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Academic literature on the topic 'Prototype à échelle réduite'
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Journal articles on the topic "Prototype à échelle réduite"
Jaber, Jana, Marianne Conin, Olivier Deck, Olivier Godard, and Samuel Kenzari. "Essai préliminaire de l’application de l’impression 3D à la modélisation physique des massifs rocheux." Revue Française de Géotechnique, no. 168 (2021): 1. http://dx.doi.org/10.1051/geotech/2021011.
Full textGlath, Julien, Vincent Barazzutti, Antoine Bayard, Gaspard Leveque, Sosava Peka, Lancelot Senlis, Paul Thieffry, Marc Mimram, and Olivier Baverel. "Concevoir et construire une structure réversible grâce aux assemblages non-séquentiels." SHS Web of Conferences 147 (2022): 09002. http://dx.doi.org/10.1051/shsconf/202214709002.
Full textRoussette, Olivier, Yannick Desplanques, and Gérard Degallaix. "Représentativité thermique d'essais tribologiques à échelle réduite." Comptes Rendus Mécanique 331, no. 5 (May 2003): 343–49. http://dx.doi.org/10.1016/s1631-0721(03)00082-2.
Full textAlory, Gaël, Thierry Delcroix, and Isabelle Dadou. "Reproduire le phénomène El Niño à échelle réduite." La Météorologie 8, no. 89 (2015): 11. http://dx.doi.org/10.4267/2042/56592.
Full textLavoie, Marc. "Des recherches patrimoniales à échelle réduite : l’avenir de Parcs Canada." Opinion, no. 22-23 (March 25, 2013): 231–33. http://dx.doi.org/10.7202/1014984ar.
Full textForet, Gilles, Xiemena Oviedo, Karam Sab, and Pierre-Etienne Gautier. "Vibration du ballast ferroviaire. Une étude expérimentale à échelle réduite." Revue française de génie civil 7, no. 6 (June 28, 2003): 777–95. http://dx.doi.org/10.3166/rfgc.7.777-795.
Full textMartiré, Thierry, Guillaume Pellecuer, Philippe Enrici, Jean-Jacques Huselstein, J. P. Gairaud, and E. Briquet. "Simulations, mesures et régulation sur un système S3R pour satellite à échelle réduite." J3eA 22 (2023): 1016. http://dx.doi.org/10.1051/j3ea/20231016.
Full textDadou, Isabelle, Virginie Sanial, Kévin Guerreiro, Marie-Lou Bachèlery, Sébastien Chastanet, Gaël Alory, and Samuel Somot. "Reproduire la circulation thermohaline à échelle réduite et comprendre son rôle dans le climat." La Météorologie 8, no. 93 (2016): 15. http://dx.doi.org/10.4267/2042/59937.
Full textAmarenco, G., P. Marquis, C. McCarthy, F. Richard, and B. Leriche. "Échelle Ditrovie: version réduite permettant l'évaluation de la qualité de vie lors des troubles mictionnels." Annales de Réadaptation et de Médecine Physique 39, no. 6 (January 1996): 378. http://dx.doi.org/10.1016/0168-6054(96)86974-1.
Full textHorcik, Zoya, and Marc Durand. "L’expérience mimétique dans l’apprentissage adulte: le cas des formations par simulation." Swiss Journal of Educational Research 37, no. 1 (September 20, 2018): 167–86. http://dx.doi.org/10.24452/sjer.37.1.4949.
Full textDissertations / Theses on the topic "Prototype à échelle réduite"
Ratovonkery, Julie. "DYNABIOSOL : Conception bio-inspirée d'une enveloppe solaire Photovoltaïque dynamique aux fonctionnalités évolutives." Electronic Thesis or Diss., Chambéry, 2023. http://www.theses.fr/2023CHAMA027.
