Effects of geometrical nonlinearities for a rotating intentionally mistuned bladed-disk
Résumé
The present paper describes a computational methodology adapted to the analysis of the nonlinear dynamical behavior of a detuned bladed disk. The context of the analysis is the following : (1) the detuning is taken into account by voluntarily breaking the cyclic symmetry of the structure with the use of a pattern constituted of different blade types; (2) the structure is assumed to undergo large strain/displacements induced by the geometrical nonlinear effects; (3) the prestresses and the gyroscopic effects induced by the rotating motion are considered in the nonlinear dynamical analysis. The computational strategy has to be compatible with the industrial context. Consequently, a particular attention is paid to the construction of an adapted nonlinear reduced-order model. Finally, the proposed methodology is applied on a complex bladed disk structure.
Fichier principal
conference-2018-ISMA-Leuven-sept-17-19-picou-capiez-soize-mbaye-preprint.pdf (4.49 Mo)
Télécharger le fichier
Origine | Fichiers produits par l'(les) auteur(s) |
---|
Loading...