| Description |
1 online resource |
| Series |
Civil engineering and geomechanics |
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Civil engineering and geomechanics
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| Contents |
880-01 9 State of the Art on the Likelihood of Internal Erosion of Dams and Levees by Means of Testing / Luc Sibille -- 9.1. Introduction -- 9.2. Experimental findings on interface erosion -- 9.2.1. Introduction -- 9.2.2. Comparative analysis of interface erosion tests -- 9.2.3. Interpretation by energy method -- 9.2.4. Statistical analysis -- 9.3. Experimental findings on suffusion -- 9.3.1. mechanics-based understanding of suffusion -- 9.3.2. General principle of laboratory suffusion test apparatus -- 9.3.3. Parametric studies -- 9.3.4. Characterizing suffusion susceptibility -- 9.4. description of internal erosion based on flow power -- 9.4.1. Detachment of solid particles / initiation of erosion -- 9.4.2. Description of internal erosion including a filtration step -- 9.5. Numerical approaches to describing internal erosion effects in soils -- 9.5.1. DEM approach -- 9.5.2. Micromechanical approach -- 9.5.3. Comparison between numerical results from DEM and micromechanical model -- 9.5.4. Conclusion -- 9.6. General conclusion -- 9.7. Bibliography -- ch. 10 Mechanical Stability of River Banks Submitted to Fluctuations of the Water Level / Soksan Chun -- 10.1. Introduction -- 10.2. Background and general methods of analysis -- 10.2.1. Flow regimes and fluvial morphology -- 10.2.2. Seepage analysis -- 10.2.3. Stability analysis -- 10.3. built-in model for bank stability analysis -- 10.3.1. Groundwater seepage model -- 10.3.2. Erosion model -- 10.3.3. Mass stability model -- 10.3.4. Validation of MEStab code by comparison to finite element results -- 10.3.5. Coupling erosion with seepage and mass slide -- 10.4. Application to the Lower Mekong Basin -- 10.4.1. Seasonal River Flow Regime -- 10.4.2. Observed changes in the Mekong River morphology -- 10.4.3. Case study of the stability of a river bank at Kampong Cham -- 10.5. Conclusions and perspectives -- 10.6. Bibliography |
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880-01/(S Machine generated contents note: ch. 1 Multi-Scale and Multi-Physics Modeling of the Contact Interface Using DEM and Coupled DEM-FEM Approach / Jerome Fortin -- 1.1. Introduction -- 1.2. Modeling of mutlicontact systems using DEM for electrical transfer applications -- 1.2.1. Diagnosis of defects in ball bearings -- 1.2.2. Monitoring of the ring/wire contact interface in wind plants -- 1.3. DEM for modeling continuous media -- 1.3.1. Effective mechanical properties of heterogeneous materials: application to composite materials -- 1.3.2. Thermal transfer by conduction in continuous materials: application to contact interfaces -- 1.4. DEM-FEM-based approach for multi-scale and multi-physics modeling -- 1.4.1. Thermomechanical multi-scale modeling -- 1.4.2. Thermomechanical resolution in multicontact interface -- 1.5. Conclusion -- 1.6. Acknowledgments -- 1.7. Bibliography -- ch. 2 Adsorption-induced Instantaneous Deformation in Double Porosity Media: Modeling and Experimental Validations / David Gregoire -- 2.1. Introduction -- 2.2. incremental poromechanical framework with varying porosity for single porosity media -- 2.2.1. Modeling procedure -- 2.2.2. Validation by experimental comparisons on a single porosity bituminous coal from the literature -- 2.3. Extension of the poromechanical framework to double porosity media -- 2.4. new experimental set-up allowing the simultaneous in situ measurements of both adsorption and swelling -- 2.4.1. Gas adsorption measurements -- 2.4.2. Swelling measurement by DIC -- 2.5. Validation of the extended poromechanical model by experimental comparisons on a double porosity synthetic activated carbon -- 2.6. Concluding remarks and perspectives -- 2.7. Acknowledgments -- 2.8. Bibliography -- ch. 3 Granular Materials: Mesoscale Structures and Modeling / Felix Darve -- 3.1. Introduction -- 3.2. Mesoscale as a basis for upscaling the mechanical behavior of granular materials -- 3.2.1. Numerical simulation of a 2D cyclic biaxial test -- 3.2.2. Mesoscale and mesovariables: definitions -- 3.2.3. Evolution of the mesostructure throughout loading and unloading -- 3.2.4. Analysis of mesostress and mesostrain of the different phases throughout loading and unloading stages -- 3.2.5. Relevance of the mesovariables and the chosen upscaling technique of the mechanical behavior -- 3.3. Multi-scale constitutive model including mesostructures -- 3.3.1. Brief review of the microdirectional model -- 3.3.2. Fabric evolution in the mesoscale -- 3.3.3. H-directional model -- 3.4. Conclusion -- 3.5. Bibliography -- ch. 4 Behavior of Granular Materials Affected by Grain Breakage / Pierre-Yves Hicher -- 4.1. Introduction -- 4.2. Size effects in rockfill materials -- 4.2.1. Micro and macro-scale effects -- 4.2.2. Theoretical developments -- 4.2.3. Experimental validation -- 4.3. Challenges in modeling rockfill behavior -- 4.3.1. Experimental investigation on critical state characteristics -- 4.3.2. Elasto-plastic models with an implicit description of GSD evolution -- 4.3.3. Explicit description of GSD evolution -- 4.4. Detrimental effect of humid conditions on grain breakage -- 4.5. Conclusion -- 4.6. Acknowledgements -- 4.7. Bibliography -- ch. 5 Multi-scale Modeling of the Mechanical Behaviour of Clays / Pierre-Yves Hicher -- 5.1. Introduction -- 5.2. Experimental investigation on clayey microstructure -- 5.3. Development of micromechanics-based model for clay -- 5.3.1. Density state of an aggregate assembly -- 5.3.2. Inter-aggregate behavior -- 5.3.3. Stress-strain relationship -- 5.3.4. Summary of parameters -- 5.3.5. Experimental verification -- 5.4. Mobilized three-dimensional strength criteria -- 5.5. Induced anisotropy effects obtained by the micromechanical model -- 