Download or read book The Role of Particle Shape in Granular Rheology and Jamming written by Theodore A. Marschall and published by . This book was released on 2020 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Granular materials, non-Brownian suspension, emulsions, and foams are a class of 'soft matter' systems where the dominant interaction between particles arises from direct contact and the particles are sufficiently macroscopic so that thermal fluctuations can be ignored. All of these systems undergo a similar transition from a flowing phase to a disordered solid phase known as the jamming transition, which has been found to share many characteristics with phase transitions in thermalized systems. Most work on granular media has focused on the idealized case of spherical particles. This work focuses on systems with elongated convex grains and several nonconvex grain shapes in two dimensions, using a simple model of frictionless particles in a viscous background medium. These systems are compressed isotropically and sheared continuously over a wide range of densities and strain rates, with a particular focus on the rotational degrees of freedom of anisotropic particles. We find that the jamming transition in systems with anisotropic particles is broadly similar to that of circular disks, though in several ways the limit of circular disks is singular. We identify a nonuniform distribution of contacts on the surfaces of anisotropic particles, both when compressed and sheared, with a peak that diverges in the circular limit. We find that systems of convex particles are hypostatic at jamming, having fewer constraints from contacts than internal degrees of freedom. This leads to modes of motion with zero cost to energy at jamming, but only for small displacements, so that the system remains rigid against macroscopic perturbations. In particular, we identify sliding modes for particles which have flat regions on their surfaces. When sheared, anisotropic particles develop orientational ordering, which usually depends non-monotonically on the packing density. In the limit approaching circular disks, the ordering jumps discontinuously at the jamming transition. We explain the ordering with a mean-field model of particle rotation, finding that it results from the shearing acting as an ordering field combined with local interactions between particles. Finally, we find similar orientational ordering in sheared systems of nonconvex particles, which is modified by the more complex local structures of such particles"--Pages x-xi.
Download or read book The Effect of Particle Shape on the Properties of Granular Materials written by Janet Barbara Scotton and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behaviour of Granular Materials written by Bernard Cambou and published by Springer. This book was released on 2014-05-04 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Jamming and Rheology written by Andrea J. Liu and published by CRC Press. This book was released on 2001-02-22 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of jamming and rheology is a broad and interdisciplinary one that is generating increasing interest. This book deals with one of the oldest unsolved problems in condensed matter physics - that of the nature of glass transition in supercooled liquids. Jamming and Rheology is a collection of reprinted articles from several fields, ran
Download or read book The Effect of Particle Shape on Granular Stress written by Benjamin James and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Particle Shape on the Mechanical Behavior of Granular Materials A Discrete Element Study written by and published by . This book was released on 1995 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: An existing two dimensional Discrete Element numerical model which incorporates elliptical particles is used to simulate the biaxial shear of particulate systems. Comparisons are made with physical tests on circular and oval shaped rod systems. Good quantitative agreement was found with the circular rod data, but significantly weaker and softer response was found compared with the oval rod data. This discrepancy is attributed to differences in particle shape in the physical and numerical tests. Additional simulations were conducted using bedded, strongly anisotropic systems at varying degrees of particle flatness. These exhibit distinctly different stress strain and strength behavior, as well as different controlling mechanisms, as function of particle flatness and bedding plane orientation. Shear bands were observed in some flatness and bedding combinations. Interparticle interlocking, dilatancy and inhibition of particle rolling were all observed. Samples with bedding normal to the principal stress direction exhibited the highest shear resistance, as well as largest dilatancy. In systems composed of flat particles with bedding parallel to one of the planes of maximum obliquity, shear bands sometimes formed in the maximum obliquity plane opposite to the bedding plane.
Download or read book The Effect of Particle Shape and Size Distribution Upon Flow Through Granular Media written by R. J. Preston and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Particle Shape on the Structure and Rheology of Colloidal Suspensions and Gels written by Ali Mohraz and published by . This book was released on 2004 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 6th International Conference on Advances in Civil Engineering written by Scott Arthur and published by Springer Nature. This book was released on 2024-01-11 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book consists of select proceedings of the 6th International Conference on Advances in Civil Engineering (ICACE 2022), covering various fields of civil engineering. Various topics covered in this book are construction and building materials, eco-friendly ground improvement, waste disposal technique, waste management, the durability of different concrete structures, environmental impact studies in relation to covid-19 pandemic, various aspects of foundation engineering, transport planning scenario in developing countries, highway materials and many more. The book will be for researchers and professionals working in the area of civil engineering.
Download or read book Mechanics of Granular Matter written by Qicheng Sun and published by WIT Press. This book was released on 2013 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book A Numerical Investigation of the Effect of Particle Shape on the Strength of Coarse Granular Materials written by Matthew J. Potticary and published by . This book was released on 2018 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Granularity in Materials Science written by George Kyzas and published by BoD – Books on Demand. This book was released on 2018-10-24 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Granular materials are a special topic of recent research and are a milestone of science and technology. These materials are very simple: they are large conglomerations of discrete macroscopic particles. Granular materials have a broad area of development, which is growing rapidly day by day. Their impact on commercial applications and academia and education is huge. The basic points of this book are the important applications and properties of granular materials. For example, special mention is made of rheological points, shapes, and civil engineering aspects.
Download or read book Mechanics of Granular Media written by Aleksandr F. Revuzhenko and published by Springer Science & Business Media. This book was released on 2007-01-19 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph covers phenomena of deformation and machining of granular media: macroscopic particles of different size, shape, and surface properties which typically exhibit behavior similar to fluids, as well as the behavior of solids under deformation. The book analyses the behavior of granular media in soils, rocks and stones, metals and various synthetic materials, presenting a theoretical description, applications and understanding of basic phenomena in granular matter.
Download or read book The Effect of Particle Shape and Size distribution Upon Flow Through Granular Media written by Roger James Preston and published by . This book was released on 1974 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: PARTICLE SIZE, PARTICLE SHAPE, FLOW VELOCITY, FLUID FLOW, POWDERS, POROSITY, PACKED BEDS, PIPES, PARTICLE DENSITY, PARTICLE MIGRATION.
Download or read book Influence of Particle Shape on the Mechanical Behavior of Granular Materials written by Larry R. Meachum and published by . This book was released on 1994 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Particle Shape and Particle Damage on Stress Wave Propagation in Granular Media written by Raman P. Singh and published by . This book was released on 1992 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory and Applications of Colloidal Suspension Rheology written by Norman J. Wagner and published by Cambridge University Press. This book was released on 2021-04-15 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential text on the practical application and theory of colloidal suspension rheology, written by an international coalition of experts.
