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Accueil du site > Évènements > Séminaires > Séminaires LMA > Archives LMA > 2015

Mardi 20 Janvier 2015 / LMA

publié le , mis à jour le

Séminaire LMA

"Nonsmooth modal analysis of vibratory systems undergoing purely elastic impacts"

Orateur : Stéphane Junca
Maître de Conférences, Université de Nice Sophia Antipolis, Laboratoire J.A. Dieudonné

Résumé : The framework of nonlinear normal modes (NNM) is extremely powerful to investigate the nonlinear vibrations of mechanical systems. An autonomous thin vibrating rod in contact against a frictionless rigid foundation is investigated in the form of a N -dof harmonic oscillator subjected to a purely elastic impact rule which preserves the total energy. We show that this system features a continuous set of periodic orbits supported by non-smooth sub-manifolds in the phase portrait. The physical solutions are subjected to a one-sided condition. Moreover, the stability of this solution is considered. This is a joint work with Mathias LEGRAND, McGill University and Sokly HENG, Royal Phnom Penh University.

Date et lieu : le 20 Janvier 2015 à 11h00, LMA, salle J. Perès, bât.C