Global parametrization of the invariant manifold defining nonlinear normal modes using the koopman operator

Giuseppe I. Cirillo, Alexandre Mauroy, Ludovic Renson, Gäetan Kerschen, Rodolphe Sepulchre

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Résumé

Nonlinear normal modes of vibration have been the focus of many studies during the past years and different characterizations of them have been proposed. The present work focuses on damped systems, and considers nonlinear normal mode motions as trajectories lying on an invariant manifold, following the geometric approach of Shaw and Pierre. We provide a novel characterization of the invariant manifold, that rests on the spectral theory of the Koopman operator. A main advantage of the proposed approach is a global parametrization of the manifold, which avoids folding issues arising with the use of displacementvelocity coordinates.

langue originaleAnglais
titre11th International Conference on Multibody Systems, Nonlinear Dynamics, and Control
EditeurAmerican Society of Mechanical Engineers (ASME)
Volume6
ISBN (Electronique)9780791857168
Les DOIs
Etat de la publicationPublié - 2015
Modification externeOui
EvénementASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2015 - Boston, États-Unis
Durée: 2 août 20155 août 2015

Une conférence

Une conférenceASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2015
Pays/TerritoireÉtats-Unis
La villeBoston
période2/08/155/08/15

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