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Article Dans Une Revue Key Engineering Materials Année : 2005

Stability Analysis of a Flexible Bladed-rotor


In any high-performance turbo-machinery, instability and damage are commonly occurring problems. The aim of this paper is to present a stability analysis of a fully-bladed flexible rotor. The flexural vibrations of the blades as well as those of the shaft are considered; the energetic approach used includes the effect of the rotational inertia. A stability detection method, bringing loci separation phenomena and coalescence, in case of an asymmetric rotor, to the fore, is made in order to determine a parametric domain where turbomachinery cannot encounter damage. Moreover, extensive parametric studies including for instance the length and the stagger angle of the blades are presented in order to obtain robust criteria for stable and unstable areas prediction. Finally, rotor/stator contact is introduced and the effect of the radial load acting on the blades when rubbing against a casing is considered.
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hal-00322910 , version 1 (05-02-2013)


  • HAL Id : hal-00322910 , version 1


Nicolas Lesaffre, Jean-Jacques Sinou, Fabrice Thouverez. Stability Analysis of a Flexible Bladed-rotor. Key Engineering Materials, 2005, 292-294, pp.409-416. ⟨hal-00322910⟩
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