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Size Effects In Plasticity

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Size Effects in Plasticity

Size Effects in Plasticity Book
Author : George Voyiadjis,Mohammadreza Yaghoobi
Publisher : Academic Press
Release : 2019-08-01
ISBN : 0128135131
Language : En, Es, Fr & De

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Book Description :

Size Effects in Plasticity: From Macro to Nano provides concise explanations of all available methods in this area, from atomistic simulation, to non-local continuum models to capture size effects. It then compares their applicability to a wide range of research scenarios. This essential guide addresses basic principles, numerical issues and computation, applications and provides code which readers can use in their own modeling projects. Researchers in the fields of computational mechanics, materials science and engineering will find this to be an ideal resource when they address the size effects observed in deformation mechanisms and strengths of various materials. Provides a comprehensive reference on the field of size effects and a review of mechanics of materials research in all scales Explains all major methods of size effects simulation, including non-local continuum models, non-local crystal plasticity, discrete dislocation methods and molecular dynamics Includes source codes that readers can use in their own projects

Size Scale Effects in the Failure Mechanisms of Materials and Structures

Size Scale Effects in the Failure Mechanisms of Materials and Structures Book
Author : Alberto Carpinteri
Publisher : CRC Press
Release : 2002-11-01
ISBN : 0203475925
Language : En, Es, Fr & De

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Book Description :

Invited international contributions to this exciting new research field are included in this volume. It contains the specially selected papers from 45 key specialists given at the Symposium held under the auspices of the prestigious International Union of Theoretical and Applied Mechanics at Turin in October 1994.

Gradient Enhanced Continuum Plasticity

Gradient Enhanced Continuum Plasticity Book
Author : George Z. Voyiadjis,Yooseob Song
Publisher : Elsevier
Release : 2020-03-27
ISBN : 0128177675
Language : En, Es, Fr & De

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Book Description :

Gradient-Enhanced Continuum Plasticity provides an expansive review of gradient-enhanced continuum plasticity from the initial stage to current research trends in experimental, theoretical, computational and numerical investigations. Starting with an overview of continuum mechanics and classical plasticity, the book then delves into concise lessons covering basic principles and applications, such as outlining the use of the finite element method to solve problems with size effects, mesh sensitivity and high velocity impact loading. All major theories are explored, providing readers with a guide to understanding the various concepts of and differences between an array of gradient-enhanced continuum plasticity models. Outlines the concepts of, and differences between, various gradient-enhanced continuum plasticity models Provides guidance on problem-solving for size effects, mesh-sensitivity tests and thermo-mechanical coupling Reviews experimental, numerical and theoretical issues in gradient-enhanced continuum plasticity Describes micromechanical aspects from experimental observations

Plasticity

Plasticity Book
Author : S. Nemat-Nasser
Publisher : Cambridge University Press
Release : 2004-11-29
ISBN : 9780521839792
Language : En, Es, Fr & De

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Book Description :

Publisher Description

Plasticity and Beyond

Plasticity and Beyond Book
Author : Jörg Schröder,Klaus Hackl
Publisher : Springer Science & Business Media
Release : 2013-09-20
ISBN : 3709116252
Language : En, Es, Fr & De

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Book Description :

The book presents the latest findings in experimental plasticity, crystal plasticity, phase transitions, advanced mathematical modeling of finite plasticity and multi-scale modeling. The associated algorithmic treatment is mainly based on finite element formulations for standard (local approach) as well as for non-standard (non-local approach) continua and for pure macroscopic as well as for directly coupled two-scale boundary value problems. Applications in the area of material design/processing are covered, ranging from grain boundary effects in polycrystals and phase transitions to deep-drawing of multiphase steels by directly taking into account random microstructures.

IUTAM Symposium on Size Effects on Material and Structural Behavior at Micron and Nano Scales

IUTAM Symposium on Size Effects on Material and Structural Behavior at Micron  and Nano Scales Book
Author : Q. P. Sun,P. Tong
Publisher : Springer Science & Business Media
Release : 2006-09-19
ISBN : 1402049463
Language : En, Es, Fr & De

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Book Description :

This volume is a collection of twenty five written contributions by distinguished invited speakers from seven countries to the IUTAM Symposium on Size Effects on Material and Structural Behavior at Micron- and Nano-scales. Size effects on material and structural behaviors are of great interest to physicists, material scientists, and engineers who need to understand and model the mechanical behavior of solids especially at micron- and nano-scales.

Mechanics of Strain Gradient Materials

Mechanics of Strain Gradient Materials Book
Author : Albrecht Bertram,Samuel Forest
Publisher : Springer
Release : 2020-08-15
ISBN : 9783030438296
Language : En, Es, Fr & De

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Book Description :

Over the past 50 years, strain gradient material theories have been developed for the continuum modeling of size effects in materials and structures in terms of their elasticity, plasticity and fracturing. This book puts forward a unifying perspective to combine existing theories involving the higher order gradient of the strain tensor, or of plastic strain. It begins by reviewing experimental findings on the existence (or non-existence) of size effects on the mechanics of materials. In turn, the book devises first, second and higher order strain gradient theories from general principles, and presents constitutive frameworks that satisfy thermodynamic requirements. The special case of strain gradient plasticity is then developed and illustrated via computational analyses of size effects on the plasticity of metals at small scales. In closing, the book explains the origin of gradient effects in the case of lattice structures by drawing on homogenization theory.