Full textClimate change, growing energy demand and depletion of fuel resources have led to increasingly high energy and environmental ambitions. These ambitions aim for resilient, sustainable, zero carbon and positive energy buildings in the building sector. Radical innovation in building envelope technologies is paramount as it is a key element in building energy efficiency. Indeed, the envelope is often designed on the basis of static functionalities rather than an adaptive and multifunctional interface. However, in the latter case, it would interact with and benefit from the effects of its external environment to ensure a comfortable indoor environment and the production of the building operating energy.In this context, this thesis consists in the design of an adaptive facade with integrated photovoltaic (PV) components. The adaptive functionalities are developed to improve both the thermal performance of the facade and the electrical production of the PV modules. Designing such an envelope element often requires complex mechanical and control systems to implement dynamic and adaptive functionalities. For this reason, we have chosen to adopt a bioinspiration approach and use smart materials to achieve flexible and low-tech adaptation mechanisms.The methodology involves the analysis of the thermal and electrical behaviour of a standard photovoltaic facade. In our case, it comprises bifacial PV modules, a ventilated air gap and a multilayer wall. The principle is to identify the properties limiting that facade to static functionalities. From this step, biological mechanisms related to the identified properties, and that can overcome the limitations are explored. Afterwards, smart materials enabling to implement the bioinspired strategies are selected. Finally, the outline of the new concept is developed with the principles involved. The solution is validated through experimental studies on the samples of the selected materials and on a reduced-scale prototype of the facade. Numerical feasibility studies and energy performance analysis at the building scale are also carried out.The developed solution consists in the application of thermosensitive and reflective bilayer components on the wall behind the PV modules. Those components are thin rectangular slats applied opposite to the PV cells. When the temperature rises, they gradually bend. Their cyclic deformation allows the adjustment of the facade functionalities according to three principles. First, in summer, the PV facade is cooled by shading the wall and dissipating heat through the increased thermal surface exchange in the air gap. Second, in winter, solar thermal energy is harvested by closing the air gap or recovering preheated air. Finally, the bilayers enhance the PV power output because of their high reflection of the irradiance to the backside of the bifacial PV modules. The experimental and numerical studies have validated the potential of the design to improve building energy efficiency, especially for increasing yearly electricity production and thermal performance in summer
Chamaret, Damien. "Plate-forme de réalité virtuelle pour l'étude de l'accessibilité et de l'extraction de lampes sur prototype virtuel automobile." Phd thesis, Université d'Angers, 2010. http://tel.archives-ouvertes.fr/tel-00540899.
Full textAdanmenou, Roland. "Mesures à échelle réduite de paramètres pertinents issus de scénarios feu." Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1R028.
Full textThe evaluation of the reaction and resistance to fire of materials is of prime importance for the protection of goods and people. This evaluation is usually carried out using standardized tests, which are time-consuming, expensive, and often require large samples. In the literature, several bench-scale tests already exist that mimic specific fire scenarios such as electrical fires, building fires, etc... However, testing materials exposed to high heat fluxes or in other words in extreme conditions, from fires such as BLEVE, pool fires, and jet fires are usually carried out only at large scale. The objective of this Ph.D. work is to develop at a reduced scale, a bench to evaluate the fire behavior of materials, and to perform a rapid screening (high throughput approach) for the development of new materials. The test can reproduce at a laboratory scale and under perfectly controlled conditions, the thermal constraints resulting from extreme fires. This unique bench-scale test is equipped with well-controlled measuring instruments and it enables us to examine the fire behavior of materials subjected to high heat fluxes. Considering the high thermal fluxes generated by the extreme fires, the steps in developing the bench-scale test in terms of calibration and validation on a steel plate are presented. The test can reproduce heat fluxes between 100 and 300 kW/m² (and even beyond). To study the performance and behavior of materials other than steel, tests were performed on intumescent epoxy-based paints. The obtained results are presented and discussed. Simple numerical models are also proposed in this work. These numerical models allow, on one hand, to identify and quantify the boundary conditions on the exposed side and on the other hand to simulate the performance of an intumescent paint, which has been tested on the bench-scale test
Bodovillé, Guillaume. "Modélisation thermomécanique de disques de frein de TGV et simulation à échelle réduite." Lille 1, 2001. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2001/50376-2001-275.pdf.
Full textMerino, Pierrick. "Reproduction expérimentale du contact roue-rail à échelle réduite : Voies de formation des sources de défauts." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI101.
