Inertia and Turbulence Effects on Dynamic Characteristics and Stability of Rotor-Bearings Systems

[+] Author and Article Information
Giuseppe Capone, Michele Russo

Dipartimento di Ingegneria Meccanica per I’Energetica, Università di Napoli, Napels, Italy

Riccardo Russo

Istituto di Ingegneria Meccanica, Università di Salerno, Salerno, Italy

J. Tribol 113(1), 58-64 (Jan 01, 1991) (7 pages) doi:10.1115/1.2920604 History: Received May 23, 1988; Revised July 12, 1990; Online June 05, 2008


The influence of turbulence and inertia of oil film on the dynamic characteristics and stability of rotor-bearings systems is theoretically analyzed for various Reynolds number values. The rotor is assumed to be rigid, symmetrical, balanced, and supported in two identical aligned journal bearings. The fluid film forces are evaluated under the short bearing assumption. Stiffness, damping, and acceleration coefficients, and the stability limit curves are reported versus modified Sommerfeld number for various Reynolds numbers and for radius-clearance ratio R/C = 500.

Copyright © 1991 by The American Society of Mechanical Engineers
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