Dynamic Instability Analysis of Internally Damped Rotors - Archive ouverte HAL
Communication Dans Un Congrès Année : 2007

Dynamic Instability Analysis of Internally Damped Rotors

Résumé

This paper deals with the study of dynamic instabilities within rotating assemblies due to internal damping effects. In order to consider realistic mechanical properties, in terms of internal damping, a rheological model is associated to a general finite element beam approach, including transversal shear. After a description of the theoretical background (choice of internal damping model and equation of motion), an application illustrates the ability of the proposed model. The influence of damping on frequencies and on instability thresholds is investigated using a parametric study. Results are compared to those obtained from an analytical approach as well as from experiments.
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hal-04696312 , version 1 (13-09-2024)

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Rim Sino, Eric Chatelet, Olivier Montagnier, Georges Jacquet-Richardet. Dynamic Instability Analysis of Internally Damped Rotors. ASME Turbo Expo 2007, Power for Land, Sea and Air, IGTI 2007, May 2007, Montréal, Canada. pp.727-736, ⟨10.1115/GT2007-27073⟩. ⟨hal-04696312⟩
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