Modélisation multi-échelles de structures hétérogènes aux comportements anélastiques non-linéaires

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ISBN 13 : 9782110950994
Total Pages : 131 pages
Book Rating : 4.9/5 (59 download)

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Book Synopsis Modélisation multi-échelles de structures hétérogènes aux comportements anélastiques non-linéaires by : Damijan Marcovič

Download or read book Modélisation multi-échelles de structures hétérogènes aux comportements anélastiques non-linéaires written by Damijan Marcovič and published by . This book was released on 2005 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lors de la conception des structures du génie civil et du génie mécanique il est très important de pouvoir prévoir comportement près de leur état ultime. Or, les matériaux utilisés sont souvent fortement hétérogènes, comme par exemple le béton et les métaux composites, et sont en conséquence difficiles à modéliser en cas de sollicitations extrêmes. Dans ce travail nous proposons une nouvelle stratégie multi échelles adaptée pour ce type des problèmes. Selon l'approche on couple un modèle basé sur la méthode des éléments finis (MEF) à l'échelle de la structure (macro) avec un modèle très fin à l'échelle de la microstructure (micro), lui aussi basé sur la MEF. Cela nous permet de modéliser l'échelle micro beaucoup plus fidèlement que ce qui est possible avec les approches phénoménologiques ou avec des méthodes d'homogénéisation analytique. L'inconvénient principal d'une telle approche étant en général le coût de calcul très élévé, nous considérons trois aspects rendant possible une application aux situations réelles. Premièrement, la formulation variationnelle permet de n'utiliser le modèle fin que dans les parties restreintes de la structure, là où les échelles sont vraiment fortement couplées, tout en gardant un modèle homogénéisé ailleurs. Deuxièment, nous adaptons la MEF sur l'échelle micro en employant l'approche dite structurée, avec laquelle on peut réduire le nombre de degrés de liberté d'une manière importante en gardant la même précision. Le troisième aspect porte sur l'implantation de la méthode dans un code de calcul, adaptée pour des machines parallèles, ce qui nous a permis de lancer les analyses d'une taille comparable à celle des situations réelles. Enfin, nous montrons de quelle manière cette approche peut être utilisée dans l'optimisation de forme des inclusions d'un matériau composite.

Nonlinear Solid Mechanics

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Publisher : Springer Science & Business Media
ISBN 13 : 9048123305
Total Pages : 588 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Nonlinear Solid Mechanics by : Adnan Ibrahimbegovic

Download or read book Nonlinear Solid Mechanics written by Adnan Ibrahimbegovic and published by Springer Science & Business Media. This book was released on 2009-06-02 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a recipe for constructing the numerical models for representing the complex nonlinear behavior of structures and their components, represented as deformable solid bodies. Its appeal extends to those interested in linear problems of mechanics.

From Microstructure Investigations to Multiscale Modeling

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Publisher : John Wiley & Sons
ISBN 13 : 1786302594
Total Pages : 304 pages
Book Rating : 4.7/5 (863 download)

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Book Synopsis From Microstructure Investigations to Multiscale Modeling by : Delphine Brancherie

Download or read book From Microstructure Investigations to Multiscale Modeling written by Delphine Brancherie and published by John Wiley & Sons. This book was released on 2018-01-04 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical behaviors of materials are highly influenced by their architectures and/or microstructures. Hence, progress in material science involves understanding and modeling the link between the microstructure and the material behavior at different scales. This book gathers contributions from eminent researchers in the field of computational and experimental material modeling. It presents advanced experimental techniques to acquire the microstructure features together with dedicated numerical and analytical tools to take into account the randomness of the micro-structure.

