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Academic literature on the topic 'Aéroélasticité – Modèles mathématiques'
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Dissertations / Theses on the topic "Aéroélasticité – Modèles mathématiques"
Mer, Katherine. "Modèles de viscosités du quatrième ordre pour l'advection-diffusion en maillage non-structuré." Nice, 1996. http://www.theses.fr/1996NICE5048.
Full textChan, Frédérik. "Étude et développement d'un modèle aéroélastique d'un petit véhicule de lancement spatial." Master's thesis, Université Laval, 2012. http://hdl.handle.net/20.500.11794/23773.
Full textNitschke, Christian Thomas. "Quantification d'incertitudes aléatoires et épistémiques dans la prédiction d'instabilités aéroélastiques." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS022/document.
Full textThe critical flutter velocity is an essential factor in aeronautic design because it caracterises the flight envelope outside which the aircraft risks to be destroyed. The goal of this thesis is the study of the impact of uncertainties of aleatory and epistemic origin on the linear stability limit of idealised aeroelastic configurations. First, a direct propagation problem of aleatory uncertainties related to manufacturing parameters of a rectangular plate wing made of a laminated composite material was considered. The representation of the material through the polar method alleviates the constraint of the high number of dimensions of the initial stochastic problem, which allows the use of polynomial chaos. However, the correlation which is introduced by this parametrisation requires an adaption of the polynomial basis. Finally, a machine learning algorithm is employed for the treatment of discontinuities in the modal behaviour of the aeroelastic instabilities. The second part of the thesis is about the quantification of modelling uncertainties of epistemic nature which are introduced in the aerodynamic operator. This work, which is conducted based on a Bayesian formalism, allows not only to establish model probabilities, but also to calibrate the model coefficients in a stochastic context in order to obtain robust predictions for the critical velocity. Finally, a combined study of the two types of uncertainty allows to improve the calibration process
Soumillon, Stéphane. "Phénoménologie et modélisation d'écoulements aérodynamiques instationnaires décollés pour la prévision des phénomènes aéroélastiques liés au tremblement des avions civils." Toulouse, ENSAE, 2002. http://www.theses.fr/2002ESAE0008.
Full textDebiez, Christophe. "Approximation et linéarisation d'écoulements aérodynamiques instationnaires." Nice, 1996. http://www.theses.fr/1996NICE5019.
Full textCostes, Philippe. "Modélisation du vol d'un avion souple en turbulence." Toulouse 3, 2005. http://www.theses.fr/2005TOU30044.
Full textThe analysis of flight of the flexible aircraft in turbulence involves many parts of the physics of flight : mechanics, turbulence theory, aerodynamics, elasticity. The aim of the present work consists in a fully theoretical development, synthesizing the basic knowledge in every discipline. Due to simplifying assumptions on the aerodynamic properties, and a modal representation of the structural displacement, the spectra of the aerodynamic forces and moments generated by turbulence can be computed. The theory shows that turbulence transfers its energy to the wing : the resulting forces are due to the work of turbulence on the modal displacement. Furthermore, it is proved that the rigid movement is just a specific case of modal displacement. At last, a coupling effect is found between the relevant movements, which expresses the impossibility to isolate the contribution of a given movement when the wind input is not known, except to its statistical features