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RISSimulation of High-Strain-Rate Comminution through a Breakage Model with Adaptive Rate Dependence
Publisher: ASCE
Abstract: While laboratory evidence suggests that particle crushing generates nonnegligible rate-dependence in granular materials, few constitutive laws reproduce such effects in light of grain-scale fracture mechanisms. This paper ...
Numerical Quantification of Shear Band–Induced Scale Effects in Physical Models
Publisher: American Society of Civil Engineers
Abstract: AbstractRescaling the performance of reduced physical models to prototype scale must account
for the interaction between the tested system and finite plastic deformation zones.
Although higher-order continuum models offer ...
Controllability Criteria for Soils Saturated by a Compressible Fluid
Publisher: American Society of Civil Engineers
Abstract: The liquefaction of sediments with gas bubbles occluded in the pore fluid can be studied neither through classical methods for saturated soils nor through concepts valid for unsaturated soils with continuous fluid phases. ...
Diffusive Instability of Pore Pressure Transients in Deformable Unsaturated Soils
Publisher: American Society of Civil Engineers
Is Wetting Collapse an Unstable Compaction Process?
Publisher: American Society of Civil Engineers
Abstract: This paper provides an interpretation of the phenomenon of wetting collapse in fine-grained soils based on principles of material stability. For this purpose, classic experiments displaying the accumulation of irreversible ...
Modeling Rate-Dependent Shearing in Crushable Sand with a Pseudoviscous Kinetic Energy Potential
Publisher: American Society of Civil Engineers
Abstract: AbstractThis paper discusses a constitutive formulation to capture kinetic energy fluctuations
associated with the high-strain-rate response of sand. For this purpose, we refer
to recent progress on dynamic fracture, where ...
DEM Modeling of Grain Size Effect in Brittle Granular Soils
Publisher: ASCE
Abstract: The size-dependent strength of individual particles controls several key aspects of the constitutive response of brittle granular materials. Capturing this factor in numerical analyses is essential to accurately model the ...
X-Ray Microtomography Measurements of Coevolving Particle Size and Shape
Publisher: American Society of Civil Engineers
Abstract: AbstractThis study measures simultaneous changes in particle size and shape during grain crushing
and proposes quantitative metrics to track their coevolving statistical distribution.
Idealized granular materials with ...
Unified Identification of Viscous Instability in Both Solid and Liquid Clays
Publisher: American Society of Civil Engineers
Abstract: AbstractWater-saturated clays are vulnerable to unstable creep if subjected to a relatively
high shear stress, a phenomenon known as creep rupture for solid geomaterials and
viscosity bifurcation for clay suspensions. By ...
Model Prediction of Static Liquefaction: Influence of the Initial State on Potential Instabilities
Publisher: American Society of Civil Engineers
Abstract: This paper examines the influence of the initial state of sands on the potential for undrained instability. The main goal is to illustrate how advanced constitutive modeling of sand behavior can be used to evaluate the ...