Full textThe safety issue is still the main concern of railway network due to the development of railway transportation and the increase of the amount of passengers. The understanding of the origin of the rolling contact fatigue (RCF) defect, is one key to safety requirements. The White Etching Layer associated to the initiation of the squat defect is hardly recreated. The use of laboratory test bench enable the replication of the wheel-rail contact. Nevertheless, only a fraction of the characteristic parameters is taken into account and compromises are necessary. The test bench “Triboring” built at LaMCoS, fulfills a gap in the existing apparatus. The “roller on circular rail” design was chosen to fit the tribological behavior of wheel-rail contact, and replicate RCF defects. The production of a test bench required to relate and differentiate the measured data to the phenomena corresponding to the operating from the phenomena corresponding to wheel-rail contact. The bench was characterized with dynamic and cinematic analysis. The design of the sample was improved. The tribological behavior of the bench was optimized with the preparation of the initial surface of the samples and the production of a tribological “fuse”. This layer delays the speed accommodation by wear and benefit the shear of the first bodies and the formation a Tribological Transformation of Surface (TTS), as the White Etching Layer. The two different fuse layer created (Run-in and oxidized), induced a significant wear reduction. The tribological and metallurgical analysis of the surfaces and cuts of the sample, enabled to the explanation of the evolution of the microstructure of the rail close to the surface, submitted to various mechanical solicitations. The transformation of this microstructure led to the formation of white etching layer mechanically formed
Lecuyer-Le, Bris Romain. "Modélisation numérique et expérimentale de la captation d'énergie houlomotrice : application aux essais à échelle réduite en bassin." Thesis, Brest, 2022. http://theses-scd.univ-brest.fr/2022/These-2022-SML-Mecanique_genie_mecanique_mecanique_des_fluides_et_energetique-LECUYER_LE_BRIS_Romain.pdf.
Full textThe behaviour of wave energy converters (WEC) is non-linear and complex to model accurately, especially due to the fluid–structure interaction and the randomness of the wave. The ability of a WEC to recover some of the wave energy depends on the control strategy used and the reliability of the behaviour model. Numerical computation time must remain reasonable in order to allow real–time control. In this context, perfect fluid calculations are used to model the fluid-structure interaction at first order. This diffraction–radiation approach highlights the delay functions of the system, a detailed analysis of which has been carried out in this work and illustrated on a reference case. This thesis proposes to establish a method applicable to the modelling of any type of multi-body WEC. The formulation of the hydrodynamic forces resulting from the assumptions of perfect fluid is then supplemented with semi–empirical terms in order to take into account non–linear effects. The viscous forces represented are particularly influential in the vicinity of the motion resonances. This method also allows the integration of experimental data into the numerical model. Experimental work was therefore carried out in order to understand, quantify and integrate the effects observed experimentally for an anchored body into the numerical model. Finally, elements in favor of an experimental campaign for a two-body system are presented
Bretaudeau, François. "Modélisation physique à échelle réduite pour l'adaptation de l'inversion des formes d'ondes sismiques au génie civil et à la subsurface." Phd thesis, Université de Nantes, 2010. http://tel.archives-ouvertes.fr/tel-00730540.
Full textVarais, Andy. "Modèles à échelle réduite en similitude pour l'ingénierie système et l'expérimentation simulée "temps compacté" : application à un microréseau incluant un stockage électrochimique." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0007/document.
