Identification of the Dynamic Coefficients of Hybrid Bearings

Abstract:

Within the linear region, the oil-film force increment of journal bearing is a fourdegree- of-freedom linear system. This paper presents an experimental method to identify hybrid bearing coefficients. Under various testing conditions described, experimental data are required on a complex test rig. An inverse technique based on least square method in time domain is developped for the coefficients identification. It results from the experimental data exploitation that the linear stiffness and damping coefficients are sensitive to the pressure feed, but the mass coefficients are insensitive.

• Periodical: Key Engineering Materials (Volume 482)
• Pages: 31-38
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.482.31
• Online since: June 2011
• Authors: Kossi Atchonouglo, Olivier Bonneau, Pascal Jolly, Claude Vallée
• Keywords: Bearing Dynamics, Damping, Flexible Shaft, Hybrid Bearing, Identification Mass, Linear Behavior, Stiffness Coefficient

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