Experimental and Analytical Investigations of Granular Materials

Experimental and Analytical Investigations of Granular Materials PDF Author: Hojin Ahn
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 292

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Experimental and Analytical Investigations of Granular Materials

Experimental and Analytical Investigations of Granular Materials PDF Author: Hojin Ahn
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 292

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Book Description


Experimental and Analytical Investigations of Granular-fluid Mixtures Down Inclines

Experimental and Analytical Investigations of Granular-fluid Mixtures Down Inclines PDF Author: Juan Antonio García Aragón
Publisher:
ISBN:
Category :
Languages : en
Pages : 312

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Book Description
"The results are compared with measurements from an experimental chute in which the inclination, the solids flow rate and fluid flow rate are all varied. The theory is found to give a good qualitative account of the observed behaviour. Finally an application of the model to the description of the mechanical behaviour of the Nevado del Ruiz 1985 debris flow is attempted." --

An Experimental and Analytical Study of Granular Materials

An Experimental and Analytical Study of Granular Materials PDF Author: Alison L. Stanley
Publisher:
ISBN:
Category : Granular materials
Languages : en
Pages : 522

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Behaviour of Granular Materials

Behaviour of Granular Materials PDF Author: Bernard Cambou
Publisher: Springer
ISBN: 370912526X
Category : Technology & Engineering
Languages : en
Pages : 403

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Book Description
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.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652

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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Dynamic Image Analysis of Granular Materials

Dynamic Image Analysis of Granular Materials PDF Author: Magued Iskander
Publisher: Springer
ISBN: 9783031475337
Category : Science
Languages : en
Pages : 0

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Book Description
This book explores the effectiveness of Dynamic Image Analysis (DIA) in granulometry studies of sand, and presents criteria for soil characterization using DIA, including test parameters, specimen size, efficacy in gap-graded soils, and its limitations. DIA is a modern experimental technique used to analyze and classify particulate materials based on their size, shape, and other morphological properties. This method employs a high-frame-rate camera to capture images of individual sand particles, which have been transported and separated using various techniques. DIA generates both particle size and shape information by analyzing thousands to millions of particles, providing a quantitative statistical description of grain size and shape distribution within the specimen. The manuscript also offers a comprehensive examination of 2D and 3D particle size and shape descriptors. It demonstrates that there is no correlation between size and shape parameters in many sands and that shape descriptors can be reduced to four independent parameters representing sand granulometry at different scales. Additionally, the use of DIA in exploring the depositional history of two complex calcareous sands is presented. The manuscript presents the properties of 30 representative sands, including size and shape parameters, and fits them to statistical distributions. The investigated soils encompass both natural and machine-sorted materials, particles with regular and irregular shapes, as well as siliceous and calcareous sands. Physical granulometry of sand particles is compared using 2D, 3D DIA, and micro-computed tomography (μCT). The work demonstrates that DIA offers significant advantages in terms of efficiency for 3D shape analysis while providing an adequate representation of particle sizes and shapes of most sands. Finally, the manuscript integrates classical geotechnical engineering with computer vision and artificial intelligence. Size and shape descriptors are utilized for sand classification through machine learning models. This work represents a crucial step toward the automatic machine classification of soils, potentially enabling on-site classification using smartphones equipped with high-resolution cameras.

An Experimental Analysis of Gravity-induced Flow of Granular Materials Through an Annular Orifice

An Experimental Analysis of Gravity-induced Flow of Granular Materials Through an Annular Orifice PDF Author: Vincent Eugene Sweat
Publisher:
ISBN:
Category :
Languages : en
Pages : 134

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Advances in Micromechanics of Granular Materials

Advances in Micromechanics of Granular Materials PDF Author: H.H. Shen
Publisher: Elsevier
ISBN: 1483291286
Category : Technology & Engineering
Languages : en
Pages : 476

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Book Description
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.

Numerical and Experimental Investigation Into the Behaviour of Granular Materials Under Generalised Stress States

Numerical and Experimental Investigation Into the Behaviour of Granular Materials Under Generalised Stress States PDF Author: Daniel Barreto Gonzalez
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Topics On The Nonlinear Dynamics And Acoustics Of Ordered Granular Media

Topics On The Nonlinear Dynamics And Acoustics Of Ordered Granular Media PDF Author: Yuli Starosvetsky
Publisher: World Scientific
ISBN: 981322195X
Category : Science
Languages : en
Pages : 640

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Book Description
This research monograph provides a brief overview of the authors' research in the area of ordered granular media over the last decade. The exposition covers one-dimensional homogeneous and dimer chains in great detail incorporating novel analytical tools and experimental results supporting the analytical and numerical studies. The proposed analytical tools have since been successfully implemented in studying two-dimensional dimers, granular dimers on on-site perturbations, solitary waves in Toda lattices to name a few. The second part of the monograph dwells on weakly coupled homogeneous granular chains from analytical, numerical and experimental perspective exploring the interesting phenomenon of Landau-Zener tunneling in granular media. The final part of the monograph provides a brief introduction to locally resonant acoustic metamaterials incorporating internal rotators and the resulting energy channeling mechanism in unit-cells and in one- and two-dimensional lattices. The monograph provides a comprehensive overview of the research in this interesting domain. However, this exposition is not all exhaustive with regard to equally exciting research by other researchers across the globe, but we provide an exhaustive list of references for the interested readers to further explore in this direction.