Academic literature on the topic 'Taux deformation'

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Journal articles on the topic "Taux deformation"

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Salhi, F., A. Pineau, and G. Moya. "Influence du taux de deformation sur les parametres de recristallisation de l'argent de haute purete." Scripta Metallurgica 20, no. 1 (1986): 109–12. http://dx.doi.org/10.1016/0036-9748(86)90222-x.

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Gryshchuk, Serhii. "Monogenic functions in commutative complex algebras of the second rank and the Lamé equilibrium system for some class of plane orthotropy." Ukrainian Mathematical Bulletin 16, no. 3 (2019): 345–46. http://dx.doi.org/10.37069/1810-3200-2019-16-3-3.

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We consider a class of plane orthotropic deformations of the form \(\varepsilon_{x} = \sigma_x + a_{12} \sigma_y\), \(\gamma_{xy} = 2 \left(p-a_{12}\right) \tau_{xy}\), \(\varepsilon_{y}= a_{12}\sigma_x+\sigma_y\), where \(\sigma_x\), \(\tau_{xy}\), \(\sigma_y\) and \(\varepsilon_{x}\), \(\frac{\gamma_{xy}}{2}\), \(\varepsilon_{y}\) are components of the stress tensor and the deformation tensor, respectively, real parameters \(p\) and \(a_{12}\) satisfy the inequalities: \(-1 \lt p \lt 1\), \(-1 \lt a_{12} \lt p\). A class of solutions of the Lamé equilibrium system for displacements is built
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Shaw, Amit, and D. Roy. "Improved Procedures for Static and Dynamic Analyses of Wrinkled Membranes." Journal of Applied Mechanics 74, no. 3 (2006): 590–94. http://dx.doi.org/10.1115/1.2338057.

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An analysis of large deformations of flexible membrane structures within the tension field theory is considered. A modification of the finite element procedure by Roddeman et al. (Roddeman, D. G., Drukker, J., Oomens, C. W. J., Janssen, J. D., 1987, ASME J. Appl. Mech. 54, pp. 884–892) is proposed to study the wrinkling behavior of a membrane element. The state of stress in the element is determined through a modified deformation gradient corresponding to a fictive nonwrinkled surface. The new model uses a continuously modified deformation gradient to capture the location orientation of wrinkl
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Cho, Ilwoo, and Palle E. T. Jorgensen. "Deformation of semicircular and circular laws via p-adic number fields and sampling of primes." Opuscula Mathematica 39, no. 6 (2019): 773–813. http://dx.doi.org/10.7494/opmath.2019.39.6.773.

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In this paper, we study semicircular elements and circular elements in a certain Banach \(*\)-probability space \((\mathfrak{LS},\tau ^{0})\) induced by analysis on the \(p\)-adic number fields \(\mathbb{Q}_{p}\) over primes \(p\). In particular, by truncating the set \(\mathcal{P}\) of all primes for given suitable real numbers \(t\lt s\) in \(\mathbb{R}\), two different types of truncated linear functionals \(\tau_{t_{1}\lt t_{2}}\), and \(\tau_{t_{1}\lt t_{2}}^{+}\) are constructed on the Banach \(*\)-algebra \(\mathfrak{LS}\). We show how original free distributional data (with respect to
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Bowden, Jonathan. "Contact structures, deformations and taut foliations." Geometry & Topology 20, no. 2 (2016): 697–746. http://dx.doi.org/10.2140/gt.2016.20.697.

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Bartczak, Zbigniew, and Alina Vozniak. "Deformation Instabilities and Lamellae Fragmentation during Deformation of Cross-linked Polyethylene." Polymers 11, no. 12 (2019): 1954. http://dx.doi.org/10.3390/polym11121954.

