Contribution à la modélisation énergétique des hélicoptères en vue de la maîtrise de leurs comportements dynamiques

Abstract : Rotorcraft are complex systems and are thus sources of recurring (i.e. for many new design projects) and poorly understood problems. Considering a specific phenomenon, implying interactions between many subsystems, the analysis of the system from a global but "sufficiently" detailed point of view becomes necessary. Current global modeling methodologies are mainly based on a subsystem-by-subsystem approach and the knowledge of their interactions is insufficient. This work proposes an introduction to a multiphysic and multilevel representation, complementary to existing modeling approaches, offering an energetic and structural view to support analysis and control of rotorcraft. A first study leads to the choice of, the bond graph (BG), the multibond graph (MBG) and the Energetic Macroscopic Representation (EMR) as complementary multiphysic tools for the modeling and control of multiphysic and multibody systems. Then, an energetic analysis of helicopter dynamics is presented and a global energetic and macroscopic representation, using the word bond graph, is proposed. After that, the MBG is used for rotor-fuselage modeling in order to reproduce the air resonance phenomenon. This work shows the potential of energetic representations on rotorcraft and opens many perspectives, not only for the analysis of the existing rotorcraft, but also for the design of innovative rotorcraft.
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Zeineb Chikhaoui-Gomand. Contribution à la modélisation énergétique des hélicoptères en vue de la maîtrise de leurs comportements dynamiques. Autre. Ecole nationale supérieure d'arts et métiers - ENSAM, 2013. Français. ⟨NNT : 2013ENAM0061⟩. ⟨pastel-00996891⟩

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