5.5.1. Stress path dependent behavior -- 5.5.2. Rotational hardening of the yield surface -- 5.6. Inherent anisotropy in the micromechanical model -- 5.6.1. Formulation of general anisotropy -- 5.6.2. Inherent anisotropy of friction angle and stiffness -- 5.7. Cyclic loading effect by the micromechanical model -- 5.7.1. Stress reversal at contact level -- 5.7.2. Cyclic behavior under drained condition -- 5.7.3. Cyclic behavior under undrained condition -- 5.8. Comments on possible model extension -- 5.8.1. Model extension for sensitive clays -- 5.8.2. Simulations of triaxial tests on sensitive clay -- 5.9. Conclusion -- 5.10. Acknowledgements -- 5.11. Bibliography -- ch. 6 Modeling of Complex Microcracking in Quasi-Brittle Materials: Numerical Methods and Experimental Validations / Camille Chateau -- 6.1. Introduction -- 6.2. Experimental procedures -- 6.2.1. Description of the tested samples -- 6.2.2. Description of the in situ compressive test -- 6.2.3. XR-μCT imaging and DVC -- 6.2.4. Detection of damage from DVC-assisted image subtraction and image transformation -- 6.3. Numerical simulation methods -- 6.3.1. phase field method for voxel-based models -- 6.3.2. extension of the phase field method to interfacial damage -- 6.4. Validations of crack propagation -- 6.4.1. 2D validations -- 6.4.2. 3D validations -- 6.5. Conclusion -- 6.6. Bibliography -- ch. 7 Multi-Scale Methods for the Analysis of Creep-Damage Coupling in Concrete / Ahmed Loukili -- 7.1. Introduction -- 7.2. Experimental methods for the identification of creep-damage coupling in concrete -- 7.2.1. State-of-the-art of creep analysis of cementitious materials -- 7.2.2. Measurement of the residual strength of concrete after creep -- 7.2.3. AE monitoring of creep tests for concrete and mortar beams -- 7.2.4. Summary -- 7.3. Numerical methods for the analysis of damage during creep -- 7.3.1. State-of-the-art of the creep model ing of cement-based materials -- 7.3.2. Creep-damage modeling -- 7.3.3. predictive creep modeling -- 7.4. Conclusion -- 7.5. Bibliography -- ch. 8 Effect of Variability of Porous Media Properties on Drying Kinetics: Application to Cement-based Materials / Ameur Hamami -- 8.1. Introduction -- 8.2. Heterogeneous and variable nature of porous building materials -- 8.2.1. General definitions -- 8.3. Hygrothermal transfer properties in porous media: case of cement based materials -- 8.3.1. Porosity -- 8.3.2. Water Vapor Adsorption Desorption Isotherm -- 8.3.3. Water vapor permeability and moisture diffusion coefficient -- 8.3.4. Gas permeability -- 8.4. Most commonly used models for hygrothermal transfers -- 8.4.1. Philip and De Vries model (1957) -- 8.4.2. Luikov model (1966) -- 8.4.3. Other models -- 8.5. Variability effect of the moisture diffusion coefficient and the saturation water content on drying kinetics -- 8.5.1. Problematic -- 8.5.2. Pseudo random variability of the moisture diffusion coefficient -- 8.5.3. Variability of the saturation water content -- 8.6. Assessment and incidence of the spatial variability of the porous medium properties on the hygrothermal transfer at a wall scale -- 8.6.1. Assessment of the spatial variability: example of a concrete wall -- 8.6.2. Assessing the correlation length -- 8.6.3. Methodology on integration of the spatial variability properties in assessing the behavior of porous media -- 8.6.4. Application to hygrothermal transfer simulation at a wall scale (deterministic and probabilistic approach) -- 8.7. Conclusion -- 8.8. Bibliography -- ch |
| Summary |
Advances in Multi-Physics and Multi-Scale Couplings in Geo-Environmental Mechanics reunites some of the most recent work from the French research group MeGe GDR (National Research Group on Multiscale and Multiphysics Couplings in Geo-Environmental Mechanics) on the theme of multi-scale and multi-physics modeling of geomaterials, with a special focus on micromechanical aspects. Its offers readers a glimpse into the current state of scientific knowledge in the field, together with the most up-to-date tools and methods of analysis available. Each chapter represents a study with a different viewpoint, alternating between phenomenological/micro-mechanically enriched and purely micromechanical approaches. Throughout the book, contributing authors will highlight advances in geomaterials modeling, while also pointing out practical implications for engineers. Topics discussed include multi-scale modeling of cohesive-less geomaterials, including multi-physical processes, but also the effects of particle breakage, large deformations on the response of the material at the specimen scale and concrete materials, together with clays as cohesive geomaterials. The book concludes by looking at some engineering problems involving larger scales |
| Bibliography |
Includes bibliographical references and index |
| Notes |
Vendor-supplied metadata |
| Subject |
Environmental geotechnology.
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Multiscale modeling.
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Physics.
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Physics
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physics.
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TECHNOLOGY & ENGINEERING -- Environmental -- General.
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Environmental geotechnology
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Multiscale modeling
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Physics
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| Form |
Electronic book
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| Author |
Nicot, François, editor
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Millet, Olivier, editor
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| ISBN |
9780081025963 |
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0081025963 |
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