4.6 Article

Effects of Crushing Characteristics on Rheological Characteristics of Particle Systems

Related references

Note: Only part of the references are listed.
Article Engineering, Geological

On the impact of dry granular flow against a rigid barrier with basal clearance via discrete element method

Weigang Shen et al.

Summary: This study investigates the interactions between dry granular flow and rigid barriers with different basal clearances through numerical modeling. The study identifies the clearance size that causes clogging and quantifies the influences of basal clearance and slope angle on outflow rate, energy-breaking efficiency, and retention efficiency. The results provide insights into the design of basal clearance for rigid barriers.

LANDSLIDES (2022)

Article Geosciences, Multidisciplinary

Dynamic triggering mechanism of the Pusa mining-induced landslide in Nayong County, Guizhou Province, China

Fangpeng Cui et al.

Summary: The study revealed the triggering mechanisms of landslides in the karst areas of Southwestern China, including progressive deformation, critical failure, shattering, and ejection, under the influence of mining activities and heavy rainfall.

GEOMATICS NATURAL HAZARDS & RISK (2022)

Article Engineering, Geological

Unsteady overflow behavior of polydisperse granular flows against closed type barrier

Bei Zhang et al.

Summary: The study investigates the overflow behavior of polydisperse granular flows against closed type barriers and its importance in multiple-barrier design. Using a numerical model, the morphology of the dead zone behind the upstream barrier was found to significantly influence the overflow behavior. Different overflow mechanisms result in varying launch distances, with steeper and gentler barrier configurations being more dangerous due to larger launch distances. Additionally, limitations of numerical modeling, such as the effect of the fluid phase on overflow, are discussed along with the direct application of the results in engineering design.

ENGINEERING GEOLOGY (2021)

Article Engineering, Mechanical

Study on micro-plastic behavior and tribological characteristics of granular materials in friction process

Gang Wang et al.

Summary: This study investigates the micro-plastic behavior of granular material in three-body friction interfaces and its impact on friction characteristics. A numerical model based on the discrete element method was used to analyze the influence of friction pair working conditions and internal bonding strength on particle behavior. Experiment results show that particle breakage leads to reduced load-bearing capacity and increased friction coefficient. The plastic behavior of particles is categorized into elastic deformation, breakage, and plastic rheology based on bond strength and friction pair conditions.

INDUSTRIAL LUBRICATION AND TRIBOLOGY (2021)

Article Mechanics

Drag, diffusion and segregation in inertial granular flows

Robbie S. J. Bancroft et al.

Summary: In this study, inter-species drag forces in granular flows were investigated using discrete element simulations in a uniform environment. It was found that the strength of drag force scales with the granular inertial number, and a model was proposed to explain this scaling by linking drag strength to grain velocity fluctuations. These findings suggest that variations in the strength of inter-species drag play a significant role in the segregation rate in dense free-surface flows.

JOURNAL OF FLUID MECHANICS (2021)

Article Engineering, Geological

Dry granular masses impacting on rigid obstacles: numerical analysis and theoretical modelling

Irene Redaelli et al.

Summary: The study emphasizes the importance of assessing the time evolution of impact force exerted by dry flowing masses on rigid obstacles for dynamic design of sheltering structures and vulnerability evaluation of existing structures. A physically based force-time function is proposed to correlate local information with macroscopic response, providing insight into the impact process and factors influencing impact force-time evolution.

ACTA GEOTECHNICA (2021)

Article Chemistry, Physical

Self-diffusion scalings in dense granular flows

Riccardo Artoni et al.

Summary: This study reports measurements of self-diffusion coefficients in collisional shearing flows of frictional, inelastic spheres, highlighting the impact of solid volume fractions on diffusivity. Comparison with empirical scaling and kinetic theory predictions reveals discrepancies, suggesting the need for further investigation into the diffusion behavior of such systems.

SOFT MATTER (2021)

Article Computer Science, Interdisciplinary Applications

Particle size effects on small-scale avalanches and a mu(I) rheology-based simulation

Jianbo Fei et al.

COMPUTERS AND GEOTECHNICS (2020)

Article Geochemistry & Geophysics

An Experimental Study on Effect of Boundary Condition on Particle Damage in Shear Zone of Crushed Sand

Nasrin Vafaei et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2019)

Article Engineering, Chemical

Diffusion, mixing, and segregation in confined granular flows

Alexander M. Fry et al.

AICHE JOURNAL (2019)

Article Engineering, Geological

Evolution of Particle Breakage for Calcareous Sands during Ring Shear Tests

Houzhen Wei et al.

INTERNATIONAL JOURNAL OF GEOMECHANICS (2018)

Article Astronomy & Astrophysics

Physics of particulate flows: From sand avalanche to active suspensions in plants

Yoel Forterre et al.

COMPTES RENDUS PHYSIQUE (2018)

Article Geosciences, Multidisciplinary

Forecasting landslide mobility using an SPH model and ring shear strength tests: a case study

Miao Yu et al.

NATURAL HAZARDS AND EARTH SYSTEM SCIENCES (2018)

Article Engineering, Geological

Particle shape factors and fractal dimension after large shear strains in carbonate sand

X. Zhang et al.

GEOTECHNIQUE LETTERS (2018)

Article Engineering, Chemical

Density-driven sinking dynamics of a granular ring in sheared granular flows

Chun-Chung Liao et al.

ADVANCED POWDER TECHNOLOGY (2017)

Article Engineering, Chemical

Rheology of granular materials with size distributions across dense-flow regimes

Yile Gu et al.

POWDER TECHNOLOGY (2016)

Article Physics, Fluids & Plasmas

Bridging the rheology of granular flows in three regimes

Sebastian Chialvo et al.

PHYSICAL REVIEW E (2012)

Article Physics, Multidisciplinary

Fluctuations and Criticality of a Granular Solid-Liquid-Like Phase Transition

Gustavo Castillo et al.

PHYSICAL REVIEW LETTERS (2012)

Article Engineering, Geological

Particle damage observed in ring shear tests on sands

Abouzar Sadrekarimi et al.

CANADIAN GEOTECHNICAL JOURNAL (2010)

Article Mechanics

Flows of Dense Granular Media

Yoël Forterre et al.

Annual Review of Fluid Mechanics (2008)

Article Engineering, Geological

Particle breakage during shearing of a carbonate sand

MR Coop et al.

GEOTECHNIQUE (2004)