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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18048
Title: Performance of two lobe multirecess hybrid journal bearing compensated with capillary restrictor
Authors: Kushare P.
Sharma S.C.
Jain S.C.
Sharana Basavaraja J.
Published in: Proceedings of 2007 ASME/STLE International Joint Tribology Conference, IJTC 2007
Abstract: Multirecess hydrostatic/hybrid journal bearings are being used in many applications owing to their excellent characteristics. The Noncircular journal bearing configurations too are quite frequently used in high speed machinery as they are efficient, less costly and provide better shaft stability. The Two lobe bearing (elliptical bearing) are among the commonly used noncircular journal bearing configuration. The multilobe multirecess hybrid journal bearings have been developed to combine the features of noncircular and circular hybrid journal bearing configurations. In the present work a theoretical investigation of a two lobe multirecess hydrostatic/hybrid journal bearing system have been carried out. The multilobe journal bearing configuration is designed as an arc of the circle with the centre points placed on the symmetry line of the single lobe. The journal offset has been accounted by defining an offset factor 'δ'. The finite element method has been used to solve the Reynolds equation governing the flow of lubricant in the clearance space of the journal bearing system. The bearing static and dynamic performance characteristics have been presented for the various values of the offset factors (0.75, 1, 1.25 and 1.50) for hybrid mode of operation of the bearing. The simulated results of the studies reveals that, a two lobe recessed hybrid journal bearing provides an improved performance in respect of fluid film stiffness and damping coefficients as compared to that of circular recessed journal bearing. It has been observed that for a multilobe bearing having offset factor more than one has a favourable effect on the dynamic performance characteristics of the two lobe bearing. Copyright © 2007 by ASME.
Citation: Proceedings of 2007 ASME/STLE International Joint Tribology Conference, IJTC 2007, (2008), 353- 355. San Diego, CA
URI: https://doi.org/10.1115/IJTC2007-44433
http://repository.iitr.ac.in/handle/123456789/18048
Issue Date: 2008
Keywords: Capillary restrictor
Fluid film stiffness
Hydrostatic bearings
Reynolds equation
Shafts (machine components)
Stiffness
System stability
Journal bearings
ISBN: 0791848108; 9780791848104
Author Scopus IDs: 24175764000
8142901100
23097893400
24176248000
Author Affiliations: Kushare, P., K. K. Wagh Institute of Engg. Education and Research, Nashik 422 003, India
Sharma, S.C., Indian Institute of Technology, Dept. of Mech. and Ind. Engg, Roorkee 247 667, India
Jain, S.C., Indian Institute of Technology, Dept. of Mech. and Ind. Engg, Roorkee 247 667, India
Sharana Basavaraja, J., B.M.S. College of Engineering, Dept. of Mech. Engg, Bangalore 560 019, India
Corresponding Author: Kushare, P.; K. K. Wagh Institute of Engg. Education and Research, Nashik 422 003, India
Appears in Collections:Conference Publications [ME]

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