Добірка наукової літератури з теми "Déformation macroscopique"
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Статті в журналах з теми "Déformation macroscopique"
Kusnierz, J. "Aspect microscopique et macroscopique de la localisation de déformation au cours du laminage. Cas des alliages d’aluminium et de cuivre." Revue de Métallurgie 91, no. 9 (September 1994): 1330. http://dx.doi.org/10.1051/metal/199491091330.
Повний текст джерелаDarrieulat, M. G., and J. H. Driver. "Introduction au thème : « Les hétérogénéités de déformation plastique : aspects microscopiques et macroscopiques »." Revue de Métallurgie 94, no. 9 (September 1997): 1011–20. http://dx.doi.org/10.1051/metal/199794091011.
Повний текст джерелаDoreau-Malioche, Jeanne, Gaël Combe, and Gioacchino Viggiani. "Étude du comportement de l’interface sable-pieu sous chargement axial monotone et cyclique à l’échelle granulaire." Revue Française de Géotechnique, no. 166 (2021): 4. http://dx.doi.org/10.1051/geotech/2021005.
Повний текст джерелаДисертації з теми "Déformation macroscopique"
Cheval, Florence. "Étude comparative des déformations statique et dynamique du cuivre polycristallin : aspects macroscopique et microscopique." Paris 11, 1988. http://www.theses.fr/1988PA112394.
Повний текст джерелаEl, Mayas Theet Nathalie. "Modélisation microscopique et macroscopique du comportement d'un composite à matrice métallique." Phd thesis, Ecole Nationale des Ponts et Chaussées, 1994. http://tel.archives-ouvertes.fr/tel-00523623.
Повний текст джерелаGharbi, Nesrine. "Contribution à la compréhension de la déformation sous irradiation des alliages de zirconium à forte dose." Thesis, La Rochelle, 2015. http://www.theses.fr/2015LAROS026/document.
Повний текст джерелаThe growth of zirconium alloy tubes of PWR fuel assemblies is the result of two phenomena: axial irradiation creep and stress “free” growth which is correlated to the formation of c-loops at high irradiation doses. This PhD work aims at investigating the coupling between these two phenomena through a fine Transmission Electron Microscopy analysis of the effect of a macroscopic applied stress on the c-loop microstructure. 600 keV Zr+ ion irradiations were performed at 300°C on two recrystallized zirconium alloys: Zircaloy-4 and M5®. Thanks to a device specifically designed, different tensile or compressive stress levels were applied under ion irradiation. The microstructural observations have shown that the c-loop density reduces in grains oriented with the c-axis close to the direction of the applied tensile stress or far from the direction of the applied compressive stress, which is in good agreement with the SIPA mechanism. Nevertheless, the examination of a large number of grains has revealed dispersion from grain to grain. This dispersion, which could be explained by the intergranular heterogeneities, reduces the magnitude of the stress effect on c-loop microstructure. In parallel to this experimental study, a cluster dynamics model has been able to describe the evolution under irradiation of zirconium and Zircaloy-4 microstructure and to assess the effect of stress on c-loop microstructure. On the macroscopic scale, a physical model was also developed to predict the irradiation growth and creep behaviour of zirconium alloy tubes
Ketata, Lassaâd. "Etude et identification du comportement macroscopique de structures en matériaux anisotropes à l'aide d'essais d'optique cohérente." Rouen, 2000. http://www.theses.fr/2000ROUES050.
Повний текст джерелаMaghous, Samir. "Détermination du critère de résistance macroscopique d'un matériau hétérogène à structure périodique. Approche numérique." Phd thesis, Ecole Nationale des Ponts et Chaussées, 1991. http://tel.archives-ouvertes.fr/tel-00529369.
Повний текст джерелаDe, Sa Caroline. "Etude hydro-mécanique et thermo-mécanique du béton : influence des gradients et des incompatibilités de déformation." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2007. http://tel.archives-ouvertes.fr/tel-00279849.
Повний текст джерелаAubert, Isabelle. "Effet de l'hétérogénéisation plastique intragranulaire sur le comportement macroscopique des aciers doux lors de chargements complexes." Metz, 1998. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1998/Aubert.Isabelle.SMZ9852.pdf.
