Letteratura scientifica selezionata sul tema "Problème de torsion"
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Articoli di riviste sul tema "Problème de torsion":
DAVID, SINNOU, e AMÍLCAR PACHECO. "LE PROBLÈME DE LEHMER ABÉLIEN POUR UN MODULE DE DRINFEL'D". International Journal of Number Theory 04, n. 06 (dicembre 2008): 1043–67. http://dx.doi.org/10.1142/s1793042108001870.
Boun-jad, Mohamed, e Toufik Zebbiche. "Solution de l’équation de Poisson dans un domaine bidimensionnel par la méthode des éléments finis". Journal of Renewable Energies 16, n. 3 (22 ottobre 2023): 441–84. http://dx.doi.org/10.54966/jreen.v16i3.392.
Lau, Ming G. "Torsional axisymmetric finite element model for problems in elasticity". Canadian Journal of Civil Engineering 13, n. 5 (1 ottobre 1986): 583–87. http://dx.doi.org/10.1139/l86-085.
Pan, Wen-Hao, Chuan-Hao Zhao, Yuan Tian e Kai-Qi Lin. "Exact Solutions for Torsion and Warping of Axial-Loaded Beam-Columns Based on Matrix Stiffness Method". Nanomaterials 12, n. 3 (4 febbraio 2022): 538. http://dx.doi.org/10.3390/nano12030538.
ZEMYAN, STEPHEN M. "ON THE EXTREMAL CURVATURE AND TORSION OF STEREOGRAPHICALLY PROJECTED ANALYTIC CURVES". Tamkang Journal of Mathematics 28, n. 2 (1 giugno 1997): 101–17. http://dx.doi.org/10.5556/j.tkjm.28.1997.4324.
Valmassy, R., e B. Stanton. "Tibial torsion. Normal values in children". Journal of the American Podiatric Medical Association 79, n. 9 (1 settembre 1989): 432–35. http://dx.doi.org/10.7547/87507315-79-9-432.
Trunin, Konstantin. "Mathematical Model of Flexible Link Dynamics in Marine Tethered Systems Considering Torsion and its Influence on Tension Force". Polish Maritime Research 30, n. 2 (1 giugno 2023): 188–96. http://dx.doi.org/10.2478/pomr-2023-0032.
Lee, Jin Woo. "Optimal Cantilever Design by Topology and Shape Optimization Methods". Applied Mechanics and Materials 789-790 (settembre 2015): 306–10. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.306.
Sapountzakis, Evangelos J. "Bars under Torsional Loading: A Generalized Beam Theory Approach". ISRN Civil Engineering 2013 (21 marzo 2013): 1–39. http://dx.doi.org/10.1155/2013/916581.
Elsayed, M. A., D. W. Dareing e M. A. Vonderheide. "Effect of Torsion on Stability, Dynamic Forces, and Vibration Characteristics in Drillstrings". Journal of Energy Resources Technology 119, n. 1 (1 marzo 1997): 11–19. http://dx.doi.org/10.1115/1.2794215.
Tesi sul tema "Problème de torsion":
Zoubairi, Hakima. "Homogénéisation et contrôle optimal pour des problèmes de Stokes et pour un problème de torsion élastique". Metz, 2001. http://tel.ccsd.cnrs.fr/documents/archives0/00/00/12/90/index_fr.html.
This thesis is devoted to the study of optimal control and homogeneization for some problems associated to the Stokes equation and also for an elastic torsion problem. For each of the problems, a control act on the state equation. This control belongs to a set of admissible controls. We consider a cost function wich depends on the state and on the control. The control optimal (unique) is the function in the set of admissible controls which minimizes the cost function. Then we study its behaviour. If it admits a limit, we characterize it as an optimal control associated to the homogenized problem. In the first part, we study an optimal control problem in a mixture of two fluids. Those fluids are distributed periodically in a bi or three-dimensionnal domain. Each fluid obeys the Stokes equations. In the second part, we study also a mixture of two fluids but separated by an rapidly oscillating interface. These fluids obeys the Stoke equations. In the third part, we study an optimal control problem for the Stokes equations in perforated domains. We suppose that the size of the perforations is smaller than a given period. In the last part, we study the optimal control of an elastic torsion problem. For each of these parts, we characterize the limit of the optimal control as the optimal control of the limit problem
ZOUBAIRI, Hakima. "Homogénéisation et Controle Optimal pour des Problèmes de Stokes et pour un Problème de Torsion Elastique". Phd thesis, Université de Metz, 2001. http://tel.archives-ouvertes.fr/tel-00001290.
