Influence of a Levelness Defect in a Thrust Bearing on the Dynamic Behavior of an Elastic Shaft - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Sound and Vibration Année : 2002

Influence of a Levelness Defect in a Thrust Bearing on the Dynamic Behavior of an Elastic Shaft

Olivier Bonneau
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Jean Frêne
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Résumé

This paper examines the non-linear dynamic behaviour of a flexible shaft. The shaft is mounted on two journal bearings and the axial load is supported by a defective hydrodynamic thrust bearing at one end. The defect is a levelness defect of the rotor. The thrust bearing behaviour must be considered to be non-linear because of the effects of the defect. The shaft is modelled with typical beam finite elements including effects such as the gyroscopic effects. A modal technique is used to reduce the number of degrees of freedom. Results show that the thrust bearing defects introduce supplementary critical speeds. The linear approach is unable to show the supplementary critical speeds which are obtained only by using non-linear analysis.

Dates et versions

hal-00214263 , version 1 (23-01-2008)

Identifiants

Citer

Sébastien Berger, Olivier Bonneau, Jean Frêne. Influence of a Levelness Defect in a Thrust Bearing on the Dynamic Behavior of an Elastic Shaft. Journal of Sound and Vibration, 2002, 249, pp.41-53. ⟨10.1006/jsvi.2001.3801⟩. ⟨hal-00214263⟩
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