Damage Assessment and Reconstruction after War or Natural Disaster

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Publisher : Springer Science & Business Media
ISBN 13 : 9048123860
Total Pages : 390 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Damage Assessment and Reconstruction after War or Natural Disaster by : Adnan Ibrahimbegovic

Download or read book Damage Assessment and Reconstruction after War or Natural Disaster written by Adnan Ibrahimbegovic and published by Springer Science & Business Media. This book was released on 2009-05-14 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1.1. SAFETY OF CIVIL STRUCTURES Society expects that the failure of civil structures is extremely rare and relies on the care and expertise of the professionals involved in the design, construction and maintenance of structures. This is in particular true for public technical systems such as transportation or energy supply systems and structures such as bridges. Structural safety may be defined as follows: “Adequate safety with respect to a hazard is ensured provided that the hazard is kept under control by appropriate measures or the risk is limited to an acceptable value. Absolute safety is not achievable.” It is thus not the structure as such that is designated safe but rather the people, goods and the environment in its surroundings. The continued use of existing structures is of great importance because the built environment is a huge economic and political asset, growing larger every year. Nowadays evaluation of the safety of existing structures is a major engineering task, and structural engineers are increasingly called upon to devise ways for extending the life of structures whilst observing tight cost constraints. Also, existing structures are expected to resist against accidental actions although they were not designed for. Engineers may apply specific methods for evaluation in order to preserve structures and to reduce a client’s expenditure. The ultimate goal is to limit construction intervention to a minimum, a goal that is clearly in agreement with the principles of sustainable development.

Shell Structures, Theory and Applications

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Publisher : CRC Press
ISBN 13 : 9780415383905
Total Pages : 656 pages
Book Rating : 4.3/5 (839 download)

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Book Synopsis Shell Structures, Theory and Applications by : Wojciech Pietraszkiewicz

Download or read book Shell Structures, Theory and Applications written by Wojciech Pietraszkiewicz and published by CRC Press. This book was released on 2005-09-22 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shells are basic structural elements of modern technology. Examples of shell structures include automobile bodies, domes, water and oil tanks, pipelines, ship hulls, aircraft fuselages, turbine blades, laudspeaker cones, but also balloons, parachutes, biological membranes, a human skin, a bottle of wine or a beer can. This volume contains full texts of over 100 papers presented by specialists from over 20 countries at the 8th Conference "Shell Structures: Theory and Applications", 12-14 October, 2005 in Jurata (Poland). The aim of the meeting was to bring together scientists, designers, engineers and other specialists in shell structures in order to discuss important results and new ideas in this field. The goal is to pursue more accurate theoretical models, to develop more powerful and versatile methods of analysis, and to disseminate expertise in design and maintenance of shell structures. Among the authors there are many distinguished specialists of shell structures, including the authors of general lectures: I.V. Andrianov (Ukraine), V.A. Eremeyev (Russia), A. Ibrahimbegovic (France), P. Klosowski (Poland), B.H. Kröplin (Germany), E. Ramm (Germany), J.M. Rotter (UK) and D. Steigmann (USA). The subject area of the papers covers various theoretical models and numerical analyses of strength, dynamics, stability, optimization etc. of different types of shell structures, their design and maintenance, as well as modelling of some surface-related mechanical phenomena.

Plates and Shells

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821873281
Total Pages : 292 pages
Book Rating : 4.8/5 (732 download)

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Book Synopsis Plates and Shells by : Michel Fortin

Download or read book Plates and Shells written by Michel Fortin and published by American Mathematical Soc.. This book was released on 1999-06-23 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume features the proceedings from the Summer Seminar of the Canadian Mathematical Society held at Universite Laval. The purpose of the seminar was to gather both mathematicians and engineers interested in the theory or application of plates and shells, or more generally, in the modelisation of thin structures. From this, it was hoped that a better understanding of the problem would emerge for both groups of professionals. New aspects from the mathematical point of view and new applications posing new challenges are reported. This volume offers a snapshot of the state of the art of this rapidly evolving topic.

IUTAM Symposium on Computational Mechanics of Solid Materials at Large Strains

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Publisher : Springer Science & Business Media
ISBN 13 : 9401702977
Total Pages : 487 pages
Book Rating : 4.4/5 (17 download)

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Book Synopsis IUTAM Symposium on Computational Mechanics of Solid Materials at Large Strains by : Christian Miehe