Ait, El Amrani Asmâa. "Homogénéisation d'un problème de torsion élastique pour un arbre cylindrique de section multiconnexe et multiperiodique". Vandoeuvre-les-Nancy, INPL, 2000. http://www.theses.fr/2000INPL074N.
Hammedi, Hiba. "Analyse spectrale des guides d'ondes "twistés"". Thesis, Toulon, 2016. http://www.theses.fr/2016TOUL0001/document.
In this thesis we study the spectral properties of perturbed 3D quantum waveguides (tubes). We mainly consider two types of perturbation:The first type is a geometric perturbation. More precisely, we study the Laplace operator with Dirichlet boundary conditions defined in a twisted tube. The twist that we consider is a constant one that has been locally perturbed by a function of same sign (a repulsive twist). The second type of perturbation is done by changing locally the boundary conditions. In fact, we study the Laplacian operator with Dirichlet conditions everywhere on the boundary of the tube except on a bounded part where we consider the Neumann conditions. In one hand we study the straight tubes (with no geometric perturbations) to figure out the effect of perturbation that occurred in the boundary conditions. In the other hand we study the twisted tubes to establish a comparison between the opposite effects of these two types of perturbation (the geometric one and the change that we imposed on the boundary conditions)
Générau, François. "Sur une approximation variationnelle stable du cut locus, et un problème isopérimetrique non local". Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALM014.
This thesis is composed of two parts. In the first part, we study a generalization of the variational problem of elastic-plastic torsion problem to manifolds. We show that in the case of manifolds, the problem is not equivalent to an obstacle type problem, contrary to the euclidean case, but we establish the equivalence when the parameter of the problem goes to infinity. We show, as in the euclidean case, that the non contact set contains the cut locus of the manifold, and converges to the latter in the Hausdorff sense. What is more, we show that the minimizers of the problem are uniformly semiconcave. We deduce a stable approximation of the cut locus, in the spirit of the lambda medial axis of Chazal and Lieutier. We then use this result to compute numerically the cut locus of some surfaces of varied geometries.In the second part, we study an extension of a nonlocal isoperimetric problem. More precisely, we add a confinement potential to Gamow's liquid drop model for the nucleus. We then study large volume minimizers. We show that for certain sets of parameters, large volume minimizers converge to the ball, or may even exactly be the ball. Moreover, we develop a numerical method for this variational problem. Our results confirm numerically a conjecture of Choksi and Peletier, in dimension 2: it seems that minimizers of Gamow'sliquid drop model are balls as long as they exist
Perin, Chloé. "Plongements élémentaires dans un groupe hyperbolique sans torsion". Phd thesis, Université de Caen, 2008. http://tel.archives-ouvertes.fr/tel-00460330.
Graff, Emmanuel. ""Link-homotopy" in low dimensional topology". Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMC244.
