Bifurcations, instabilities and degradations in geomaterials

Published on Jan 1, 2011
· DOI :10.1007/978-3-642-18284-6
Richard Wan1
Estimated H-index: 1
Mustafa Alsaleh1
Estimated H-index: 1
Joseph F. Labuz32
Estimated H-index: 32
Failure in granular materials: macro and micro views.- Instability in Loose Sand: Experimental Results and Numerical Simulations with a Microstructural Model.-Failure in granular materials in relation to material instability, fabric and plastic flow issues.-Loss of controllability in partially saturated soils.- Critical plane approach to analysis of failure criteria for anisotropic geomaterials.-A simple method to consider density and bonding effects in modeling of geomaterials.-Cyclic mobility of sand and its simulation in boundary value problems.-An updated hypoplastic constitutive model, its implementation and application.- A Chemo-Thermo-Mechanically Coupled Analysis of Ground Deformation Induced by Methane Hydrate Dissociation.-Model for Pore-Fluid Induced Degradation of Soft Rocks.-Natural Processes and Strength Degradation.-Local behavior of pore water pressure during plane-strain compression of soft rock.- FE investigations of dynamic shear localization in granular bodies within non-local hypoplasticity using ALE formulation.-Concurrent multiscale computational modeling for dense dry granular materials interfacing deformable solid bodies.-Performance of SPH method for deformation analyses of geomaterials.-CIP-based Numerical Simulation of Snow Avalanche.- A Mesh Free Method to Simulate Earthmoving Operations In Fine-Grain Cohesive Soils.-Analysis of deformation and damage processes in soil-tool interaction problems.-Modeling Excavator-Soil Interactions.
📖 Papers frequently viewed together
3 Authors (Qiushi Chen, ..., Jakob T. Ostien)
2 Citations
2 Authors (Wei Wu, Hai-Sui Yu)
14 Citations
Cited By6
#1Jian-Xi Ren (Xi'an University of Science and Technology)
#2Chen Xu (Xi'an University of Science and Technology)
Last. Liu Tiantian (Xi'an University of Science and Technology)
view all 6 authors...
The red sandstone in the Luohe Formation in Shaanxi Province, China, contains a rich aquifer system. The excavation of coal mines and tunnels through the Luohe Formation affects the mechanical properties of the rocks in the surrounding environment, creating the need to determine the effect of the porewater pressure and unloading rate on the mechanical properties of the red sandstone. Using the constant axial pressure unloading method, triaxial unloading tests were performed under different unloa...
#1Mohammad Hazeghian (AUT: Amirkabir University of Technology)H-Index: 4
#2Abbas Soroush (AUT: Amirkabir University of Technology)H-Index: 16
Abstract A GPU-based two-dimensional discrete element methodology allowing for grain rolling resistance is adopted to study the engineering and fundamental aspects of shear band formation in normal and reverse faulting through an initially dense sand; of course, the paper emphasizes on fundamental aspects. The employed DEM modeling methodology is verified with the experimental results and FEM prediction of the pattern of shear bands developed through a trap-door centrifuge model test. Regarding ...
15 CitationsSource
#1Muhammad Azeem Raza (Missouri University of Science and Technology)H-Index: 4
Large capacity shovels are used to achieve economic bulk production in surface mining operations. The suspended payload combined with dipper weight and formation resistive forces results in severe stress loading of the shovel front-end assembly. Material flaws, high stresses and harsh excavation conditions can initiate cracks in the dipper-teeth assembly. High stresses can cause these cracks to propagate to critical lengths resulting in fatigue failure, unscheduled downtimes, costly unplanned re...
#1N. Kuczyńska (GUT: Gdańsk University of Technology)H-Index: 1
#2Michal Wojcik (GUT: Gdańsk University of Technology)H-Index: 19
Last. Jacek Tejchman (GUT: Gdańsk University of Technology)H-Index: 42
view all 3 authors...
Abstract The paper presents 3D numerical analysis results on the effect of bulk solid on strength and stability of metal cylindrical silos with corrugated walls (without stiffeners) during filling. The behaviour of two bulk solids (dry sand and wheat) was described with a hypoplastic constitutive model. Non-linear FE analyses with both geometric and material non-linearity were performed. The numerical results were compared with the Eurocode formulae. The strengthening effect of the stored solid,...
14 CitationsSource
#1Khalid A. Alshibli (UT: University of Tennessee)H-Index: 28
#2Mehmet B. Cil (UT: University of Tennessee)H-Index: 10
Last. Ulrich LienertH-Index: 29
view all 4 authors...
The three-dimensional X-ray diffraction (3DXRD) nondestructive technique was used to measure lattice strains within individual sand particles subjected to compressive loading. Three experiments were conducted on similar single columns of silica sand particles with particle sizes between 0.595 and 0.841 mm. In each experiment, three sand particles were placed inside an acrylic mold with an inner diameter of 1 mm. Multiple in situ 3DXRD scans were acquired for each sand column as compressive load ...
24 CitationsSource
#1Richard A. Regueiro (CU: University of Colorado Boulder)H-Index: 17
#2Beichuan Yan (CU: University of Colorado Boulder)H-Index: 7
The paper presents recent progress in the development of a computational multiscale modeling approach for simulating the interfacial mechanics between dense dry granular materials and deformable solid bodies. Applications include soil-tire/track/tool/penetrometer interactions, geosynthetics-soil pull out strength, among others. The approach involves a bridging scale decomposition coupling between a three-dimensional ellipsoidal discrete element (DE) model and a finite strain pressure-sensitive m...