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RESEARCH PAPERS

A Fast Method for Calculating Dynamic Coefficients of Finite Width Journal Bearings With Quasi Reynolds Boundary Condition

[+] Author and Article Information
T. Kato, Y. Hori

The University of Tokyo, Tokyo 113, Japan

J. Tribol 110(3), 387-393 (Jul 01, 1988) (7 pages) doi:10.1115/1.3261640 History: Received July 01, 1987; Online October 29, 2009

Abstract

This paper presents a fast method for calculating the dynamic coefficients of the finite width journal bearings under quasi Reynolds boundary condition in which the trailing boundary line is given by a straight line and the continuity of bulk flow across this line is ensured. Calculated linear stiffness and damping coefficients agree well with the data of Lund and Thomsen [1]. The time required by this calculation with HITAC M682H is only 0.1–0.3 seconds (about 1/100 of the time required by the ordinary FDM), which suggests the possibility of real time journal bearing designs without using the database of the dynamic coefficients.

Copyright © 1988 by ASME
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