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The effect of the topology of the amorphous phase and phase interconnectivity on the stability of the deformation of semicrystalline polyethylene was investigated. The chain topology was modified by crosslinking the samples with electron beam irradiation. The samples were deformed by plane-strain compression, while the accompanying structural changes were monitored with X-ray and differential scanning calorimetry (DSC). At the true strain around of e = 0.3, the lamellar stacks parallel to the loading direction experienced microbuckling instability, which shortly led to the cooperative kinking
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Braun, Nicholas J., Katherine R. Yao, Patrick W. Alford, and Dezhi Liao. "Mechanical injuries of neurons induce tau mislocalization to dendritic spines and tau-dependent synaptic dysfunction." Proceedings of the National Academy of Sciences 117, no. 46 (2020): 29069–79. http://dx.doi.org/10.1073/pnas.2008306117.

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Chronic traumatic encephalopathy (CTE) is associated with repeated traumatic brain injuries (TBI) and is characterized by cognitive decline and the presence of neurofibrillary tangles (NFTs) of the protein tau in patients’ brains. Here we provide direct evidence that cell-scale mechanical deformation can elicit tau abnormalities and synaptic deficits in neurons. Using computational modeling, we find that the early pathological loci of NFTs in CTE brains are regions of high deformation during injury. The mechanical energy associated with high-strain rate deformation alone can induce tau misloca
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Guo, Haiyang, Alrayah Hassan Dafaalah, Yanping Liu, Yumei Zhang, and Gao Qiu. "A comparative study on the mechanical properties of polymeric monofilaments." Journal of Engineered Fibers and Fabrics 15 (January 2020): 155892502096279. http://dx.doi.org/10.1177/1558925020962790.

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This paper presents a comparative study on the mechanical properties of seven monofilaments of 0.12 mm diameter made with different polymeric materials including PET, PBT, PE, PP, and PA6 in order to assess their suitability for being spacer yarns for developing high-quality spacer fabrics. Their support capability and elasticity corresponding to fabric compression resistance and resilience, respectively, were evaluated by analyzing the tensile stress–strain relationships and residual strains of monofilaments subjected to cyclic tensile loading. Slack and taut heat setting on the monofilaments
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Bertola, Marco, and Giulio Ruzza. "Brezin–Gross–Witten tau function and isomonodromic deformations." Communications in Number Theory and Physics 13, no. 4 (2019): 827–83. http://dx.doi.org/10.4310/cntp.2019.v13.n4.a4.

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VACARU, SERGIU I., and MIHAI VISINESCU. "NONHOLONOMIC RICCI FLOWS AND RUNNING COSMOLOGICAL CONSTANT I: 4D TAUB-NUT METRICS." International Journal of Modern Physics A 22, no. 06 (2007): 1135–59. http://dx.doi.org/10.1142/s0217751x07035045.

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In this work we construct and analyze exact solutions describing Ricci flows and nonholonomic deformations of four-dimensional (4D) Taub-NUT space–times. It is outlined a new geometric technique of constructing Ricci flow solutions. Some conceptual issues on space–times provided with generic off-diagonal metrics and associated nonlinear connection structures are analyzed. The limit from gravity/Ricci flow models with nontrivial torsion to configurations with the Levi-Civita connection is allowed in some specific physical circumstances by constraining the class of integral varieties for the Ein
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Dissertations / Theses on the topic "Taux deformation"

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Hary, Benjamin. "Compréhension et modélisation de l'influence du taux de renforts et de la texture de déformation sur la recristallisation des aciers ODS ferritiques." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS339/document.

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Les aciers renforcés par dispersion d’oxydes (ODS) sont envisagés comme matériaux de gainage pour les réacteurs à neutrons rapides au sodium. Ils présentent de très bonnes propriétés mécaniques, notamment en fluage, du fait de la présence des nano-renforts ainsi qu’une résistance au gonflement élevée de par leur matrice ferrito-martensitique. La gamme de fabrication des ODS ferritiques est complexe et génère une forte texture morphologique et cristallographique. Les microstructures doivent donc être recristallisées mais cette recristallisation est très souvent hétérogène et difficile à maitris
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BAGHDOUCHE, FATEH ALBERT VADON ALBERT. "ETUDE DES TRANSFORMATIONS DE PHASE ET DE L'EVOLUTION DE TEXTURE CRISTALLOGRAPHIQUE EN FONCTION DU TAUX DE DEFORMATION ET DU TRAITEMENT THERMIQUE DANS L'ALLIAGE EQUIATOMIQUE TINI /." [S.l.] : [s.n.], 1998. ftp://ftp.scd.univ-metz.fr/pub/Theses/1998/Baghdouche.Fateh.SMZ9843.pdf.