This thesis explores low-dimensional topology, with a focus on knot theory. Knot theory is dedicated to the study of knots as commonly understood: a piece of string tied in space or, more generally, links formed by taking several pieces of string. Knots and links are studied up to deformation, for example, up to isotopy, which involves manipulations that do not require cutting or passing the string through itself. This thesis explores link-homotopy, a more flexible equivalence relation where distinct components remain disjoint, but a single component can self-intersect. The theory of claspers, powerful tools of surgery, is developed up to link-homotopy. Their use allows for a geometric proof of the classification of links with 4 components or less up to link-homotopy. Special attention is then given to braids, mathematical objects related to knots and links. It is shown that the homotopy braid group is linear, meaning it is faithfully represented by a subgroup of matrices. New group presentations are also proposed. Finally, it is established that the homotopy braid group is torsion-free for any number of components. This last result draws upon the broader context of welded knot theory
Finski, Siarhei. "On some problems of holomorphic analytic torsion". Thesis, Sorbonne Paris Cité, 2019. https://theses.md.univ-paris-diderot.fr/FINSKI_Siarhei_va.pdf.
In the first context, we study the asymptotics of the analytic torsion, when a Hermitian holomorphic vector bundle is twisted by an increasing power of a positive line bundle. In the second context, we generalize the theory of analytic torsion for surfaces with hyperbolic cusps. Motivated by singularities appearing in complete metrics of constant scalar curvature -1 on stable Riemann surfaces, we suppose that the metric on the surface is smooth outside a finite number points in the neighborhood of which it can to have singularities like Poincaré metric has on a punctured disc. We fix a Hermitian holomorphic vector bundle which has at worst logarithmic singularities in the neighborhood of the marked points. For these data, by renormalizing the trace of the heat operator, we construct the analytic torsion and study its properties. Then we study the properties of the analytic torsion in family setting: we prove the curvature theorem, we study the behavior of the analytic torsion when the cusps are created by degeneration and we give some applications to the moduli spaces of pointed curves
Bury, A. S. "Torsional vibration problems in reciprocating machinery". Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/34851.
Zoubairi, Hakima Alabau Fatiha. "Homogénéisation et contrôle optimal pour des problèmes de stokes et pour un problème de torsion élastique". [S.l.] : [s.n.], 2001. http://tel.ccsd.cnrs.fr/documents/archives0/00/00/12/90/index_fr.html.
Libri sul tema "Problème de torsion":
Montgomery, Küllike. Torsten Billman. Stockholm: Bildförlaget Öppna Ögon, 1986.
Smith, James. Highly accurate beam torsion solutions using the p-Version finite element method. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1996.
Isabelle, Brocas, e Persson Torsten, a cura di. Workbook to accompany Political economics : explaining economic policy by Torsten Persson and Guido Tabellini. Cambridge, Mass: The MIT Press, 2000.
Yamamoto, Taira. Nonlinear finite element analysis of transverse shear and torsional problems in reinforced concrete shells. Ottawa: National Library of Canada, 1999.
Jakobson, Dmitry, Pierre Albin e Frédéric Rochon. Geometric and spectral analysis. Providence, Rhode Island: American Mathematical Society, 2014.
Farb, Benson, e Dan Margalit. Torsion. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691147949.003.0008.
Steigmann, David J. Some boundary-value problems for uniform isotropic incompressible materials. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198567783.003.0007.
Bazergui. Résistance des matériaux. Ecole Polytechnique Montreal, 1993.
Bazergui. Résistance des matériaux. Ecole Polytecnique de, 2003.
Muskhelishvili, N. I. Some Basic Problems of the Mathematical Theory of Elasticity: Foundamental Equations Plane Theory of Elasticity Torsion and Bending. N I Muskhelishvili, 2010.
Capitoli di libri sul tema "Problème de torsion":
Gross, Dietmar, Wolfgang Ehlers, Peter Wriggers, Jörg Schröder e Ralf Müller. "Torsion". In Mechanics of Materials – Formulas and Problems, 111–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-53880-7_4.
Shama, Mohamed. "Problems". In Torsion and Shear Stresses in Ships, 265–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14633-6_13.
Ward, J. P. "The General Torsion Problem". In Solid Mechanics and Its Applications, 162–91. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-015-8026-7_7.
Lanchon, H. "Torsion Elastoplastique D'Arbres Cylindriques Problemes Ouverts". In New Variational Techniques in Mathematical Physics, 121–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-10960-7_5.
