is found to be significantly affected by the characteristics of surface roughness of opposing surfaces.
Citation: Proceedings of Society of Tribologists and Lubrication Engineers - 2008 Annual Meeting and Exhibition, Extended Abstracts, (2008). Cleveland, OH
URI: http://repository.iitr.ac.in/handle/123456789/18046
Issue Date: 2008
Keywords: Hydrodynamic bearings (general)
Surface roughness
Author Scopus IDs: 36185233500
6602634541
8142901100
23097893400
Author Affiliations: Jagadeesha, K.M., Automobile Engineering, P.E.S. College of Engineering, Mandya, KARNATAKA, India
Nagaraju, T., Automobile Engineering, P.E.S. College of Engineering, Mandya, KARNATAKA, India
Sharma, S., Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttaranchal, India
Jain, S.C., Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttaranchal, India
Corresponding Author: Jagadeesha, K.M.; Automobile Engineering, P.E.S. College of Engineering, Mandya, KARNATAKA, India
Appears in Collections:Conference Publications [ME]

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