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Academic literature on the topic 'Ondes de détonation – Interaction fluide-structure'
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Dissertations / Theses on the topic "Ondes de détonation – Interaction fluide-structure"
Barras, Guillaume. "Interaction fluide-structure : application aux explosions sous-marines en champ proche." Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10003/document.
Full textIn military shipbuilding, ships are designed to withstand conventional threats such as mines or torpedoes. These designs are based on calculations of structural response to underwater explosions in far field, what is relatively well controlled today. The thematic of underwater explosions has indeed benefited from extensive research since the Second World War. This has resulted in robust numerical methods to simulate the main phenomena that characterize such events. These methods used in engineering are based on assumptions that limit their scope. These restrictions are discriminatory when we attempt to simulate underwater explosions in near field which are mainly nonlinear phenomena. In this context, the Multi-Material Arbitrary Lagrangian-Eulerian method with Euler-Lagrange coupling is chosen to simulate these problems. To make the method more easily applicable in engineering, its adaptation is based on two points. (1) Firstly the method is developed for two-dimensional cases in order to solve 2D axisymmetric problems with higher speed and accuracy compared to 3D simulations. (2) Then the projection of results from two-dimensional analysis on 2D or 3D grids is implemented. The projection from one grid to the other allows solving the whole problem through successive phases for physics on very different time scales and space scales, what necessitates adapted meshes. The developments are implemented in LS-DYNA code for the revised version 5.1.1 and validated for the different phases of the problem from theoretical and experimental results
Chinnayya, Ashwin. "Construction de modèles et de méthodes numériques pour les écoulements multiphasiques à phases compressibles : application à la simulation des ondes de détonation dans les matériaux hautement énergétiques." Aix-Marseille 1, 2002. http://www.theses.fr/2002AIX11066.
Full textMahmadi, Kamal. "Modélisation des phénomènes d'ondes explosives." Lille 1, 2006. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2006/50376-2006-Mahmadi.pdf.
Full textTartière, Jérémie. "Prediction of deformation and residual stress in the high explosive hydroforming process using numerical simulation." Electronic Thesis or Diss., Brest, École nationale supérieure de techniques avancées Bretagne, 2022. http://www.theses.fr/2022ENTA0008.
Full textBefore the COVID-19 pandemic, Airbus was receiving more and more orders from aircraft, and was hoping, through high explosive hydroforming, to be able to meet more demands. To avoid additional costs for the development of a new technique, numerical simulation is used. However, the time required for calculation and engineering is too long and the accuracy is sometimes insufficient to allow easy integration into the various projects concerned. In addition, the viability of the process for industrialisation must be considered. To meet this need, the various steps related to High Explosive HydroForming are first identified. Firstly, the detonation is studied to allow a better understanding of the energy source acting during explosive forming. Next, the propagation of the shock wave from the underwater explosion is evaluated as well as the fluid-structure interaction in the case of explosive forming as defined within Airbus. Based on these considerations, a «FSILoad» tool, based on a semi-analytical approach, allowing the application of a pressure equivalent to the detonation of explosive cords is created. To ensure the correct definition of the aluminium alloy of which the part is made, this alloy is characterised by quasi-static uni-axial tensile tests, dynamic tests via Hopkinson bars and laser shock. A digital model is created using this new input data. During high explosive hydroforming, the residual stresses resulting from the simulation are compared to the experiment and an analytical model is defined to allow the identification of influential parameters. Finally, the parameters likely to affect the final deformation in simulation are identified, the viability of the FSILoad tool quantified and the repeatability of the process to meet an evaluated industrial need
Gout, d'Henin Emmanuelle. "Ondes de Stoneley en interaction fluide-structure." Poitiers, 2002. http://www.theses.fr/2002POIT2263.
Full textAlia, Ahlem Souli Mhamed. "Simulation numérique en vibroacoustique et en interaction fluide structure." Villeneuve d'Ascq : Université des sciences et technologies de Lille, 2007. https://iris.univ-lille1.fr/dspace/handle/1908/1022.
Full textN° d'ordre (Lille 1) : 3849. Résumé en français. Titre provenant de la page de titre du document numérisé. Bibliogr. p. 151-159.
Alia, Ahlem. "Simulation numérique en vibroacoustique et en interaction fluide structure." Lille 1, 2006. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2006/50376-2006-Alia.pdf.
Full textElhabre, Bou Obeid Marie Louise. "Modélisation de l'intéraction sismique sol-fluide-parois moulées suivant une approche périodique." Châtenay-Malabry, Ecole centrale de Paris, 2000. http://www.theses.fr/2000ECAP0651.
Full textTakahashi, Takéo. "Analyse théorique, analyse numérique et contrôle de systèmes d'interaction fluide-structure et de systèmes de type ondes." Habilitation à diriger des recherches, Université Henri Poincaré - Nancy I, 2008. http://tel.archives-ouvertes.fr/tel-00590675.
Full textFacchinetti, Matteo Luca. "Un modèle phénoménologique des vibrations induites par détachement tourbillonnaire." Palaiseau, Ecole polytechnique, 2003. http://www.theses.fr/2003EPXX0003.
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