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International Journal of Rotating Machinery
Volume 7, Issue 1, Pages 41-51
http://dx.doi.org/10.1155/S1023621X01000045

A Simplified Mass Conserving Algorithm for Journal Bearing under Large Dynamic Loads

1Department of Mechanical Engineering, Machine Dynamics and Maintenance Engineering Centre, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110 016, India
2lndustrial Tribology, Machine Dynamics and Maintenance Engineering Centre, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110 016, India

Received 16 March 1999; Revised 27 August 1999

Copyright © 2001 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A simplified mass conserving solution approach, consisting of analytical and numerical methods, for performance evaluation of dynamically loaded journal bearings is presented. The analytical technique is used to determine position and velocity of journal center for given force components. Subsequently a finite difference formulation of universal Reynolds equation is used to calculate realistic oil flow. The proposed formulation is applied for analysis of an engine main bearing. The entry and exit flow and maximum pressure in the bearing are determined over complete cycle and matched with published results obtained by numerical scheme. The suggested hybrid computational method typically takes 55 s on ICL DRS 6000, and 29 s on 150 MHz Pentium-Pro computer.