Granular Materials

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Mechanics Of Granular Materials An Introduction

Author : K. Iwashita
ISBN : 9781000150513
Genre : Technology & Engineering
File Size : 57.55 MB
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This textbook compiles reports written by about 35 internationally recognized authorities, and covers a range of interests for geotechnical engineers. Topics include: fundamentals for mechanics of granular materials; continuum theory of granular materials; and discrete element approaches.
Category: Technology & Engineering

Granular Materials

Author : S Joseph Antony
ISBN : 9781847550996
Genre : Technology & Engineering
File Size : 83.98 MB
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Granular materials play an important role in many industries. Continuous ingenuity and advancement in these industries necessitates the ability to predict the fundamental behaviour of granular materials under different working environments. With contributions from international experts in the field Granular Materials; Fundamentals and Applications details recent advances made in theoretical computational and experimental approaches in understanding the behaviour of granular materials including industrial applications. Topics covered include: * key features of granular plasticity * high temperature particle interactions * influence of polymers on particulate dispersion stability: scanning probe microscopy investigations * in-process measurement of particulate systems Presented by world renowned researchers this book will be welcomed by scientists and engineers working across a wide spectrum of engineering disciplines.
Category: Technology & Engineering

Materials Handling Research

Author : Richard S. Fowkes
ISBN : UOM:39015078520569
Genre : Materials handling
File Size : 58.30 MB
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Category: Materials handling

Behaviour Of Granular Materials

Author : Bernard Cambou
ISBN : 3211829202
Genre : Science
File Size : 25.9 MB
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This book presents a complete and comprehensive analysis of the behaviour of granular materials including the description of experimental results, the different ways to define the global behaviour from local phenomena at the particle scale, the various modellings which can be used for a D.E.M. analysis to solve practical problems and finally the analysis of strain localisation. The concepts developed in this book are applicable to many kinds of granular materials considered in civil, mechanical or chemical engineering.
Category: Science

Built On Sand

Author : Etienne Guyon
ISBN : 9780262357968
Genre : Technology & Engineering
File Size : 52.16 MB
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Explaining the science contained in a simple assembly of grains—the most abundant form of matter present on Earth. Granular media—composed of vast amounts of grains, consolidated or not—constitute the most abundant form of solid matter on Earth. Granular materials assemble in disordered configurations scientists often liken to a bag of marbles. Made of macroscopic particles rather than molecules, they defy the standard scheme of classification in terms of solid, liquid, and gas. Granular materials provide a model relevant to various domains of research, including engineering, physics, and biology. William Blake famously wished “To See a World in a Grain of Sand”; in this book, pioneering researchers in granular matter explain the science hidden behind simple grains, shedding light on collective behavior in disordered settings in general. The authors begin by describing the single grain with its different origins, shapes, and sizes, then examine grains in piled or stacked form. They explain the packing fraction of granular media, a crucial issue that bears on the properties displayed in practical applications; explore small-scale deformations in piles of disordered grains, with particular attention to friction; and present theories of various modes of disorder. Along the way, they discuss such concepts as force chains, arching effects, wet grains, sticky contacts, and inertial effects. Drawing on recent numerical simulations as well as classical concepts developed in physics and mechanics, the book offers an accessible introduction to a rapidly developing field.
Category: Technology & Engineering

Pattern Formation In Granular Materials

Author : Gerald H. Ristow
ISBN : 3540667016
Genre : Science
File Size : 20.40 MB
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Granular materials are an integral part of our everyday life. They are also the base material for most industrial processing techniques. The highly dissipative nature of the particle collisions means energy input is needed in order to mobilize the grains. This interplay of dissipation and excitation leads to a wide variety of pattern formation processes, which are addressed in this book. The reader is introduced to this wide field by, first, a description of the material properties of granular materials under different experimental conditions that are important in connection with the pattern formation dynamics and, second, by further details given later on in the description of the specific system.
Category: Science

Constitutive Modelling Of Granular Materials

Author : Dimitrios Kolymbas
ISBN : 3540669191
Genre : Mathematics
File Size : 76.98 MB
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In view of its extreme complexity the mathematical description of the mechanical behaviour of granular materials is an extremely difficult task. Today many different models compete with each other. However, the complexity of the models hinders their comparison, and the potential users are confused and, often, disencouraged. This book is expected to serve as a milestone in the present situation, to evaluate the present methodes, to clear up the situation, to focus and encourage for further research activities.
Category: Mathematics

Mathematics And Mechanics Of Granular Materials

Author : James M. Hill
ISBN : 9781402041839
Genre : Science
File Size : 46.79 MB
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Granular or particulate materials arise in almost every aspect of our lives, including many familiar materials such as tea, coffee, sugar, sand, cement and powders. At some stage almost every industrial process involves a particulate material, and it is usually the cause of the disruption to the smooth running of the process. In the natural environment, understanding the behaviour of particulate materials is vital in many geophysical processes such as earthquakes, landslides and avalanches. This book is a collection of current research from some of the major contributors in the topic of modelling the behaviour of granular materials. Papers from every area of current activity are included, such as theoretical, numerical, engineering and computational approaches. This book illustrates the numerous diverse approaches to one of the outstanding problems of modern continuum mechanics.
Category: Science

