Failure, Degradation and Instabilities in Geomaterials PDF Download
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Author: Félix Darve
Publisher:
ISBN: 9782746210189
Category :
Languages : fr
Pages : 759
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Book Description
Author: Félix Darve
Publisher:
ISBN: 9782746210189
Category :
Languages : fr
Pages : 759
Get Book Here
Book Description
Author: Félix Darve
Publisher: Springer
ISBN: 3709127688
Category : Technology & Engineering
Languages : en
Pages : 370
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Book Description
This book presents the most recents developments in the modelling of degradations (of thermo-chemo-mechanical origin) and of bifurcations and instabilities (leading to localized or diffuse failure modes) taking place in geomaterials (soils, rocks, concrete). Applications (landslides, rockfalls, debris flows, concrete and rock ageing, etc.) are discussed in detail.
Author: Ioannis Stefanou
Publisher: John Wiley & Sons
ISBN: 1789450004
Category : Technology & Engineering
Languages : en
Pages : 370
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Book Description
Instabilities Modeling in Geomechanics describes complex mechanisms which are frequently met in earthquake nucleation, geothermal energy production, nuclear waste disposal and CO2 sequestration. These mechanisms involve systems of non-linear differential equations that express the evolution of the geosystem (e.g. strain localization, temperature runaway, pore pressure build-up, etc.) at different length and time scales. In order to study the evolution of a system and possible instabilities, it is essential to know the mathematical properties of the governing equations. Therefore, questions of the existence, uniqueness and stability of solutions naturally arise. This book particularly explores bifurcation theory and stability analysis, which are robust and rigorous mathematical tools that allow us to study the behavior of complex geosystems, without even explicitly solving the governing equations. The contents are organized into 10 chapters which illustrate the application of these methods in various fields of geomechanics.
Author: Richard Wan
Publisher: Springer Science & Business Media
ISBN: 3642182844
Category : Science
Languages : en
Pages : 366
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Book Description
Geomaterials exhibit complex but rich mechanical behaviour with a variety of failure modes ranging from diffuse to localized deformation depending on stress, density, microstructure, and loading conditions. These failure modes are a result of an instability of material and/or geometric nature that can be studied within the framework of bifurcation theory. Degradation is another related phenomenon arising from cyclic loading, ageing, weathering, chemical attack, and capillary effects, among others. The methodology of analyzing the various types of instabilities is crucial in the adequate modelling and safe design of numerous problems in geomechanics. The present volume contains a sampling of enlarged versions of papers presented at the International Workshop on Bifurcation and Degradations in Geomaterials (IWBDG 2008) held in Lake Louise, Alberta, Canada, May 28-31, 2008. These papers capture the state-of-the-art in the specialized field of geomechanics and contemporary approaches to solving the central issue of failure. Some engineering applications are presented in the areas of energy resource extraction and soil-machine interaction.
Author: Stéphane Bonelli
Publisher: Springer Science & Business Media
ISBN: 9400714211
Category : Science
Languages : en
Pages : 352
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Book Description
This book presents contributions to the 9th International Workshop on Bifurcation and Degradation in Geomaterials held in Porquerolles, France, May 23-26, 2011. This series of conferences, started in the early 1980s, is dedicated to the research on degradation and instability phenomena in geomaterials. The volume gathers a series of manuscripts by brilliant international scholars reflecting recent trends in theoretical and experimental research in geomechanics. It incorporates contributions on topics like instability analysis, localized and diffuse failure description, multi-scale modeling and applications to geo-environmental issues. This book will be valuable for anyone interested in the research on degradation and instabilities in geomechanics and geotechnical engineering, appealing to graduate students, researchers and engineers alike.
