Dislocations, Mesoscale Simulations and Plastic Flow
Title | Dislocations, Mesoscale Simulations and Plastic Flow PDF eBook |
Author | Ladislas Kubin |
Publisher | OUP Oxford |
Pages | 320 |
Release | 2013-04-18 |
Genre | Science |
ISBN | 0191664545 |
In the past twenty years, new experimental approaches, improved models and progress in simulation techniques brought new insights into long-standing issues concerning dislocation-based plasticity in crystalline materials. During this period, three-dimensional dislocation dynamics simulations appeared and reached maturity. Their objectives are to unravel the relation between individual and collective dislocation processes at the mesoscale, to establish connections with atom-scale studies of dislocation core properties and to bridge, in combination with modelling, the gap between defect properties and phenomenological continuum models for plastic flow. Dislocation dynamics simulations are becoming accessible to a wide range of users. This book presents to students and researchers in materials science and mechanical engineering a comprehensive coverage of the physical body of knowledge on which they are based. It includes classical studies, which are too often ignored, recent experimental and theoretical advances, as well as a discussion of selected applications on various topics.
Dislocations, Mesoscale Simulations and Plastic Flow
Title | Dislocations, Mesoscale Simulations and Plastic Flow PDF eBook |
Author | L. Kubin |
Publisher | Oxford University Press (UK) |
Pages | 320 |
Release | 2013-04-18 |
Genre | Science |
ISBN | 019852501X |
In the past twenty years, new experimental approaches, improved models and progress in simulation techniques brought new insights into long-standing issues concerning dislocation-based plasticity in crystalline materials. Dislocation dynamics simulations are becoming accessible to a wide range of users. This book presents to students and researchers in materials science and mechanical engineering a comprehensive coverage of the physical body of knowledge on whichthey are based. This includes classical studies, which are too often ignored, recent experimental and theoretical advances, as well as a discussion of selected applications on various topics.
Dislocation Dynamics and Plasticity
Title | Dislocation Dynamics and Plasticity PDF eBook |
Author | Taira Suzuki |
Publisher | Springer Science & Business Media |
Pages | 237 |
Release | 2013-03-07 |
Genre | Science |
ISBN | 364275774X |
In the 1950s the direct observation of dislocations became possible, stimulat ing the interest of many research workers in the dynamics of dislocations. This led to major contributions to the understanding of the plasticity of various crys talline materials. During this time the study of metals and alloys of fcc and hcp structures developed remarkably. In particular, the discovery of the so-called in ertial effect caused by the electron and phonon frictional forces greatly influenced the quantitative understanding of the strength of these metallic materials. Statis tical studies of dislocations moving through random arrays of point obstacles played an important role in the above advances. These topics are described in Chaps. 2-4. Metals and alloys with bcc structure have large Peierls forces compared to those with fcc structure. The reasons for the delay in studying substances with bcc structure were mostly difficulties connected with the purification techniques and with microscopic studies of the dislocation core. In the 1970s, these difficulties were largely overcome by developments in experimental techniques and computer physics. Studies of dislocations in ionic and covalent bonding materials with large Peierls forces provided infonnation about the core structures of dislocations and their electronic interactions with charged particles. These are the main subjects in Chaps. 5-7.
A Dislocation-based Multiscale Modeling of Plasticity and Controlling Mechanisms
Title | A Dislocation-based Multiscale Modeling of Plasticity and Controlling Mechanisms PDF eBook |
Author | Nasrin Taheri-Nassaj |
Publisher | |
Pages | 163 |
Release | 2016 |
Genre | |
ISBN |
The objective of this research is to investigate the plastic deformation and its controlling mechanisms in order to model and predict the material microstructure either dislocation pileups as a feature of plasticity or spatio-temporal dislocations pattern as another feature of plastic deformation using a hierarchical multiscale modeling approach from discrete dislocation dynamic to continuum dislocation dynamics and continuum mechanics.
Dislocation Dynamics
Title | Dislocation Dynamics PDF eBook |
Author | Alan R. Rosenfield |
Publisher | |
Pages | 806 |
Release | 1968 |
Genre | Technology & Engineering |
ISBN |
Multiscale Materials Modeling for Nanomechanics
Title | Multiscale Materials Modeling for Nanomechanics PDF eBook |
Author | Christopher R. Weinberger |
Publisher | Springer |
Pages | 554 |
Release | 2016-08-30 |
Genre | Technology & Engineering |
ISBN | 3319334808 |
This book presents a unique combination of chapters that together provide a practical introduction to multiscale modeling applied to nanoscale materials mechanics. The goal of this book is to present a balanced treatment of both the theory of the methodology, as well as some practical aspects of conducting the simulations and models. The first half of the book covers some fundamental modeling and simulation techniques ranging from ab-inito methods to the continuum scale. Included in this set of methods are several different concurrent multiscale methods for bridging time and length scales applicable to mechanics at the nanoscale regime. The second half of the book presents a range of case studies from a varied selection of research groups focusing either on a the application of multiscale modeling to a specific nanomaterial, or novel analysis techniques aimed at exploring nanomechanics. Readers are also directed to helpful sites and other resources throughout the book where the simulation codes and methodologies discussed herein can be accessed. Emphasis on the practicality of the detailed techniques is especially felt in the latter half of the book, which is dedicated to specific examples to study nanomechanics and multiscale materials behavior. An instructive avenue for learning how to effectively apply these simulation tools to solve nanomechanics problems is to study previous endeavors. Therefore, each chapter is written by a unique team of experts who have used multiscale materials modeling to solve a practical nanomechanics problem. These chapters provide an extensive picture of the multiscale materials landscape from problem statement through the final results and outlook, providing readers with a roadmap for incorporating these techniques into their own research.
Atomistically-informed Discrete Dislocation Dynamics Modeling of Plastic Flow in Body-centered Cubic Metals
Title | Atomistically-informed Discrete Dislocation Dynamics Modeling of Plastic Flow in Body-centered Cubic Metals PDF eBook |
Author | Kinshuk Srivastava |
Publisher | |
Pages | |
Release | 2014 |
Genre | |
ISBN |