Rheometry Of Pastes Suspensions And Granular Materials

Author : Philippe Coussot
ISBN : 9780471720560
Genre : Technology & Engineering
File Size : 69.20 MB
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A comprehensive examination of rheometry theory and its practicalapplications This publication enables readers to understand and characterize theflow properties of complex fluids and, with this knowledge, developa wide range of industrial and consumer products. The author fillsa gap in the current literature by presenting a comprehensivedescription of the rheological behavior of pastes, suspensions, andgranular materials and by offering readers the rheometricaltechniques needed to effectively characterize thesematerials. With his extensive experience in both academic and industrialresearch, the author is able to take the field to a new levelin: * General schematic classification of the behavior ofpastes,suspensions, and granular materials * Systematic review, analysis, and quantification of experimentalproblems with complex fluids * Insight into the flow behavior of complex fluids gained throughthe most recent discoveries and research techniques * Comprehensive rheometrical analysis of data obtained fromresearch across a broad range of industries In addition to gaining a thorough understanding of the theoryunderlining rheometry, readers discover its many practicalapplications. Throughout the publication, specific examples areprovided that illustrate how theory is applied, including examplesinvolving food, civil engineering, cosmetics, pharmaceuticals,paper coatings, paint and ink, ceramics, sewage sludges, granularmaterials, and natural materials. In summary, this publication provides a comprehensive review of thebehavior of pastes, suspensions, and granular materials as well asdetailed analysis of rheometrical techniques. Everything needed todetermine the behavior and movement of complex fluids is provided.It is, therefore, a recommended resource for rheologists,engineers, and researchers, as well as students who deal withcomplex fluids in product formulation, quality and process control,and process plant design.
Category: Technology & Engineering

Mechanics Of Granular Materials

Author : James T. Jenkins
ISBN : 9781483289816
Genre : Technology & Engineering
File Size : 90.19 MB
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Studies in Applied Mechanics, Volume 7: Mechanics of Granular Materials: New Models and Constitutive Relations provides information pertinent to the fundamental aspects of the mechanics of granular materials. This book presents the theoretical and experimental studies of quasi-static deformations of granular materials. Organized into 30 chapters, this volume begins with an overview of the results on the description of a macroscopic stress measure and measures of the fabric of granular masses that support external loads through frictional contact. This text then introduces some quantities for the macroscopic description of mechanical and graphical characteristics of granular materials. Other chapters consider particle rolling, which appears to be a major microscopic deformation mechanism when interparticle friction is large. This book discusses as well the stress-induced anisotropy of granular materials that have initially strong anisotropic fabric. The final chapter deals with the interpretation of linear instabilities of voidage disturbances in fluidized beds. This book is a valuable resource for scientists, theoreticians, and experimentalists.
Category: Technology & Engineering

Micromechanics Of Granular Materials

Author : Massao Satake
ISBN : 9781483290157
Genre : Technology & Engineering
File Size : 53.46 MB
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This proceedings volume contains papers from researchers in Japan, the United States and England who have made fundamental contributions to the micromechanics of granular materials. The purpose of the seminar was to facilitate an exchange of ideas between scientists working with statistical and continuum theories, computer simulations and experiments on both static and dynamic behaviour. In describing the solid like behaviour of granular materials, many new ideas on the constitutive relations are introduced in this volume. As an application of the analysis, the mechanism of liquefaction is discussed. Computer simulations have become a vital tool in establishing the micromechanical approaches which otherwise would not be experimentally tested. In numerical simulations and theoretical analyses of rapid granular flow, various modifications on the nature of materials and boundaries are given. Possible applications of the techniques of the stereology and analysis based on geometrical statistics are also included. The papers collected in this volume signify that the promotion of a good understanding of the mechanics of granular materials has been and will continue to be valued in a variety of technical disciplines.
Category: Technology & Engineering

Micromechanics Of Granular Materials

Author : Bernard Cambou
ISBN : 9781118623084
Genre : Science
File Size : 79.91 MB
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Nearly all solids are compised of grains. However most studies treat materials as a continious solid. The book applies analysis used on loose granular materials to dense grainular materials. This title’s main focus is devoted to static or dynamic loadings applied to dense materials, although rapid flows and widely dispersed media are also mentioned briefly. Three essential areas are covered: Local variable analysis: Contact forces, displacements and rotations, orientation of contacting particles and fabric tensors are all examples of local variables. Their statistical distributions, such as spatial distribution and possible localization, are analyzed, taking into account experimental results or numerical simulations. Change of scales procedures: Also known as “homogenization techniques”, these procedures make it possible to construct continuum laws to be used in a continuum mechanics approach or performing smaller scale analyses. Numerical modeling: Several methods designed to calculate approximate solutions of dynamical equations together with unilateral contact and frictional laws are presented, including molecular dynamics, the distinct element method and non-smooth contact dynamics. Numerical examples are given and the quality of numerical approximations is discussed.
Category: Science