Author: Richard Wan
Publisher: Elsevier
ISBN: 0081010567
Category : Technology & Engineering
Languages : en
Pages : 224
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Book Description
Failure in Geomaterials offers a unified view of material failure as an instability of deformation modes framed within the theory of bifurcation. Using mathematical rigor, logic, physical reasoning and basic principles of mechanics, the authors develop the fundamentals of failure in geomaterials based on the second-order work criterion. Various forms of rupture modes and material instabilities in granular materials are explored both analytically and numerically with lab experimental observations on sand as a backdrop. The authors provide a clear picture of inelastic deformations and failure of geomaterials under various loading conditions. A unique feature of the book is the systematic application of the developed theory to the failure analysis of some selected engineering problems such as soil nailing, landslides, energy resource extraction, and internal erosion in soils. - Provides the fundamentals of the mechanics of geomaterials for a detailed background on the subject - Integrates a rigorous mathematical description of failure with mechanisms based on microstructure - Helps users apply mathematical models of solid mechanics to engineering practice - Contains a systematic development of the fundamentals of failure in heterogeneous multiphasic materials
Author: Elena Pasternak
Publisher: Springer Nature
ISBN: 303122213X
Category : Science
Languages : en
Pages : 266
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Book Description
· Proceedings of 12th International Workshop on Bifurcation and Degradation in Geomechanics (IWBDG2022) held on 28 November - 1 December 2022 at the University of Western Australia, in Perth, Australia. The book concentrates on deep understanding of the processes of bifurcation and instability in geoengineering systems. The book covers multiscale processes from the scale of crystals to rocks to rock masses. The book considers a wide range of accompanying phenomena from liquefaction to seismicity and landslides. · Topics covered are: I. Localisation and instability in geomaterials II. Fracturing, failure and seismicity III. Deformation processes Intended readership: Universities and Consulting and Research organisations, research students, academics and engineers working in the fields of geomechanics, rock mechanics and geotechnical engineering.
Author: Stavros K. Kourkoulis
Publisher: Springer Science & Business Media
ISBN: 1402050771
Category : Technology & Engineering
Languages : en
Pages : 582
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Book Description
In this volume scientists from different disciplines present their experience and their scientific work in progress. These concern the properties of a series of stones that have been used for the erection of some of the most important stone monuments of international cultural heritage and are also used today for substitution of missing parts or completion of damaged ones. It deals with the subject globally and contains unpublished research results.
Author: Jacek Tejchman
Publisher: Springer Science & Business Media
ISBN: 3642284639
Category : Technology & Engineering
Languages : en
Pages : 417
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Book Description
The book analyzes a quasi-static fracture process in concrete and reinforced concrete by means of constitutive models formulated within continuum mechanics. A continuous and discontinuous modelling approach was used. Using a continuous approach, numerical analyses were performed using a finite element method and four different enhanced continuum models: isotropic elasto-plastic, isotropic damage and anisotropic smeared crack one. The models were equipped with a characteristic length of micro-structure by means of a non-local and a second-gradient theory. So they could properly describe the formation of localized zones with a certain thickness and spacing and a related deterministic size effect. Using a discontinuous FE approach, numerical results of cracks using a cohesive crack model and XFEM were presented which were also properly regularized. Finite element analyses were performed with concrete elements under monotonic uniaxial compression, uniaxial tension, bending and shear-extension. Concrete beams under cyclic loading were also simulated using a coupled elasto-plastic-damage approach. Numerical simulations were performed at macro- and meso-level of concrete. A stochastic and deterministic size effect was carefully investigated. In the case of reinforced concrete specimens, FE calculations were carried out with bars, slender and short beams, columns, corbels and tanks. Tensile and shear failure mechanisms were studied. Numerical results were compared with results from corresponding own and known in the scientific literature laboratory and full-scale tests.
Author: Jacek Tejchman
Publisher: Springer Science & Business Media
ISBN: 3319003186
Category : Science
Languages : en
Pages : 503
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Book Description
During confined flow of bulk solids in silos some characteristic phenomena can be created, such as: sudden and significant increase of wall stresses, different flow patterns, formation and propagation of wall and interior shear zones, fluctuation of pressures and, strong autogenous dynamic effects. These phenomena have not been described or explained in detail yet. The main intention of the experimental and theoretical research presented in this book is to explain the above mentioned phenomena in granular bulk solids and to describe them with numerical FE models verified by experimental results.