Hahn, Hans Georg. "Eindimensionale Probleme: Axialbelastung, Biegung und Torsion prismatischer Stäbe". In Elastizitätstheorie, 144–92. Wiesbaden: Vieweg+Teubner Verlag, 1985. http://dx.doi.org/10.1007/978-3-663-09894-2_8.
Yates, J., e M. W. Brown. "Torsional Low Cycle Fatigue". In Problems of Fracture Mechanics and Fatigue, 601–6. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-2774-7_132.
Incerpi, Marc H. "The Acute Abdomen during Pregnancy: Ovarian Torsion, Appendicitis". In Management of Common Problems in Obstetrics and Gynecology, 172–75. Oxford, UK: Wiley-Blackwell, 2010. http://dx.doi.org/10.1002/9781444323030.ch37.
Fouotsa, Tako Boris, Péter Kutas, Simon-Philipp Merz e Yan Bo Ti. "On the Isogeny Problem with Torsion Point Information". In Public-Key Cryptography – PKC 2022, 142–61. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-97121-2_6.
Petit, Christophe. "Faster Algorithms for Isogeny Problems Using Torsion Point Images". In Advances in Cryptology – ASIACRYPT 2017, 330–53. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70697-9_12.
Kappos, Andreas J., Eleftheria D. Goutzika, Sotiria P. Stefanidou e Anastasios G. Sextos. "Problems in Pushover Analysis of Bridges Sensitive to Torsion". In Computational Methods in Applied Sciences, 99–122. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-94-007-0053-6_5.
Atti di convegni sul tema "Problème de torsion":
Ouyang, Zhenyu, Wei Xu, Gefu Ji, Guoqiang Li, H. Dwayne Jerro e Su-Seng Pang. "Nonlinear Model of Torsional Fracture in Adhesive Pipe Joints". In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25717.
Darvishian, Ali, Hamid Moeenfard e Mohammad Taghi Ahmadian. "Coupling Effects Between Torsion and Bending in Torsional Micromirrors Under Capillary Forces". In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65121.
Yoneno, Masahiro, Toshiyuki Sawa, Hidekazu Nishijima e Motohiro Matsuo. "Stress Analysis and Strength of Joints Combining Adhesives With Bolts Subjected to Torsions". In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-0856.
Moeenfard, Hamid, Farzaneh Kaji e Mohammad Taghi Ahmadian. "Coupled Bending and Torsion Effects on the Squeezed Film Air Damping in Torsional Micromirrors". In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70114.
Galuppi, L. "The extended membrane analogy for an engineered evaluation of the torsional properties of multi-material beams". In AIMETA 2022. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902431-15.
Nayfeh, Samir A. "Constrained-Layer Damping of Torsional Vibration of Thin-Walled Tubes". In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21463.
Moeenfard, Hamid, Mohammad Taghi Ahmadian e Hosein Moeenfard. "Closed Form Solutions for Electrostatically Actuated Micromirrors Considering the Bending Effect". In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65726.
Abdo, Jamil, Edris M. Hassan, Khaled Boulbrachene e Jan Kwak. "Modeling and Experimental Investigations of Drill Pipe Failure". In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70369.
Li, Hui, Huifen Xu, Huilong Ren, Xiaoxi Shen e Yubo Wang. "The Effect on Large Container Ships’ Fatigue due to Springing Loads Coupling Horizontal and Torsional Vibrations". In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77982.
Sauve´, R. G. "Choice of Objective Rate for Non-Proportional Loading Applications". In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2739.
Rapporti di organizzazioni sul tema "Problème de torsion":
Wink, Robert E. L51645 Screening of Connectors for J-Lay Operations. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), marzo 1991. http://dx.doi.org/10.55274/r0010108.
Thor, Peter, Karin Olsson, Håkan Wennhage, Karl Lundström, Mattias Sköld, Andrea Belgrano, Matti Åhlund et al. Marina miljön i 8+fjordar – nuvarande kunskap om ekosystemet och de mänskliga belastningarna. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.utn1p1g09m.