Adaptation de mailllages structurés par un modèle d'élasticité non linéaire

Adaptation de mailllages structurés par un modèle d'élasticité non linéaire PDF Author: Claire Martin (auteure d'une thèse de doctorat en Mathématiques appliquées).)
Publisher:
ISBN:
Category :
Languages : fr
Pages :

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Book Description
L'OBJET DE CETTE ETUDE EST LA MISE AU POINT D'UN MODELE D'ADAPTATION DE MAILLAGES STRUCTURES BIDIMENSIONNELS A NOMBRE DE POINTS FIXE, POUR LA RESOLUTION NUMERIQUE DES EQUATIONS DE NAVIER-STOKES. APRES UN RAPPEL DES PRINCIPALES TECHNIQUES DE GENERATION DE MAILLAGES STRUCTURES ET DES CRITERES D'ADAPTATION USUELS, NOUS PROPOSONS UNE CLASSE DE CRITERES 1D, BASES SUR LA RECONSTRUCTION DE LA SOLUTION NUMERIQUE. PARTANT D'UNE HYPOTHESE DONNANT L'ERREUR EN FONCTION DE LA TAILLE DES MAILLES, L'ETUDE MONODIMENSIONNELLE PRELIMINAIRE CONDUIT A UNE METHODE D'ADAPTATION DE MAILLAGE 1D PREVOYANT UN TRAITEMENT DE REGULARISATION EN TEMPS, INDISPENSABLE DANS UNE APPROCHE DYNAMIQUE. ELLE EST APPLIQUEE A DES ALGORITHMES DE TYPE MARCHE EN TEMPS OU EN ESPACE. LE MODELE D'ADAPTATION DE MAILLAGES STRUCTURES BIDIMENSIONNELS, QUI CONSTITUE LE CUR DE CETTE THESE, EST BASE SUR LA FORMULATION D'UN PROBLEME D'ELASTICITE NON LINEAIRE POSE SUR LE DOMAINE PHYSIQUE, PAR RAPPORT A LA TRANSFORMATION INVERSE. PLUS PRECISEMENT, ON OPTIMISE UNE ENERGIE ELASTIQUE DONT LA CONSTRUCTION DEPEND D'UNE METRIQUE ANISOTROPE ET ASSURE LA BIJECTIVITE DE LA TRANSFORMATION. LA STRATEGIE RETENUE POUR GARANTIR UNE BONNE REGULARITE EN TEMPS, CONSISTE A IMPOSER UNE CONTRAINTE INEGALITE DANS LE PROBLEME DE MINIMISATION. LE MODELE AINSI CONSTRUIT CONDUIT A UN PROBLEME BIEN POSE. SA RESOLUTION NUMERIQUE S'APPUIE SUR UNE METHODE DE NEWTON-RAPHSON. LE MODELE OBTENU PERMET DE GENERER DES MAILLAGES STRUCTURES SANS RETOURNEMENT DE MAILLE ET S'INSERE DANS DES CALCULS NAVIER-STOKES DANS UNE UTILISATION DYNAMIQUE DE L'ADAPTATION, GRACE A UNE METHODE DE TYPE ALE

Adaptation de mailllages structurés par un modèle d'élasticité non linéaire

Adaptation de mailllages structurés par un modèle d'élasticité non linéaire PDF Author: Claire Martin (auteure d'une thèse de doctorat en Mathématiques appliquées).)
Publisher:
ISBN:
Category :
Languages : fr
Pages :

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Book Description
L'OBJET DE CETTE ETUDE EST LA MISE AU POINT D'UN MODELE D'ADAPTATION DE MAILLAGES STRUCTURES BIDIMENSIONNELS A NOMBRE DE POINTS FIXE, POUR LA RESOLUTION NUMERIQUE DES EQUATIONS DE NAVIER-STOKES. APRES UN RAPPEL DES PRINCIPALES TECHNIQUES DE GENERATION DE MAILLAGES STRUCTURES ET DES CRITERES D'ADAPTATION USUELS, NOUS PROPOSONS UNE CLASSE DE CRITERES 1D, BASES SUR LA RECONSTRUCTION DE LA SOLUTION NUMERIQUE. PARTANT D'UNE HYPOTHESE DONNANT L'ERREUR EN FONCTION DE LA TAILLE DES MAILLES, L'ETUDE MONODIMENSIONNELLE PRELIMINAIRE CONDUIT A UNE METHODE D'ADAPTATION DE MAILLAGE 1D PREVOYANT UN TRAITEMENT DE REGULARISATION EN TEMPS, INDISPENSABLE DANS UNE APPROCHE DYNAMIQUE. ELLE EST APPLIQUEE A DES ALGORITHMES DE TYPE MARCHE EN TEMPS OU EN ESPACE. LE MODELE D'ADAPTATION DE MAILLAGES STRUCTURES BIDIMENSIONNELS, QUI CONSTITUE LE CUR DE CETTE THESE, EST BASE SUR LA FORMULATION D'UN PROBLEME D'ELASTICITE NON LINEAIRE POSE SUR LE DOMAINE PHYSIQUE, PAR RAPPORT A LA TRANSFORMATION INVERSE. PLUS PRECISEMENT, ON OPTIMISE UNE ENERGIE ELASTIQUE DONT LA CONSTRUCTION DEPEND D'UNE METRIQUE ANISOTROPE ET ASSURE LA BIJECTIVITE DE LA TRANSFORMATION. LA STRATEGIE RETENUE POUR GARANTIR UNE BONNE REGULARITE EN TEMPS, CONSISTE A IMPOSER UNE CONTRAINTE INEGALITE DANS LE PROBLEME DE MINIMISATION. LE MODELE AINSI CONSTRUIT CONDUIT A UN PROBLEME BIEN POSE. SA RESOLUTION NUMERIQUE S'APPUIE SUR UNE METHODE DE NEWTON-RAPHSON. LE MODELE OBTENU PERMET DE GENERER DES MAILLAGES STRUCTURES SANS RETOURNEMENT DE MAILLE ET S'INSERE DANS DES CALCULS NAVIER-STOKES DANS UNE UTILISATION DYNAMIQUE DE L'ADAPTATION, GRACE A UNE METHODE DE TYPE ALE

