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Dynamique en flexion de tubes parcourus à grandes vitesses

Published online by Cambridge University Press:  16 May 2009

Quentin Lambert ,
André Langlet ,
Jérôme Renard  and
Nicolas Eches
Quentin Lambert
Affiliation:
Institut PRISME, UPRES 4229/Équipe Risques Explosions Structures, Université d'Orléans, 63 avenue de Lattre de Tassigny, 18020 Bourges Cedex, France C.T.A. International, 8 route de Guerry, 18023 Bourges Cedex, France
André Langlet
Affiliation:
Institut PRISME, UPRES 4229/Équipe Risques Explosions Structures, Université d'Orléans, 63 avenue de Lattre de Tassigny, 18020 Bourges Cedex, France
Jérôme Renard
Affiliation:
Institut PRISME, UPRES 4229/Équipe Risques Explosions Structures, Université d'Orléans, 63 avenue de Lattre de Tassigny, 18020 Bourges Cedex, France
Nicolas Eches
Affiliation:
NEXTER Munition, 7 route de Guerry, 18023 Bourges Cedex, France
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Abstract

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.

Keywords

Non uniform Timoshenko beamfast dynamicsmoving loadmoving mass-beam interactionmoving oscillator-beam interactionPoutre de Timoshenko non uniformedynamique rapidecharge mobileinteraction masse mobile-poutreinteraction oscillateur mobile-poutre
Type
Research Article
Information
Mechanics & Industry , Volume 9 , Issue 6 , November 2008 , pp. 559 - 569
Copyright
© AFM, EDP Sciences, 2009

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