Advances in Bifurcation and Degradation in Geomaterials: Proceedings of the 9th International Workshop on Bifurcation and Degradation in Geomaterials

Front Matter....Pages i-xvii
Instability and Bifurcation for Inelastic Geomaterials....Pages 1-7
Front Matter....Pages 9-9
Deciphering D’Alemberts Dream: New Tools for Uncovering Rules for Self-Organized Pattern Formation in Geomaterials....Pages 11-20
Microscopic Origins of Shear Strength in Packings Composed of Elongated Particles....Pages 21-27
Multi-scale Analysis of Instability in Sand....Pages 29-35
Observation of Microstructural Changes and Strain Localization of Unsaturated Sands Using Microfocus X-ray CT....Pages 37-43
Signature of Anisotropy in Liquefiable Sand Under Undrained Shear....Pages 45-51
Friction and Localization Associated with Non-spherical Particles....Pages 53-58
Length Scales for Nonaffine Deformation in Localized, Granular Shear....Pages 59-65
Discovering Community Structures and Dynamical Networks from Grain-Scale Kinematics of Shear Bands in Sand....Pages 67-73
Slip and Dislocation in Crystalline Solids as Precursors to Localized Deformation....Pages 75-81
Front Matter....Pages 83-83
A Chemo-Thermo-Mechanically Coupled Behavior During Gas Hydrate Dissociation and Its Numerical Analysis....Pages 85-91
Stability of Nail Reinforced Boreholes....Pages 93-99
Stability Analysis of Creeping Faults: The Role of Chemical Decomposition of Minerals....Pages 101-107
Onset of Immersed Granular Avalanches by DEM-LBM Approach....Pages 109-115
Multi-scale Periodic Homogenization of Ionic Transfer in Cementitious Materials....Pages 117-123
Chimney of Fluidization and “Sandboil” in a Granular Soil....Pages 125-129
Experimental Study of Contact Erosion at a Granular Interface....Pages 131-136
Numerical Modeling of Hydrofracturing Using the Damage Theory....Pages 137-143
Polydisperse Segregation Down Inclines: Towards Degradation Models of Granular Avalanches....Pages 145-151
Numerical Modelling of Interaction Between Snow Avalanche and Protective Structures....Pages 153-158
Front Matter....Pages 83-83
Crack Propagations on the Rock Face at Glacier Point of the Yosemite National Park After the 1999 Rockfall....Pages 159-164
Soil – Machine Interaction: Simulation and Testing....Pages 165-176
Front Matter....Pages 177-177
Multiscale Semi-Lagrangian Reproducing Kernel Particle Method for Modeling Damage Evolution in Geomaterials....Pages 179-184
Tunnel Excavation Modeling with Micromechanical Approaches....Pages 185-191
Coupling Discrete Elements and Micropolar Continuum Through an Overlapping Region in One Dimension....Pages 193-199
On the Numerical Implementation of a Multi-Mechanism Cyclic Plasticity Model Associated to a Dilation Second Gradient Model Aiming Strain Localization Mitigation....Pages 201-208
2D and 3D Modelling of Geomaterials Using a Second Gradient Dilation Model....Pages 209-218
Local Second Gradient Models for Thermo-Hydro-Mechanical Coupling in Rock Like Materials....Pages 219-226
Two Scale Model (FEM-DEM) For Granular Media....Pages 227-234
Finite Element Modelling of Material Instability via an Enriched Elastoplastic Model....Pages 235-241
Comprehensive DEM Study of the Effects of Rolling Resistance On Strain Localization in Granular Materials....Pages 243-248
Modeling Porous Granular Aggregates....Pages 249-254
Comparative Modelling of Shear Zone Patterns in Granular Bodies with Finite and Discrete Element Model....Pages 255-260
Influence of Weak Layer Heterogeneity on Slab Avalanche Release Using a Finite Element Method....Pages 261-266
Front Matter....Pages 267-267
Coupled Mechanical-Hydrological-Chemical Problems in Elasto-plastic Saturated Soils and Soft Rocks Using escript ....Pages 269-275
Analytical Evidence of Shear Band Bifurcations for Softening Materials....Pages 277-283
Shear Banding in Cross-Anisotropic Sand Tests with Stress Rotation....Pages 285-291
Instability of Unsaturated Soil During the Water Infiltration....Pages 293-299
A Revisiting of Undrained Shear Banding in Water-Saturated Sand....Pages 301-307
Strain Localization Conditions Under True Triaxial Stress States....Pages 309-314
Front Matter....Pages 267-267
Meso-Scale Evolution of Shear Localization Observed in Plane Strain Experiment on Kaolin Clay....Pages 315-320
Failure of Castlegate Sandstone Under True Triaxial Loading....Pages 321-326
Frequency Signature of Damage Localization....Pages 327-332
Modeling of Weathered and Moisture Sensitive Granular Materials....Pages 333-338
Effect of Different Sample Preparation Methods on the Behavior of Granular Materials Using Bender Elements....Pages 339-344
Characterization of the Strain Localization in a Porous Rock in Plane Strain Condition Using a New True-Triaxial Apparatus....Pages 345-352
Granular Materials at Meso and Macro Scale: Photo-Elasticity and Digital Image Correlation....Pages 353-358
Back Matter....Pages 359-361