Download or read book IUTAM Symposium on Computational Mechanics of Solid Materials at Large Strains written by Christian Miehe and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: The steady increase in computational power induces an equally steady increase in the complexity of the engineering models and associated computer codes. This particularly affects the modeling of the mechanical response of materials. Material behavior is nowadays modeled in the strongly nonlinear range by tak ing into account finite strains, complex hysteresis effects, fracture phenomena and multiscale features. Progress in this field is of fundamental importance for many engineering disciplines, especially those concerned with material testing, safety, reliability and serviceability analyses of engineering structures. In recent years many important achievements have been made in the field of the theoretical formulation, the mathematical analysis and the numerical im plementation of deformation processes in solids. Computational methods and simulation techniques today play a central role in advancing the understanding of complex material behavior. Research in the field of "ComputationalMechan ics of Materials" is concerned with the development of mathematical models and numerical solution techniques for the simulation of material response. It is a very broad interdisciplinary field of science with inputs from traditional fields such as Applied Mechanics, Applied Mathematics, Materials Science, Solid State Physics and Information Technology. The intention of the IUTAM Symposium "Computational Mechanics of Solid Materials at Large Strains", held at the University of Stuttgart, Germany, from August 20-24, 200I, was to give a state of the art and a survey about recent developments in this field and to create perspectives for future research trends.

SEECCM 2009

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ISBN 13 : 9789602546833
Total Pages : 226 pages
Book Rating : 4.5/5 (468 download)

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Book Synopsis SEECCM 2009 by : Manolis Papadrakakis

Download or read book SEECCM 2009 written by Manolis Papadrakakis and published by . This book was released on 2009 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Engineering Structures

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Publisher : Emerald Group Pub Limited
ISBN 13 : 9781845441630
Total Pages : 260 pages
Book Rating : 4.4/5 (416 download)

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Book Synopsis Engineering Structures by : Adnan Ibrahimbegovic

Download or read book Engineering Structures written by Adnan Ibrahimbegovic and published by Emerald Group Pub Limited. This book was released on 2005 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains extended versions of the papers first presented by several invited speakers at the NATO-sponsored advanced research workshop on "Multi-physics and multi-scale computer models in non-linear analysis and optimal design of engineering structures under extreme conditions," which was held in Bled, Slovenia, from June 13 to 17, 2004. It also features a couple of papers contributed by young researchers, who all made short presentations of their research works at that meeting. The collected papers seek to present the most recent research achievements on this currently very active research topic and include contributions on nonlinear structural analysis, on optimal design of structures and microstructures, as well as on the structural parameters identification Originally published as Engineering Computations (2005, Vol.22, No.5/6)

Flexible Multibody Dynamics

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Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 352 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Flexible Multibody Dynamics by : Michel Géradin

Download or read book Flexible Multibody Dynamics written by Michel Géradin and published by John Wiley & Sons. This book was released on 2001-03-05 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flexible Multibody Dynamics comprehensively describes the numerical modelling of flexible multibody dynamics systems in space and aircraft structures, vehicles, and mechanical systems. A rigorous approach is followed to handle finite rotations in 3D, with a thorough discussion of the different alternatives for parametrization. Modelling of flexible bodies is treated following the Finite Element technique, a novel aspect in multibody systems simulation. Moreover, this book provides extensive coverage of the formulation of a general purpose software for flexible multibody dynamics analysis, based on an exhaustive treatment of large rotations and finite element modelling, and incorporating useful reference material. Features include different solution techniques such as: * time integration of differential-algebraic equations * non-linear substructuring * continuation methods * nonlinear bifurcation analysis. In essence, this is an ideal text for senior undergraduates, postgraduates and professionals in mechanical and aeronautical engineering, as well as mechanical design engineers and researchers, and engineers working in areas such as kinematics and dynamics of deployable structures, vehicle dynamics and mechanical design.

Performance-Based Seismic Engineering: Vision for an Earthquake Resilient Society

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Publisher : Springer
ISBN 13 : 9401788758
Total Pages : 503 pages
Book Rating : 4.4/5 (17 download)

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Book Synopsis Performance-Based Seismic Engineering: Vision for an Earthquake Resilient Society by : Matej Fischinger

