Nonlinear geometric analysis of a mistuned bladed disk
Résumé
This paper deals with the dynamical analysis and uncertainty quantification of a mistuned industrial rotating integrally bladed disk, for which the operating regime under consideration takes into account the nonlinear geometric effects induced by large displacements and deformations. First, a dedicated mean nonlinear reduced-order model of the tuned structure is explicitly constructed using three-dimensional solid finite elements. The random nature of the mistuning is then modeled by using the nonparametric probabilistic approach extended to the nonlinear geometric context. Such a computational strategy provides an efficient tool, which is applied to a computational model of an industrial centrifugal compressor with a large number of degrees of freedom. This allows for putting in evidence some new complex dynamical behaviors.
Fichier principal
conference-2015-Euromech-573-Lyon-France-August-25-27-capiez-soize-mbaye-preprint.pdf (138.24 Ko)
Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...