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Author | : Colin Thornton |
Publisher | : Springer |
Total Pages | : 202 |
Release | : 2015-09-03 |
Genre | : Science |
ISBN | : 3319187112 |
Download Granular Dynamics, Contact Mechanics and Particle System Simulations Book in PDF, ePub and Kindle
This book is devoted to the Discrete Element Method (DEM) technique, a discontinuum modelling approach that takes into account the fact that granular materials are composed of discrete particles which interact with each other at the microscale level. This numerical simulation technique can be used both for dispersed systems in which the particle-particle interactions are collisional and compact systems of particles with multiple enduring contacts. The book provides an extensive and detailed explanation of the theoretical background of DEM. Contact mechanics theories for elastic, elastic-plastic, adhesive elastic and adhesive elastic-plastic particle-particle interactions are presented. Other contact force models are also discussed, including corrections to some of these models as described in the literature, and important areas of further research are identified. A key issue in DEM simulations is whether or not a code can reliably simulate the simplest of systems, namely the single particle oblique impact with a wall. This is discussed using the output obtained from the contact force models described earlier, which are compared for elastic and inelastic collisions. In addition, further insight is provided for the impact of adhesive particles. The author then moves on to provide the results of selected DEM applications to agglomerate impacts, fluidised beds and quasi-static deformation, demonstrating that the DEM technique can be used (i) to mimic experiments, (ii) explore parameter sweeps, including limiting values, or (iii) identify new, previously unknown, phenomena at the microscale. In the DEM applications the emphasis is on discovering new information that enhances our rational understanding of particle systems, which may be more significant than developing a new continuum model that encompasses all microstructural aspects, which would most likely prove too complicated for practical implementation. The book will be of interest to academic and industrial researchers working in particle technology/process engineering and geomechanics, both experimentalists and theoreticians.
Author | : Thorsten Pöschel |
Publisher | : Springer Science & Business Media |
Total Pages | : 324 |
Release | : 2005-11-04 |
Genre | : Science |
ISBN | : 354027720X |
Download Computational Granular Dynamics Book in PDF, ePub and Kindle
Computer simulations not only belong to the most important methods for the theoretical investigation of granular materials, but provide the tools that have enabled much of the expanding research by physicists and engineers. The present book is intended to serve as an introduction to the application of numerical methods to systems of granular particles. Accordingly emphasis is on a general understanding of the subject rather than on the presentation of latest advances in numerical algorithms. Although a basic knowledge of C++ is needed for the understanding of the numerical methods and algorithms in the book, it avoids usage of elegant but complicated algorithms to remain accessible for those who prefer to use a different programming language. While the book focuses more on models than on the physics of granular material, many applications to real systems are presented.
Author | : Aixiang Wu |
Publisher | : Springer Science & Business Media |
Total Pages | : 383 |
Release | : 2008-06-25 |
Genre | : Science |
ISBN | : 3540758224 |
Download Granular Dynamic Theory and Its Applications Book in PDF, ePub and Kindle
This volume introduces both theory and applications in detail. It includes differential dynamical models of granular shearing, dynamical strength characteristics and the excited response of granules subject to vibration. The book is a useful reference for both theoretical researchers and engineers in the fields of mining engineering and geotechnical engineering. Engineers in fields ranging from metallurgy to water conservancy and hydroelectricity will also benefit from the book.
Author | : Qicheng Sun |
Publisher | : WIT Press |
Total Pages | : 209 |
Release | : 2013 |
Genre | : Technology & Engineering |
ISBN | : 1845646444 |
Download Mechanics of Granular Matter Book in PDF, ePub and Kindle
Focussing on the basic mechanics and underlying physics of granular material, Mechanics of Granular Matter starts with an introduction to contact mechanics of individual particles before moving on to a discussion of the structure of force chain networks and the influence on bulk mechanical properties of granular solids and granular flows. Furthermore, a preliminary multi scale framework is proposed for the nonlinear mechanics and strain localization in granular materials.
Author | : Thorsten Pöschel |
Publisher | : Springer Science & Business Media |
Total Pages | : 394 |
Release | : 2003-10-16 |
Genre | : Science |
ISBN | : 9783540201106 |
Download Granular Gas Dynamics Book in PDF, ePub and Kindle
The contributions in this book address both the kinetic approach one using the Boltzmann equation for dissipative gases as well as the less established hydrodynamic description. The last part of the book is devoted to driven granular gases and their analogy with molecular fluids.