Advances In Micromechanics Of Granular Materials

Author : H.H. Shen
ISBN : 9781483291284
Genre : Technology & Engineering
File Size : 60.12 MB
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The 45 papers presented in this volume all share the common goal of constructing continuum models based on the micro behaviours of granular materials. Computer simulations continue to provide observations to aid modelling, while new experimental works begin to show promise for increased understanding in this area. Theoretical studies have extended into transitions between the rapid and quasi-static regimes and the fluid and solid mixture flows. Exciting new topics discussed in this volume include: concepts of a measure for randomness in quasi-static granular materials, which is analogous to the granular temperature in a rapid flow; scaling effects in granular media and their implications in both physical and computer simulations; instability; and boundary effects on heterogeneous behavior in simple flow configurations, which are posing new challenges for mathematical modelling. The volume will prove indispensable reading for researchers interested in the current developments in the fundamental aspects of mechanics of granular materials.
Category: Technology & Engineering

Statics And Kinematics Of Granular Materials

Author : R. M. Nedderman
ISBN : 0521019079
Genre : Science
File Size : 60.33 MB
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This book outlines the basic science underlying the prediction of stress and velocity distributions in granular materials. The nature of a rigid-plastic material is discussed and a comparison is made between the Coulomb and conical (extended Von Mises) models. The methods of measuring material properties are described and an interpretation of the experimental results is considered in the context of the Critical State Theory. Exercises and solutions are provided that will be particularly useful for the reader.
Category: Science

Mathematical Modeling In Mechanics Of Granular Materials

Author : Oxana Sadovskaya
ISBN : 9783642290534
Genre : Technology & Engineering
File Size : 69.40 MB
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This monograph contains original results in the field of mathematical and numerical modeling of mechanical behavior of granular materials and materials with different strengths. It proposes new models helping to define zones of the strain localization. The book shows how to analyze processes of the propagation of elastic and elastic-plastic waves in loosened materials, and constructs models of mixed type, describing the flow of granular materials in the presence of quasi-static deformation zones. In a last part, the book studies a numerical realization of the models on multiprocessor computer systems. The book is intended for scientific researchers, lecturers of universities, post-graduates and senior students, who specialize in the field of the deformable materials mechanics, mathematical modeling and adjacent fields of applied and calculus mathematics.
Category: Technology & Engineering

Granular Materials Under Shock And Blast Loading

Author : Padmanabha Vivek
ISBN : 9789811504389
Genre : Technology & Engineering
File Size : 25.64 MB
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This volume discusses the fundamental dynamic behaviour of granular materials, in particular cohesionless sand, when subjected to shock and blast wave loading. The contents of the book are mainly divided into three parts based on the type of loading imparted to the granular materials: Shock-wave loading (step pulse); Air-blast loading (Friedlander wave); Buried-blast loading. It provides a comprehensive review of the available testing methods, along with the necessary diagnostic measurements for material characterization, making it useful for researchers working in the area of blast protection and Impact engineering.
Category: Technology & Engineering

Handbook Of Granular Materials

Author : Scott V. Franklin
ISBN : 1466509961
Genre : Science
File Size : 86.65 MB
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This book addresses the fundamental theory, computational approaches, and experimental findings of the field of granular materials, which is important for applications as diverse as energy, agriculture, pharmaceuticals, and engineering. The contents are given thematic consistency through the use of interpretive frameworks. Both basic concepts and state-of-the-art research areas, such as shear flow, jamming, packing, granular gases, multiphase flows, and fluid/particle interactions, are covered. Chapters provide a broad-based description of the overall question and then discuss the strengths and limitations of various approaches.
Category: Science

Micromechanics Of Granular Materials

Author : Masao Satake
ISBN : 0444705236
Genre : Technology & Engineering
File Size : 48.15 MB
Format : PDF, ePub, Docs
Download : 921
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This proceedings volume contains papers from researchers in Japan, the United States and England who have made fundamental contributions to the micromechanics of granular materials. The purpose of the seminar was to facilitate an exchange of ideas between scientists working with statistical and continuum theories, computer simulations and experiments on both static and dynamic behaviour. In describing the solid like behaviour of granular materials, many new ideas on the constitutive relations are introduced in this volume. As an application of the analysis, the mechanism of liquefaction is discussed. Computer simulations have become a vital tool in establishing the micromechanical approaches which otherwise would not be experimentally tested. In numerical simulations and theoretical analyses of rapid granular flow, various modifications on the nature of materials and boundaries are given. Possible applications of the techniques of the stereology and analysis based on geometrical statistics are also included. The papers collected in this volume signify that the promotion of a good understanding of the mechanics of granular materials has been and will continue to be valued in a variety of technical disciplines.
Category: Technology & Engineering