Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Ingénierie mécanique"”.
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Etude tribologique des matériaux de cage de roulement à billes en ambiance cryogénique
Le lien étroit entre le matériau constituant entièrement ou partiellement la cage d’un roulement à billes fonctionnant en ambiance cryogénique et la lubrification solide, employée dans ce domaine particulier, a été mis en avant. Une comparaison des forces présentes aux contacts des billes …
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Theoretical and Experimental Analysis of Liquid Flooded Compression in Scroll Compressors
Adding liquid to the working fluid in scroll compressors can allow for a working process that approaches isothermal compression. When liquid flooding and regeneration is applied to refrigeration and heat pump systems, simple cycle modeling predicts that for systems that operate at very large …
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Inversion of probabilistic models of structures using measured transfer functions
The aim of this thesis is to develop a methodology for the experimental identification of probabilistic models for the dynamical behaviour of structures. The inversion of probabilistic structural models with minimal parameterization, introduced by Soize, from measured transfer functions is in …
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Applications de la méthode des éléments finis en mécanique des fluides
Investigation of applications of finite elements in fluid problems, with applications.
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Etude expérimentale des sons auto-entretenus produits par un jet issu d'un conduit et heurtant une plaque fendue
The production of self-sustained tones (up to 125 dB) by a low Mach number free plane jet impinging on a slotted plate, known as slot-tone, is experimentally studied. For all geometries of the slot’s edge tested, the tones are generated from 6 m/s and when a resonant mode of the duct from which the …
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Modélisation de problèmes hydroélastiques par éléments finis. Application aux lanceurs aérospatiaux
This thesis is devoted to the finite element analysis of hydro-elastic vibrations arising in launchers. It sets a general formulation generalizing Tong's one by a logical step in a lagrangian point of view. A specialized solution algorithm is presented. As launchers are axisymmetric structures, a …
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Preliminary design of twin-cylinder engines
This report deals with the preliminary design of a twin-cylinder engine. The goal of the work is not to make the detailed design of the engine but to draw the main characteristics of each kind of engine and to investigate which configuration of twin-cylinder engine matches in the best way to given …