Повний текст джерелаThe determination of the macroscopic behavior of steel is more complicated if the sample is submitted to a sequential loading rather than a monotonous one. Experimental observations prove that plastic intragranular heterogeneities, like dislocations cells, have consequences for the rheology of complex loading, and mainly for the lost of ductility which can appear in sorne cases. Indeed, as the microstructure depends on the loading path, a first dislocations substructure disappears when a second loading is applied and consequently corresponding cells develop. This work consists in elaborating a theoretical model taking into account the cell microstructure evolution in order to represent the macroscopic behavior of steel during complex loading. The equations of the problem have been obtained with a thermodynamical formulation with internal variables. Dislocations cells are represented by a two-phases material in which cells interior are ellipsoïds composed of soft phase and cells walls correspond to the hard phase matrix. The plastic deformation in each phase is treated phenomenologically and the cells are totally defined by six morphological variables (three axis and three angles). The main difference with classical heterogeneous materials lies in the moving interfaces. The invariant formulation of the Helmholtz free energy allows to obtain results on the stability of static dislocations configurations. The dissipation, complementary laws and the non-local hardening matrix describe completely the model. Numerical applications, performed with two morphological variables, allow to follow microstructure evolutions and plastic instabilities appearance in the case of monotonous and complex loadings. That means that the model contains intrinsically physical mecanisms linked to complex loadings
Marion, Serge. "Influence de l'interphase de carbone pyrolytique sur l'endommagement et le comportement macroscopique des matériaux composites céramiques C/SiC." Paris 13, 1993. http://www.theses.fr/1993PA132016.
Повний текст джерелаLe, Vinh Hoang Tan. "Modélisation micromécanique de la fissuration des matériaux hétérogènes par des modèles d'inclusion avec décollement à l'interface." Thesis, Paris Est, 2019. http://www.theses.fr/2019PESC1038.
Повний текст джерелаDebonding at the interface is one of the main failure modes for "inclusion-matrix" materials. From a modeling point of view, it is therefore essential to describe the behavior of such materials with partially debonding interfaces.In the framework of the linear elastic fracture mechanics (in plane elasticity), this work concerns first of all the analysis of interfacial fissures located at the boundary of a circular inclusion, immersed in an infinite matrix. The generic solution of such a problem, based on the complex potential method of Muskhelishvili, has been proposed by Perlman and Sih (1966). This general solution was applied successively to the cases of a single crack and two symmetric cracks by Toya (1974) and Prasad and Simha (2002, 2003), respectively. We use here the methodology of Perlman and Sih (1966) to calculate the solution to the problem of two interface cracks of different lengths, but sharing the same axis of symmetry. On the basis of the solution obtained, we then analyze the propagation of two initially symmetrical cracks. We show that the propagation can be asymmetrical: the length of one of the cracks grows, while that of the other remains constant.Then, the Mori-Tanaka homogenization scheme is adopted to study the effect of the partial debonding of the interface on the macroscopic behavior of the material. Finally, we present a macroscopic stress-strain curve of the "inclusion-matrix" material subjected to uniaxial traction taking into account damage due to debonding at the interface. The influence of parameters such as volume fraction of inclusions, particle size and initial crack angle on this curve is examined
Mbengue, Serigne Saliou. "Étude des déformations induites par l'aimantation des dispositifs électrotechniques : développement d'un modèle magnéto-élastique macroscopique." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2265/document.
Повний текст джерелаThe work presented in this document is part of a project (dBET : diminution des Bruits Electriques de Trains) which aims a better understanding of electromagnetic-origin vibration phenomena (indirectly noise) from electrical devices (transformers, inductors, motors) in trains. This project results from the collaboration of several laboratories and companies including Alstom, ESI Group.... Our contribution in this project consists in building a relevant model to predict the magnetostrictive strain, considered as one of the causes of electromagnetic-origin noise of electrical devices. A process of identification of the model parameters from experimental data is presented. The model is used to compute the magnetostrictive strain of a test bench thanks to finite elements method. Model results will be compared with measurements about ferromagnetic single sheet and the test bench which is a stack of ferromagnetic sheets