Multiscale Phenomena in Plasticity: From Experiments to Phenomenology, Modelling and Materials Engineering

Multiscale Phenomena in Plasticity: From Experiments to Phenomenology, Modelling and Materials Engineering
Author: Joël Lépinoux
Publisher: Springer Science & Business Media
Total Pages: 540
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 9401140480

A profusion of research and results on the mechanical behaviour of crystalline solids has followed the discovery of dislocations in the early thirties. This trend has been enhanced by the development of powerful experimental techniques. particularly X ray diffraction. transmission and scanning electron microscopy. microanalysis. The technological advancement has given rise to the study of various and complex materials. not to speak of those recently invented. whose mechanical properties need to be mastered. either for their lise as structural materials. or more simply for detenllining their fonnability processes. As is often the case this fast growth has been diverted both by the burial of early fundamental results which are rediscovered more or less accurately. and by the too fast publication of inaccurate results. which propagate widely. and are accepted without criticism. Examples of these statements abound. and will not be quoted here for the sake of dispassionateness. Understanding the mechanical properties of materials implies the use of various experimental techniques. combined with a good theoretical knowledge of elasticity. thermodynamics and solid state physics. The recent development of various computer techniques (simulation. ab initio calculations) has added to the difficulty of gathering the experimental information. and mastering the theoretical understanding. No laboratory is equipped with all the possible experimental settings. almost no scientist masters all this theoretical kno\vledge. Therefore. cooperation between scientists is needed more than even before.

Multiscale Modelling of Plasticity and Fracture by Means of Dislocation Mechanics

Multiscale Modelling of Plasticity and Fracture by Means of Dislocation Mechanics
Author: Peter Gumbsch
Publisher: Springer Science & Business Media
Total Pages: 401
Release: 2011-01-30
Genre: Technology & Engineering
ISBN: 3709102839

The latest state of simulation techniques to model plasticity and fracture in crystalline materials on the nano- and microscale is presented. Discrete dislocation mechanics and the neighbouring fields molecular dynamics and crystal plasticity are central parts. The physical phenomena, the theoretical basics, their mathematical description and the simulation techniques are introduced and important problems from the formation of dislocation structures to fatigue and fracture from the nano- to microscale as well as it’s impact on the macro behaviour are considered.

Multiscale Plasticity

Multiscale Plasticity
Author: Nasr Ghoniem
Publisher: Wiley
Total Pages: 0
Release: 2020-01-28
Genre: Technology & Engineering
ISBN: 9781118410929

Multiscale Plasticity Nasr M Ghoniem and Giacomo Po, UCLA, USA A comprehensive treatment of plastic deformation at multiple length scales Plastic deformation is an important subject as a result of the wide use of metals in many technological applications, the fact that it is associated with failure mechanisms, and because of the emergence of strain engineering in the microelectronics industry. Plasticity is also becoming a significant factor in the design of nano and micro systems. Multiscale Plasticity addresses the subject of plasticity in a comprehensive manner, utilizing the multiscale modelling of materials (MMM) approach to systematically reduce the degrees of freedom at natural length scales. At the atomic scale, computer simulation methods, such as Molecular Dynamics (MD) and the Kinetic Monte Carlo (KMC) are presented. The book then discusses the role played by Dislocation Dynamics (DD) and Statistical Mechanics (SM) methods in understanding microstructure self-organization, heterogeneous plastic deformation, material instabilities and failure phenomena. At the macro-scale, emphasis is placed on recent progress made in crystal plasticity, strain gradient elasticity, strain gradient plasticity, and homogenization techniques. Key Features: Presents a physically based approach to the description of plasticity. Modern computational methods are introduced to the reader at multiple length scales, from the atoms all the way up to the continuum level. Direct comparisons between experiment and multiscale modelling. Applications are given in nano and micro-technologies, as well as examples of materials-by-design. Pedagogical in nature, Multiscale Plasticity leads the reader to a more in-depth understanding of plasticity at all length scales for a wide range of applications.

Multiscale Phenomena in Materials - Experiments in Modeling:

Multiscale Phenomena in Materials - Experiments in Modeling:
Author: I. M. Robertson
Publisher: Cambridge University Press
Total Pages: 512
Release: 2014-06-05
Genre: Technology & Engineering
ISBN: 9781107414136

There has been increasing interest in using what are termed 'multiscale modeling' approaches to understand the effects of composition and microstructure on mechanical behavior. It is now quite common to find publications that report on related phenomena using atomistic, microscale (dislocation dynamics) and mesoscale/continuum computer simulations. With this enhanced interest in multiscale phenomena emerges a need for experimental work that validates and challenges the predictive capabilities of modeling and simulations. This book brings together experimentalists and modelers working in common areas of interest, to exchange information and lead to more tightly coupled experimental and modeling work. Topics include: plasticity at the continuum length scale; nonlocal plastic theory and dislocation phenomena; dislocation dynamics - experiments and simulation; dislocation core properties and effects; fracture and crack propagation; dislocation interactions with interfaces and grain boundaries; and microstructural modeling for industrial metals processing.

Crystal Plasticity Finite Element Methods

Crystal Plasticity Finite Element Methods
Author: Franz Roters
Publisher: John Wiley & Sons
Total Pages: 188
Release: 2011-08-04
Genre: Technology & Engineering
ISBN: 3527642099

Written by the leading experts in computational materials science, this handy reference concisely reviews the most important aspects of plasticity modeling: constitutive laws, phase transformations, texture methods, continuum approaches and damage mechanisms. As a result, it provides the knowledge needed to avoid failures in critical systems udner mechanical load. With its various application examples to micro- and macrostructure mechanics, this is an invaluable resource for mechanical engineers as well as for researchers wanting to improve on this method and extend its outreach.

Plasticity and Beyond

Plasticity and Beyond
Author: Jörg Schröder
Publisher: Springer Science & Business Media
Total Pages: 417
Release: 2013-09-20
Genre: Science
ISBN: 3709116252

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.

Dynamics, Strength of Materials and Durability in Multiscale Mechanics

Dynamics, Strength of Materials and Durability in Multiscale Mechanics
Author: Francesco dell'Isola
Publisher: Springer Nature
Total Pages: 403
Release: 2020-11-01
Genre: Science
ISBN: 3030537552

This book reviews the mathematical modeling and experimental study of systems involving two or more different length scales. The effects of phenomena occurring at the lower length scales on the behavior at higher scales are of intrinsic scientific interest, but can also be very effectively used to determine the behavior at higher length scales or at the macro-level. Efforts to exploit this micro- and macro-coupling are, naturally, being pursued with regard to every aspect of mechanical phenomena. This book focuses on the changes imposed on the dynamics, strength of materials and durability of mechanical systems by related multiscale phenomena. In particular, it addresses: 1: the impacts of effective dissipation due to kinetic energy trapped at lower scales 2: wave propagation in generalized continua 3: nonlinear phenomena in metamaterials 4: the formalization of more general models to describe the exotic behavior of meta-materials 5: the design and study of microstructures aimed at increasing the toughness and durability of novel materials