Full textThis thesis was carried out in collaboration with SCLE SFE (ENGIE Group) and the Laplacelaboratory. It focuses on the establishment of a methodology allowing the “similarity” modelsdevelopment, with reduced power and time scale. These models can be used for systems analysisbut they are particularly useful for real-time experimentation of energy systems. Indeed, theexperiments are often carried out on a small scale for issues of size, cost, … Some parts of theseexperiments can be "emulated" (physically simulated by power devices) while others consist ofphysical components: this is called the Hardware in the Loop (HIL) procedure. Although, initially,the downscaling approach is broad in scope, our main field of application is microgrids withintegration of intermittent renewable sources coupled with storage components. As a result, ourwork focuses on the implementation of power / energy / time similarity models of ENR sources andstorage facilities. The concept of time reduction, we will talk about "compacted virtual time", is oneof the key concepts of this work. Particular attention is paid to the development of a physicalemulator of electrochemical battery. Indeed, energy storage is a key point in microgrid. In addition,this element has strong nonlinearities whose scaling in similarity must imperatively take intoaccount and is not trivial. Once these models have been developed, they are tested through theimplementation of simulated experiments using physical emulators with reduced power scale andcompacted virtual time. These tests also make it possible to compare the concepts of "copymodel" emulators, for which a model is used to reproduce the behavior of the system, and "copyimage" emulators, where the behavior of the system is reproduced from of one of its realcomponents (for example a cell for the battery)
Pineault, Nathalie. "Effet des types de vitrages sur la qualité de l'éclairage naturel : Étude expérimentale à l'aide d'une maquette à échelle réduite d'une salle de séjour." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26542/26542.pdf.
Full textThe use of tinted and coated glazing is one of the strategies that can improve energy efficiency of residential buildings. However, these glazing types modify the quantity and quality of daylight in the building and these modifications affect the visual perception of the interior and view out. This effect is probably more important to consider in spaces dedicated to contemplation, such as a residential living room, because more attention is allocated to the room’s ambience. However, most studies in this area have been conducted in a work environment and no studies have been conducted in a residential environment. The main objective of this research was to study the effect of glazing type on daylight quality in residential spaces. The experience was conducted using a scale model of a typical living room where the glazing type was interchangeable. Seven glazing samples provided by local manufacturers were tested. The participants looked inside the model and evaluated daylighting qualities according to each glazing type. Furthermore, the transmitted light colour was studied and analysed by a digital photo analysis. The main results confirmed most of the work hypotheses and corroborated some results of previous research. Among these results, it was found that the glazing type influences the perception of light level, naturalness, beauty and pleasantness and precision. Also, the correlation between visual transmittance and the qualitative factors confirms the hypothesis that glazing types of a higher visual transmittance produce more positive ratings regarding the perception of naturalness, beauty and pleasantness and precision. Furthermore, results suggest that for a similar transmittance (82 and 83%), participants preferred an iron-free double pane glazing to a standard double pane glazing, which is probably due to the spectral neutrality of the iron-free glazing. Finally, this research indicates that glazing types with a strong green shift are generally disliked.
Pineault, Nathalie. "Effets des types de vitrage sur la qualité de l'éclairage naturel : étude expérimentale à l'aide d'une maquette à échelle réduite d'une salle de séjour." Master's thesis, Université Laval, 2009. http://hdl.handle.net/20.500.11794/21093.
Full textThe use of tinted and coated glazing is one of the strategies that can improve energy efficiency of residential buildings. However, these glazing types modify the quantity and quality of daylight in the building and these modifications affect the visual perception of the interior and view out. This effect is probably more important to consider in spaces dedicated to contemplation, such as a residential living room, because more attention is allocated to the room’s ambience. However, most studies in this area have been conducted in a work environment and no studies have been conducted in a residential environment. The main objective of this research was to study the effect of glazing type on daylight quality in residential spaces. The experience was conducted using a scale model of a typical living room where the glazing type was interchangeable. Seven glazing samples provided by local manufacturers were tested. The participants looked inside the model and evaluated daylighting qualities according to each glazing type. Furthermore, the transmitted light colour was studied and analysed by a digital photo analysis. The main results confirmed most of the work hypotheses and corroborated some results of previous research. Among these results, it was found that the glazing type influences the perception of light level, naturalness, beauty and pleasantness and precision. Also, the correlation between visual transmittance and the qualitative factors confirms the hypothesis that glazing types of a higher visual transmittance produce more positive ratings regarding the perception of naturalness, beauty and pleasantness and precision. Furthermore, results suggest that for a similar transmittance (82 and 83%), participants preferred an iron-free double pane glazing to a standard double pane glazing, which is probably due to the spectral neutrality of the iron-free glazing. Finally, this research indicates that glazing types with a strong green shift are generally disliked.