Affiliations: École Centrale de Lyon, Laboratoire de
Tribologie et Dynamique des Systèmes, Écully Cedex, France | Snecma, Safran group, Moissy-Cramayel, France
Note: [] Corresponding author: L. Blanc, École Centrale de Lyon,
Laboratoire de Tribologie et Dynamique des Systèmes, Équipe
Dynamique des Structures et des Systèmes, 36 avenue Guy de Collongue,
69134 cully Cedex, France. E-mail: laurent.blanc@ec-lyon.fr
Abstract: Stator vanes which are found in axial compressors are subject to
vibratory fatigue. Their division into monoblock sectors makes the prediction
of their vibratory behaviour difficult by deterministic methods due to the loss
of the cyclic symmetry properties and also to a high sensitivity to mistuning.
The purpose is to present a robust calculation strategy based on a stochastic
modelisation of the structure. The methodology has been developed first on a
simplified model and then applied to an industrial case. Polynomial chaos based
results are in good agreement with reference Monte Carlo simulations.