The Nano Micro Interface 2 Volumes

The Nano Micro Interface  2 Volumes Book
Author : Marcel Van de Voorde,Matthias Werner,Hans-Jörg Fecht
Publisher : John Wiley & Sons
Release : 2015-01-12
ISBN : 3527679219
Language : En, Es, Fr & De

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Book Description :

Controlling the properties of materials by modifying their composition and by manipulating the arrangement of atoms and molecules is a dream that can be achieved by nanotechnology. As one of the fastest developing and innovative -- as well as well-funded -- fields in science, nanotechnology has already significantly changed the research landscape in chemistry, materials science, and physics, with numerous applications in consumer products, such as sunscreens and water-repellent clothes. It is also thanks to this multidisciplinary field that flat panel displays, highly efficient solar cells, and new biological imaging techniques have become reality. This second, enlarged edition has been fully updated to address the rapid progress made within this field in recent years. Internationally recognized experts provide comprehensive, first-hand information, resulting in an overview of the entire nano-micro world. In so doing, they cover aspects of funding and commercialization, the manufacture and future applications of nanomaterials, the fundamentals of nanostructures leading to macroscale objects as well as the ongoing miniaturization toward the nanoscale domain. Along the way, the authors explain the effects occurring at the nanoscale and the nanotechnological characterization techniques. An additional topic on the role of nanotechnology in energy and mobility covers the challenge of developing materials and devices, such as electrodes and membrane materials for fuel cells and catalysts for sustainable transportation. Also new to this edition are the latest figures for funding, investments, and commercialization prospects, as well as recent research programs and organizations.

Elastic Plastic Fracture

Elastic Plastic Fracture Book
Author : J. D. Landes
Publisher : ASTM International
Release : 1979
ISBN : 9780803103306
Language : En, Es, Fr & De

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Book Description :

Advances in Heterogeneous Material Mechanics 2011

Advances in Heterogeneous Material Mechanics 2011 Book
Author : Jinghong Fan,Junqian Zhang,Haibo Chen,Zhaohui Jin
Publisher : DEStech Publications, Inc
Release : 2011
ISBN : 1605950548
Language : En, Es, Fr & De

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Book Description :

The third book in a series on heterogeneous materials, this volume offers integrated approaches to the measurement and modeling of materials using approaches from materials science, physics, mechanics, biology and other disciplines. The volume contains 289 chapters presenting original research on the connections among the nano- , micro-, and mesoscale mechanical properties and behaviors of many different types of engineered and natural heterogeneous materials. The book contains a wealth of never published multiscale data on materials loading behaviors, plasticity, creep, damage, fracture and failure. A separate section is devoted to the design and functionalization of materials using multiscale data and techniques

Developmental Plasticity and Evolution

Developmental Plasticity and Evolution Book
Author : Mary Jane West-Eberhard
Publisher : Oxford University Press
Release : 2003-03-13
ISBN : 9780198028567
Language : En, Es, Fr & De

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Book Description :

The first comprehensive synthesis on development and evolution: it applies to all aspects of development, at all levels of organization and in all organisms, taking advantage of modern findings on behavior, genetics, endocrinology, molecular biology, evolutionary theory and phylogenetics to show the connections between developmental mechanisms and evolutionary change. This book solves key problems that have impeded a definitive synthesis in the past. It uses new concepts and specific examples to show how to relate environmentally sensitive development to the genetic theory of adaptive evolution and to explain major patterns of change. In this book development includes not only embryology and the ontogeny of morphology, sometimes portrayed inadequately as governed by "regulatory genes," but also behavioral development and physiological adaptation, where plasticity is mediated by genetically complex mechanisms like hormones and learning. The book shows how the universal qualities of phenotypes--modular organization and plasticity--facilitate both integration and change. Here you will learn why it is wrong to describe organisms as genetically programmed; why environmental induction is likely to be more important in evolution than random mutation; and why it is crucial to consider both selection and developmental mechanism in explanations of adaptive evolution. This book satisfies the need for a truly general book on development, plasticity and evolution that applies to living organisms in all of their life stages and environments. Using an immense compendium of examples on many kinds of organisms, from viruses and bacteria to higher plants and animals, it shows how the phenotype is reorganized during evolution to produce novelties, and how alternative phenotypes occupy a pivotal role as a phase of evolution that fosters diversification and speeds change. The arguments of this book call for a new view of the major themes of evolutionary biology, as shown in chapters on gradualism, homology, environmental induction, speciation, radiation, macroevolution, punctuation, and the maintenance of sex. No other treatment of development and evolution since Darwin's offers such a comprehensive and critical discussion of the relevant issues. Developmental Plasticity and Evolution is designed for biologists interested in the development and evolution of behavior, life-history patterns, ecology, physiology, morphology and speciation. It will also appeal to evolutionary paleontologists, anthropologists, psychologists, and teachers of general biology.

