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Gradient Enhanced Continuum Plasticity

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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

Handbook of Micromechanics and Nanomechanics

Handbook of Micromechanics and Nanomechanics Book
Author : Shaofan Li,Xin-Lin Gao
Publisher : CRC Press
Release : 2016-04-19
ISBN : 9814411248
Language : En, Es, Fr & De

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Book Description :

This book presents the latest developments and applications of micromechanics and nanomechanics. It particularly focuses on some recent applications and impact areas of micromechanics and nanomechanics that have not been discussed in traditional micromechanics and nanomechanics books on metamaterials, micromechanics of ferroelectric/piezoelectric, electromagnetic materials, micromechanics of interface, size effects and strain gradient theories, computational and experimental nanomechanics, multiscale simulations and theories, soft matter composites, and computational homogenization theory. This book covers analytical, experimental, as well as computational and numerical approaches in depth.

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

Computational Modelling of Concrete Structures

Computational Modelling of Concrete Structures Book
Author : Gunther Meschke,René de Borst,Herbert Mang,Nenad Bicanic
Publisher : CRC Press
Release : 2020-11-26
ISBN : 100011614X
Language : En, Es, Fr & De

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Book Description :

This conference proceedings brings together the work of researchers and practising engineers concerned with computational modelling of complex concrete, reinforced concrete and prestressed concrete structures in engineering practice. The subjects considered include computational mechanics of concrete and other cementitious materials, including masonry. Advanced discretisation methods and microstructural aspects within multi-field and multi-scale settings are discussed, as well as modelling formulations and constitutive modelling frameworks and novel experimental programmes. The conference also considered the need for reliable, high-quality analysis and design of concrete structures in regard to safety-critical structures, with a view to adopting these in codes of practice or recommendations. The book is of special interest to researchers in computational mechanics, and industry experts in complex nonlinear simulations of concrete structures.

Computational Modelling of Concrete Structures

Computational Modelling of Concrete Structures Book
Author : Nenad Bicanic,René Borst,Herbert Mang,Gunther Meschke
Publisher : CRC Press
Release : 2010-02-24
ISBN : 1439859574
Language : En, Es, Fr & De

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Book Description :

Since 1984 the EURO-C conference series (Split 1984, Zell am See 1990, Innsbruck 1994, Badgastein 1998, St Johann im Pongau 2003, Mayrhofen 2006, Schladming 2010) has provided a forum for academic discussion of the latest theoretical, algorithmic and modelling developments associated with computational simulations of concrete and concrete structure

Examination of Two Regularized Damage plasticity Models for Concrete with Regard to Crack Closing

Examination of Two Regularized Damage plasticity Models for Concrete with Regard to Crack Closing Book
Author : N.A
Publisher :
Release : 2018
ISBN :
Language : En, Es, Fr & De

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Book Description :

Abstract: Continuum models of fracture should be equipped with a localization limiter to prevent pathological discretization sensitivity of finite element simulations. Moreover, stiffness recovery, called also crack closing effect, should be reproduced in the modelling of quasi-brittle materials when reversed loading is applied. In this paper the efficiency of two different established damage-plasticity models for concrete is assessed from the viewpoint of the two above-mentioned aspects. The first description is the so-called concrete damaged plasticity model, available in the ABAQUS package. In this model the plasticity theory is not only augmented with stiffness degradation and recovery, but also with the crack band approach and viscoplastic regularization. The gradient-enhanced damage description, which is the second one considered, can also be coupled to plasticity. In this model additional averaging equation prevents the pathological discretization sensitivity of fracture simulations. Two fields, displacements and averaged strain measure, are interpolated and suitable finite elements are programmed by the authors in the FEAP package. Basic concepts of the numerical analysis of the crack closing phenomenon are reviewed. Both models are capable of avoiding mesh-sensitivity, but it is achieved in a different manner and it is shown in the paper that the users of ABAQUS should employ the crack band options with particular care. Representative examples in the context of the examined issues are demonstrated: uniaxial tension of a bar and a cantilever beam. The results obtained using both the models are compared and the effects of regularization and crack closing are illustrated.

AIAA Journal

AIAA Journal Book
Author : American Institute of Aeronautics and Astronautics
Publisher :
Release : 2007
ISBN :
Language : En, Es, Fr & De

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Book Description :

Continuum Models for Materials with Microstructure

Continuum Models for Materials with Microstructure Book
Author : H.-B. Mühlhaus
Publisher : John Wiley & Son Limited
Release : 1995
ISBN :
Language : En, Es, Fr & De

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Book Description :

Continuum Models for Materials with Microstructure Edited by H. B. Mühlhaus, CSIRO, Nedlands, Australia When the characteristic length-scale (‘fabric dimension’) of the microstructure of materials is not small when compared to the macroscopic dimensions, the well established framework for the modelling of deformation processes for simple materials needs enhancement. To introduce an internal length scale, one has to resort to continuum models such as Nonlocal Theories, Cosserat or Gradient-type Models, Discrete Element and Lattice Theories or modified Viscoplastic Models. These new approaches are addressed in this volume. It includes contributions from research areas as diverse as bio-mechanics, concrete engineering and solid state physics. Generalised continuum models and its applications are presented and complemented by numerical and analytical tools for the solution of boundary value problems.

Computational Plasticity

Computational Plasticity Book
Author : International Conference on Computational Plasticity
Publisher :
Release : 1997
ISBN : 9788487867873
Language : En, Es, Fr & De

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Book Description :

Material Instabilities in Solids

Material Instabilities in Solids Book
Author : René de Borst,Erik van der Giessen
Publisher : John Wiley & Sons
Release : 1998-10-15
ISBN :
Language : En, Es, Fr & De

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Book Description :

Modern, powerful computational methods, combined with major improvements in experimental techniques, have resulted in significant advances in the study of material instabilities. This book presents the latest research in the field of material instabilities in solid materials (soils, concrete, rocks, ceramics, metals, polymers and composites) and associated phenomena, such as strain localisation, fracture and failure in general. Collected within this volume are the cutting edge contributions from the prestigious IUTAM Symposium of 1997. A broad spectrum of materials is covered, with the emphasis on common aspects of failure, and a full range of experimental, analytical and numerical methods are addressed. In addition, the state-of-the-art, and recent advances covered in the book are summarised in the introductory chapter. No other treatise is available which is so up to date and compiled by such a broad spectrum of leading researchers. This book will find a wide appeal amongst practising engineers, researchers and students in civil, mechanical and aerospace engineering, and researchers and students in materials science.

Euromech Mecamat 96

Euromech   Mecamat 96 Book
Author : André Pineau,G. Rousselier
Publisher :
Release : 1996
ISBN :
Language : En, Es, Fr & De

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Book Description :