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Tarayoun, Alizia. "Localisation de la déformation et de la sismicité en domaine intraplaque : réactivation des paléo-structures crustales et lithosphériques." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTG055/document.

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La déformation actuelle et la sismicité en domaine intraplaque sont des phénomènes mal compris. En particulier le rôle de l'héritage structural sur les variations spatiales de sismicité, et donc d'aléa sismique, reste une problématique majeure à la fois académique et sociétale. Plusieurs études semblent montrer que l'adoucissement rhéologique créé lors de la formation de grandes structures tectoniques aujourd'hui héritées, est un facteur indispensable pour expliquer la localisation et la magnitude de la déformation actuelle. Cependant, la quantification de l'impact de cet l’héritage structural
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Petit-Konczyk, Muriel. "Analyse des deformations de la structure des taux par le terme." Lille 2, 1992. http://www.theses.fr/1992LIL20018.

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Nous construisons un modele de structure de taux d'interet a deux variables d'etat, le taux court et le taux long, qui etend la solution du modele de vasicek. Notre analytique permet, pour la premiere fois, de prendre en compte un coefficient de correlation non nul dans l'equation differentielle partielle du prix des titres a coupon zero. A partir de notre contribution, une analyse complete des deformations de la courbe des taux a coupon zero est realisee. Nous isolons l'incidence de la dualite des variables d'etat, des vitesses d'ajustement, du taux normal a long terme et des coefficients lie
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Lisovyy, Oleg. "Fonctions tau de l'operateur de Dirac sur le cylindre." Phd thesis, Université d'Angers, 2004. http://tel.archives-ouvertes.fr/tel-00007956.

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La thèse est consacrée à l'étude d'un analogue du problème de Riemann-Hilbert et de déformations isomonodromiques pour les solutions de l'équation de Dirac sur le cylindre. L'objectif est de faire un lien entre la théorie de déformation et les fonctions de corrélation dans certains modèles intégrables en théorie quantique des champs dans le volume fini. Dans une première partie, nous étudions des solutions multivaluées de l'équation de Dirac, qui réalisent une représentation unitaire de dimension 1 du groupe fondamental du cylindre avec n points marqués. Nous introduisons et étudions la base c
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Taverna, Joël. "Modélisation mécanique des déformations de la lithosphère." Grenoble 1, 1998. http://www.theses.fr/1998GRE10084.

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Les objectifs de cette these sont de decrire les mecanismes de deformations de la lithosphere en regime compressif, et le controle impose par les parametres mecaniques sur la maniere dont le raccourcissement horizontal est accommode (par la formation de plis, de chevauchements, ou encore par epaississement homogene). Nous avons etudie la nature des instabilites susceptibles de se developper en utilisant des calculs analytiques bases sur la resolution des equations de navier-stokes ainsi que leur evolution pour des taux de deformation importants a partir de modeles analogiques et de calculs num
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Book chapters on the topic "Taux deformation"

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Förster, M., and A. Pal. "AMG in TAU: Adjoint Equations and Mesh Deformation." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38877-4_1.

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Martin, Katharina, Dennis Daub, Burkard Esser, Ali Gülhan, and Stefanie Reese. "Numerical Modelling of Fluid-Structure Interaction for Thermal Buckling in Hypersonic Flow." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_22.