Author | : S.P. Pudasaini |
Publisher | : Springer Science & Business Media |
Total Pages | : 614 |
Release | : 2007-06-30 |
Genre | : Science |
ISBN | : 3540326871 |
Download Avalanche Dynamics Book in PDF, ePub and Kindle
Avalanches, mudflows and landslides are common and natural phenomena that occur in mountainous regions. With an emphasis on snow avalanches, this book provides a survey and discussion about the motion of avalanche-like flows from initiation to run out. An important aspect of this book is the formulation and investigation of a simple but appropriate continuum mechanical model for the realistic prediction of geophysical flows of granular material.
Author | : Anita Mehta |
Publisher | : Cambridge University Press |
Total Pages | : 336 |
Release | : 2007-06-28 |
Genre | : Science |
ISBN | : 9780521660785 |
Download Granular Physics Book in PDF, ePub and Kindle
2007 account of developments in granular physics for researchers in statistical and mathematical physics.
Author | : Shunying Ji |
Publisher | : Springer |
Total Pages | : 387 |
Release | : 2020-05-08 |
Genre | : Technology & Engineering |
ISBN | : 9789811533037 |
Download Computational Granular Mechanics and Its Engineering Applications Book in PDF, ePub and Kindle
This book systematically introduces readers to computational granular mechanics and its relative engineering applications. Part I describes the fundamentals, such as the generation of irregular particle shapes, contact models, macro-micro theory, DEM-FEM coupling, and solid-fluid coupling of granular materials. It also discusses the theory behind various numerical methods developed in recent years. Further, it provides the GPU-based parallel algorithm to guide the programming of DEM and examines commercial and open-source codes and software for the analysis of granular materials. Part II focuses on engineering applications, including the latest advances in sea-ice engineering, railway ballast dynamics, and lunar landers. It also presents a rational method of parameter calibration and thorough analyses of DEM simulations, which illustrate the capabilities of DEM. The computational mechanics method for granular materials can be applied widely in various engineering fields, such as rock and soil mechanics, ocean engineering and chemical process engineering.
Author | : Aibing Yu |
Publisher | : Springer |
Total Pages | : 500 |
Release | : 2018-03-15 |
Genre | : Science |
ISBN | : 9789812871398 |
Download Granular Dynamics Book in PDF, ePub and Kindle
The aim of this handbook is to provide a comprehensive summary of the field of Particle Science and Technology which includes most updated research findings and their applications in different industries. It is hoped that the consolidated knowledge described by this handbook will inspire more innovative ideas to bring the field forward. The size of the particles may range from nanometer scale, as in pigments or aerosols, to that of mined or quarried materials. The handbook will cover the topics ranging from the formation and synthesis, packing and flow, and application of these particles. Each part is explored in great details in different sections and chapters, it is written by a pool of international well known scholars, as well as industrial experts. The handbook fully reflects the state of the art in Particle Science and Technology
Author | : Igor Aranson |
Publisher | : OUP Oxford |
Total Pages | : 368 |
Release | : 2009-03-12 |
Genre | : Science |
ISBN | : 0191560006 |
Download Granular Patterns Book in PDF, ePub and Kindle
This book is a systematic introduction to a new and exciting field of patterns in granular matter. Granular materials are collections of discrete macroscopic solid grains with a typical size large enough that thermal fluctuations are negligible. Despite this seeming simplicity, properties of granular materials are different from conventional solids, liquids and gases due to the dissipative and highly nonlinear nature of forces among grains. The last decade has seen an explosion of interest to nonequilibrium phenomena in granular matter among physicists, both on the experimental and theoretical side. Among these phenomena, one of the most interesting is the ability of granular matter upon mechanical excitation to form highly ordered patterns such as ripples, avalanches, or bands of segregated materials. This book presents a comprehensive review of experiments and novel theoretical concepts needed to understand the mechanisms of pattern formation in granular materials. This book is written for experienced physicists interested in this new rapidly developing field, as well as young researchers and graduate students entering this field. We hope that both experimentalists and theorists already working in the field will find it useful.