Mastering Calculations in Linear and Nonlinear Mechanics

Mastering Calculations in Linear and Nonlinear Mechanics PDF Author: Pierre Ladevèze
Publisher: Springer Science & Business Media
ISBN: 9780387212944
Category : Technology & Engineering
Languages : en
Pages : 438

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Book Description
This book deals with the management of calculations in linear and nonlinear mechanics. Particular attention is given to error estimators and indicators for structural analysis. The accent is on the concept of error in constitutive relation. An important part of the work is also devoted to the utilization of the error estimators involved in a calculation, beginning with the parameters related to the mesh. Many of the topics are taken from the most recent research by the authors: local error estimators, extention of the concept of error in constitutive relation to nonlinear evolution problems and dynamic problems, adaptive improvement of calculations in nonlinear mechanics. This work is intended for all those interested in mechanics: students, researchers and engineers concerned with the construction of models as well as their simulation for industrial purposes.

Singular Problems in Shell Theory

Singular Problems in Shell Theory PDF Author: Evariste Sanchez-Palencia
Publisher: Springer Science & Business Media
ISBN: 3642138152
Category : Science
Languages : en
Pages : 272

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Book Description
This book deals with various aspects in relation with thin shell theory: general geometric formalism of shell theory, analysis of singularities, numerical computing of thin shell problems, mathematical considerations on boundary values problems.

Dictionary of Building and Civil Engineering

Dictionary of Building and Civil Engineering PDF Author: Don Montague
Publisher: Taylor & Francis
ISBN: 9780419199106
Category : Architecture
Languages : en
Pages : 472

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Book Description
This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Integrated Design and Manufacturing in Mechanical Engineering

Integrated Design and Manufacturing in Mechanical Engineering PDF Author: Patrick Chedmail
Publisher: Springer
ISBN: 9789401063562
Category : Technology & Engineering
Languages : en
Pages : 545

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Book Description
This volume contains the selected papers of the first I.D.M.M.E. conference on 'Integrated Design and Manufacturing in Mechanical Engineering', held in Nantes from 15-17 April 1996. Its objective was to discuss the questions related to the definition of the optimal design and manufacturing processes and to their integration through coherent methodologies in adapted environments. The initiative of the Conference and the organization thereof, is mainly due to the efforts of the french PRIMECA group (Pool of Computer Resources for Mechanics) started eight years ago. We were able to attract the internationru community with the support of the International Institution for Production Engineering Research (C.I.R.P.). The conference brought together two hundred and fifty specialists from around the world. About ninety papers and twenty posters were presented covering three main topics : optimization and evaluation of the product design process, optimization and evaluation of the manufacturing systems and methodological aspects.

Structural Conservation of Stone Masonry

Structural Conservation of Stone Masonry PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description


Product Life-Cycle Management

Product Life-Cycle Management PDF Author: Max Giordano
Publisher: John Wiley & Sons
ISBN: 1118587529
Category : Business & Economics
Languages : en
Pages : 389

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Book Description
This book gives a comprehensive view of the most recent major international research in the field of tolerancing, and is an excellent resource for anyone interested in Computer Aided Tolerating. It is organized into 4 parts. Part 1 focuses on the more general problems of tolerance analysis and synthesis, for tolerancing in mechanical design and manufacturing processes. Part 2 specifically highlights the simulation of assembly with defects, and the influence of tolerances on the quality of the assembly. Part 3 deals with measurement aspects, and quality control throughout the life cycle. Different measurement technologies and methods for estimating uncertainty are considered. In Part 4, different aspects of tolerancing and their interactions are explored, from the definition of functional requirement to measurement processes in a PLM approach.

Mechanical Behavior of Concrete

Mechanical Behavior of Concrete PDF Author: Jean-Michel Torrenti
Publisher: John Wiley & Sons
ISBN: 1118622308
Category : Technology & Engineering
Languages : en
Pages : 326

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Book Description
This title provides a comprehensive overview of all aspects of the mechanical behavior of concrete, including such features as its elastoplasticity, its compressive and tensile strength, its behavior over time (including creep and shrinkage, cracking and fatigue) as well as modeling techniques and its response to various stimuli. As such, it will be required reading for anyone wishing to increase their knowledge in this area.

Properties of UO2

Properties of UO2 PDF Author: J. Belle
Publisher:
ISBN:
Category : Nuclear fuels
Languages : en
Pages : 146

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Convex Analysis and Variational Problems

Convex Analysis and Variational Problems PDF Author: Ivar Ekeland
Publisher: SIAM
ISBN: 9781611971088
Category : Mathematics
Languages : en
Pages : 414

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Book Description
This book contains different developments of infinite dimensional convex programming in the context of convex analysis, including duality, minmax and Lagrangians, and convexification of nonconvex optimization problems in the calculus of variations (infinite dimension). It also includes the theory of convex duality applied to partial differential equations; no other reference presents this in a systematic way. The minmax theorems contained in this book have many useful applications, in particular the robust control of partial differential equations in finite time horizon. First published in English in 1976, this SIAM Classics in Applied Mathematics edition contains the original text along with a new preface and some additional references.