Record Details

Hybrid (hydrodynamic plus permanent magnetic) journal bearings

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Hybrid (hydrodynamic plus permanent magnetic) journal bearings
 
Creator HIRANI, H
SAMANTA, P
 
Subject performance
axial force of permanent magnetic bearings
sector-shaped magnetic bearings
test setup for horizontal journal bearings
modelling of magnetic bearings
simulation of magnetic bearings
 
Description Survey of patents on bearings indicates the maturity of hydrodynamic and rapid development of magnetic bearings. Active magnetic bearings are costlier compared with permanent magnetic bearings. To understand the performance characteristics of permanent magnetic bearings, an experimental setup has been developed. Experimental studies on radial permanent magnetic bearings demonstrated the drawbacks, such as high axial thrust and low load capacity. This has led the authors to hybridize the permanent magnet with hydrodynamic technology and to explore the possibility of achieving the low starting torque of a permanent magnetic bearing and the medium to high load carrying capacity of a hydrodynamic bearing in a single bearing arrangement. Simulation is carried out in order to reduce axial force-effect and enhance the radial force supported by the permanent magnetic bearing. Results of simulation on permanent magnetic bearing have been compared with that of published research papers. Finally an algorithm has been developed to investigate the coupling of forces generated by permanent magnets and hydrodynamic actions. Results of load sharing have been reported. The experimentally measured displacements of the shaft running at 500, 2000, and 3000 r/min have been plotted. The effect of hydrodynamics on shaft orbit has been illustrated.
 
Publisher PROFESSIONAL ENGINEERING PUBLISHING LTD
 
Date 2011-08-27T08:02:57Z
2011-12-26T12:57:48Z
2011-12-27T05:45:23Z
2011-08-27T08:02:57Z
2011-12-26T12:57:48Z
2011-12-27T05:45:23Z
2007
 
Type Article
 
Identifier PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, 221(J8), 881-891
1350-6501
http://dx.doi.org/10.1243/13506501JET282
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11594
http://hdl.handle.net/10054/11594
 
Language en