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Library | Item Barcode | Call Number | Material Type | Item Category 1 | Status |
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Searching... | 30000010038942 | TA418.78 M62 2002 | Open Access Book | Book | Searching... |
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Summary
Summary
Soils are complex materials: they have a particulate structure and fluids can seep through pores, mechanically interacting with the solid skeleton. Moreover, at a microscopic level, the behaviour of the solid skeleton is highly unstable. External loadings are in fact taken by grain chains which are continuously destroyed and rebuilt. Many issues of modeling, even of the physical details of the phenomena, remain open, even obscure; de Gennes listed them not long ago in a critical review. However, despite physical complexities, soil mechanics has developed on the assumption that a soil can be seen as a continuum, or better yet as a medium obtained by the superposition of two and sometimes three con and the other fluids, which occupy the same portion of tinua, one solid space. Furthermore, relatively simple and robust constitutive laws were adopted to describe the stress-strain behaviour and the interaction between the solid and the fluid continua. The contrast between the intrinsic nature of soil and the simplistic engi neering approach is self-evident. When trying to describe more and more sophisticated phenomena (static liquefaction, strain localisation, cyclic mo bility, effects of diagenesis and weathering, ..... ), the nalve description of soil must be abandoned or, at least, improved. Higher order continua, incrementally non-linear laws, micromechanical considerations must be taken into account. A new world was opened, where basic mathematical questions (such as the choice of the best tools to model phenomena and the proof of the well-posedness of the consequent problems) could be addressed.
Table of Contents
Preface |
Part I Mechanics of Porous Media |
Constitutive Equations and Instabilities of Granular MaterialsF. Darve and F. Laouafa |
Micromechanical Modeling of Granular MaterialsJ.T. Jenkins and L. La Ragione |
Thermodynamic Modeling of Granular Continua Exhibiting Quasi-Static Frictional Behaviour with AbrasionN.P. Kirchner and K. Hutter |
Modeling of Soil Behaviour: from Micro-Mechanical Analysis to Macroscopic DescriptionR. Nova |
Dynamic Thermo-Poro-Mechanical Stability Analysis of Simple Shear on Frictional MaterialsI. Vardoulakis |
Part II Flow and Transport Phenomena in Particulate Materials |
Mathematical Models for Soil Consolidation Problems: A State of the Art ReportD. Ambrosi and R. Lancellotta and L. Preziosi |
Flow of Water in Rigid and Non-Rigid, Saturated and Unsaturated SoilsP.A.C. Raats |
Mass Exchange, Diffusion and Large Deformations of Poroelastic MaterialsK. Wilmanski |
Part III Numerical Simulations |
Continuum and Numerical Simulation of Porous Materials in Science and TechnologyW. Ehlers |
A Mathematical and Numerical Model for Finite Elastoplastic Deformations in Fluid Saturated Porous MediaL. Sanavia and B.A. Schrefler and P. Steinmann |
Numerical Modeling of Initiation and Propagation Phases of LandslidesM. Pastor and M. Quecedo and P. Mira and J.A. Fernandez-Merodo and L. Tongchun and L. Xiaoqing |