Probing Crystal Plasticity at the Nanoscales

Probing Crystal Plasticity at the Nanoscales Book
Author : Arief Suriadi Budiman
Publisher : Springer
Release : 2014-12-27
ISBN : 981287335X
Language : En, Es, Fr & De

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Book Description :

This Brief highlights the search for strain gradients and geometrically necessary dislocations as a possible source of strength for two cases of deformation of materials at small scales: nanoindented single crystal copper and uniaxially compressed single crystal submicron gold pillars. When crystalline materials are mechanically deformed in small volumes, higher stresses are needed for plastic flow. This has been called the "Smaller is Stronger" phenomenon and has been widely observed. studies suggest that plasticity in one case is indeed controlled by the GNDs (strain gradient hardening), whereas in the other, plasticity is not controlled by strain gradients or sub-structure hardening, but rather by dislocation source starvation, wherein smaller volumes are stronger because fewer sources of dislocations are available (dislocation starvation hardening).

Computational Plasticity

Computational Plasticity Book
Author : Eugenio Oñate,Roger Owen
Publisher : Springer Science & Business Media
Release : 2010-03-25
ISBN : 9781402065774
Language : En, Es, Fr & De

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Book Description :

This book contains 14 invited contributions written by distinguished authors who participated in the VIII International Conference on Computational Plasticity held at CIMNE/UPC (www.cimne.com) from 5-8 September 2005, in Barcelona, Spain. The chapters present recent progress and future research directions in the field of computational plasticity.

Cognitive Plasticity in Neurologic Disorders

Cognitive Plasticity in Neurologic Disorders Book
Author : Joseph I Tracy,Benjamin M Hampstead,K. Sathian
Publisher : Oxford University Press
Release : 2014-11-04
ISBN : 0190205466
Language : En, Es, Fr & De

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Book Description :

Cognitive Plasticity in Neurologic Disorders describes and specifies the cognitive impact of neuroplastic processes in key neurologic disorders and syndromes. It is set apart from previous works in this area by its emphasis on the changing quality of neurocognition, demonstrating that this dynamic nature emerges from the neuroplastic processes at work in both mild and severe states of brain disease or injury. This resource describes the ways neurological illness or trauma (or attempts to treat patients with such conditions) can trigger neuroplastic mechanisms in the brain, inducing cognitive reorganization and remapping of brain networks. Each chapter shows how the cognitive and behavioral presentation of the disorder mirrors the changing neurobiologic context, and displays the numerous techniques being employed (e.g. behavior and rehabilitation therapies, electrical stimulation, and computer/machine neuromodulation of brain signals) underlying the neurobiology in ways that facilitate adaptive plasticity and cognitive recovery. An important feature of the book involves characterizing the degree to which the mechanistic principles governing neuroplastic responses and cognitive reorganization in the brain have been elucidated, making clear that it is these principles which will allow us to further develop rational rehabilitative therapies, match patients to appropriate treatments, and even begin to predict clinical treatment outcomes.

Inelastic Analysis of Structures

Inelastic Analysis of Structures Book
Author : Milan Jirasek,Zdenek P. Bazant
Publisher : John Wiley & Sons
Release : 2001-12-21
ISBN : 9780471987161
Language : En, Es, Fr & De

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Book Description :

The modeling of mechanical properties of materials and structures is a complex and wide-ranging subject. In some applications, it is sufficient to assume that the material remains elastic, i.e. that the deformation process is fully reversible and the stress is a unique function of strain. However, such a simplified assumption is appropriate only within a limited range, and in general must be replaced by a more realistic approach that takes into account the inelastic processes such as plastic yielding or cracking. This book presents a comprehensive treatment of the most important areas of plasticity and of time-dependent inelastic behavior (viscoplasticity of metals, and creep and shrinkage of concrete). It covers structural aspects such as: * incremental analysis * limit analysis * shakedown analysis * optimal design * beam structures subjected to bending and torsion * yield line theory of plates * slip line theory * size effect in structures * creep and shrinkage effects in concrete structures. The following aspects of the advanced material modeling are presented: * yield surfaces for metals and plastic-frictional materials * hardening and softening * stress-return algorithms * large-strain formulations * thermodynamic framework * microplane models * localization of plastic strain. Inelastic Analysis of Structures is a textbook for basic and advanced courses on plasticity, with a slight emphasis on structural engineering applications, but with a wealth of material for geotechnical, mechanical, aerospace, naval, petroleum and nuclear engineers. The text is constructed in a very didactical way, while the mathematics has been kept rigorous.