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Abstract Experiments have shown that a high-enthalpy flow field might lead under certain mechanical constraints to buckling effects and plastic deformation. The panel buckling into the flow changes the flow field causing locally increased heating which in turn affects the panel deformation. The temperature increase due to aerothermal heating in the hypersonic flow causes the metallic panel to buckle into the flow. To investigate these phenomena numerically, a thermomechanical simulation of a fluid-structure interaction (FSI) model for thermal buckling is presented. The FSI simulation is set up in a staggered scheme and split into a thermal solid, a mechanical solid and a fluid computation. The structural solver Abaqus and the fluid solver TAU from the German Aerospace Center (DLR) are coupled within the FSI code ifls developed at the Institute of Aircraft Design and Lightweight Structures (IFL) at TU Braunschweig. The FSI setup focuses on the choice of an equilibrium iteration method, the time integration and the data transfer between grids. To model the complex material behaviour of the structure, a viscoplastic material model with linear isotropic hardening and thermal expansion including material parameters, which are nonlinearly dependent on temperature, is used.
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"Isomonodromic deformations." In Tau Functions and their Applications. Cambridge University Press, 2021. http://dx.doi.org/10.1017/9781108610902.010.

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"Integrable integral operators and dual isomonodromic deformations." In Tau Functions and their Applications. Cambridge University Press, 2021. http://dx.doi.org/10.1017/9781108610902.011.

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Conference papers on the topic "Taux deformation"

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Leamy, Michael J., and Oded Gottlieb. "Nonlinear Dynamics of a Taut Spatial String With Material Nonlinearities." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/vib-8155.

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Abstract A spatial string model incorporating a nonlinear (and non-conservative) material law is proposed using finite deformation continuum mechanics. The influence of material nonlinearities on the string’s dynamic response to excitation near a transverse natural frequency is shown to be small due to their appearance at high orders only. Material nonlinearities appear at low order in the equations for excitation near a longitudinal natural frequency and a solution for this case is developed by applying the method of multiple scales directly to the partial differential equations. An example s
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Tan, X. Gary, Andrzej J. Przekwas, and Raj K. Gupta. "Macro-Micro Biomechanics Finite Element Modeling of Brain Injury Under Concussive Loadings." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66218.

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Traumatic brain injury (TBI) occurs in many blunt, ballistic and blast impact events. During trauma axons in the white matter are especially vulnerable to injury due to the rapid mechanical loading of brain. The axonal pathology leads to cytoskeletal failure and disconnection. The microtubules are one of major structural components of the cytoskeleton filamentous network. By bridging the macroscopic forces acting on the whole brain with the cellular and subcellular failure, the macro-micro computational models in both time and space can help us better understand the complex biophysics and eluc
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Ma, Gang, Liping Sun, and Hongwei Wang. "Implementation of a Visco-Elastic Model Into Slender Rod Theory for Deepwater Polyester Mooring Line." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23594.

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Polyester mooring line is gradually becoming popular in deepwater engineering because of its lightweight property. In catenary mooring system, the horizontal restoring force comes from the gravity effect of the catenary mooring line which occupies the payload of the platform. Thus, the synthetic mooring line overcomes the drawback together with the taut mooring system which utilizes the axial elasticity to offer restoring force. The synthetic mooring line may only be one seventh weight of the steel mooring line and has low tensile stiffness which leads to a large stretch, and nonlinear materia
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Impollonia, N., G. Ricciardi, and F. Saitta. "Dynamics of Shallow Cables With General Initial Shape Due to Mean-Flow Loads." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12131.

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In the classic cable theory, vibration of cables is usually analysed by writing the equations of motion in the nearness of the initial equilibrium configuration. Thus, a fundamental difference exists between out-of-plane motion, which substantially corresponds to the linear behaviour of a taut string, and in-plane motion, where self weight determines a sagged initial profile. This work defines a continuous approach in order to establish the initial shape when the cable is subjected to wind or fluid flow arbitrarily directed and a finite element approach in order to investigate the dynamic arou
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