Download or read book Performance-Based Seismic Engineering: Vision for an Earthquake Resilient Society written by Matej Fischinger and published by Springer. This book was released on 2014-07-15 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bled workshops have traditionally produced reference documents providing visions for the future development of earthquake engineering as foreseen by leading researchers in the field. The participants of the 2011 workshop built on the tradition of these events initiated by Professors Fajfar and Krawinkler to honor their important research contributions and have now produced a book providing answers to crucial questions in today’s earthquake engineering: “What visible changes in the design practice have been brought about by performance-based seismic engineering? What are the critical needs for future advances? What actions should be taken to respond to those needs?” The key answer is that research interests should go beyond the narrow technical aspects and that the seismic resilience of society as a whole should become an essential part of the planning and design process. The book aims to provide essential guidelines for researchers, professionals and students in the field of earthquake engineering. It will also be of particular interest for all those working at insurance companies, governmental, civil protection and emergency management agencies that are responsible for assessing and planning community resilience. The introductory chapter of the book is based on the keynote presentation given at the workshop by the late Professor Helmut Krawinkler. As such, the book includes Helmut’s last and priceless address to the engineering community, together with his vision and advice for the future development of performance-based design, earthquake engineering and seismic risk management.

Nonlinear Instability Analysis

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Publisher :
ISBN 13 : 9781853128424
Total Pages : 0 pages
Book Rating : 4.1/5 (284 download)

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Book Synopsis Nonlinear Instability Analysis by : Lokenath Debnath

Download or read book Nonlinear Instability Analysis written by Lokenath Debnath and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nonlinear Dynamics of Structures

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Publisher : Springer
ISBN 13 : 3319051946
Total Pages : 203 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Nonlinear Dynamics of Structures by : Sergio Oller

Download or read book Nonlinear Dynamics of Structures written by Sergio Oller and published by Springer. This book was released on 2014-09-04 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book lays the foundation of knowledge that will allow a better understanding of nonlinear phenomena that occur in structural dynamics. This work is intended for graduate engineering students who want to expand their knowledge on the dynamic behavior of structures, specifically in the nonlinear field, by presenting the basis of dynamic balance in non‐linear behavior structures due to the material and kinematics mechanical effects. Particularly, this publication shows the solution of the equation of dynamic equilibrium for structure with nonlinear time‐independent materials (plasticity, damage and frequencies evolution), as well as those time dependent non‐linear behavior materials (viscoelasticity and viscoplasticity). The convergence conditions for the non‐linear dynamic structure solution are studied and the theoretical concepts and its programming algorithms are presented.

Structural Synthesis of Parallel Robots

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Publisher : Springer Science & Business Media
ISBN 13 : 1402097948
Total Pages : 774 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Structural Synthesis of Parallel Robots by : Grigore Gogu

Download or read book Structural Synthesis of Parallel Robots written by Grigore Gogu and published by Springer Science & Business Media. This book was released on 2009-02-15 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt: “The mathematical investigations referred to bring the whole apparatus of a great science to the examination of the properties of a given mechanism, and have accumulated in this direction rich material, of enduring and increasing value. What is left unexamined is however the other, immensely deeper part of the problem, the question: How did the mechanism, or the elements of which it is composed, originate? What laws govern its building up? Is it indeed formed according to any laws whatever? Or have we simply to accept as data what invention gives us, the analysis of what is thus obtained being the only scientific problem left – as in the case of natural history?” Reuleaux, F., Theoretische Kinematik, Braunschweig: Vieweg, 1875 Reuleaux, F., The Kinematics of Machinery, London: Macmillan, 1876 and New York: Dover, 1963 (translated by A.B.W. Kennedy) This book represents the second part of a larger work dedicated to the structural synthesis of parallel robots. Part 1 already published in 2008 (Gogu 2008a) has presented the methodology proposed for structural synthesis. This book focuses on various topologies of translational parallel robots systematically generated by using the structural synthesis approach proposed in Part 1. The originality of this work resides in the fact that it combines the new formulae for mobility connectivity, redundancy and overconstraints, and the evolutionary morphology in a unified approach of structural synthesis giving interesting innovative solutions for parallel mechanisms.

The Finite Element Method

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Publisher : McGraw-Hill Science, Engineering & Mathematics
ISBN 13 : 9780070841758
Total Pages : 648 pages
Book Rating : 4.8/5 (417 download)

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Book Synopsis The Finite Element Method by : O. C. Zienkiewicz

Download or read book The Finite Element Method written by O. C. Zienkiewicz and published by McGraw-Hill Science, Engineering & Mathematics. This book was released on 1991 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fourth edition has been divided into two volumes.