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interaction oscillateur mobile-poutre

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Dynamique en flexion de tubes parcourus à grandes vitesses
Quentin Lambert, André Langlet, Jérôme Renard, Nicolas Eches
Journal:

Mechanics & Industry / Volume 9 / Issue 6 / November 2008

Published online by Cambridge University Press:

16 May 2009, pp. 559-569

Print publication:

November 2008
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Ce travail porte sur la réponse temporelle d'une poutre à section et inertie variable, sollicitée par un chargement mobile. Dans un premier temps le chargement est apporté par une masse contrainte de se déplacer sur la poutre sans pouvoir s'en séparer. Dans un deuxième temps, le chargement est apporté par un oscillateur en mouvement sur la poutre. Cette modélisation sera confrontée à d'autres codes de calculs tels que LS-Dyna et SIMBAD. L'application concerne la dynamique des tubes d'armes couplée au projectile pendant son parcours balistique dans le tube. L'exploitation des modèles présentés a pour but d'obtenir une approximation des paramètres de sortie du projectile, lesquels, en constituant les conditions initiales du vol, influencent la dispersion à la cible.