Search
Now showing items 1-10 of 18
Particle-Based Discrete Element Modeling: Geomechanics Perspective
Publisher: American Society of Civil Engineers
Abstract: This paper is a review of the use of particulate discrete element modeling (DEM) in geomechanics. The overall objective of the paper is to serve as an introduction to researchers and practitioners in geomechanics who are ...
A Perspective on Darcy’s Law across the Scales: From Physical Foundations to Particulate Mechanics
Publisher: ASCE
Abstract: This paper puts forward a perspective or opinion that we can demonstrate Darcy’s law is valid at any scale where fluid can be modeled/analyzed as a continuum. Darcy’s law describes the flow of a fluid through a porous ...
Advancing Understanding of the Influence of Drained Cyclic Loading on Sand Behavior Using DEM
Publisher: ASCE
Abstract: Understanding the response of sand to drained cyclic loading is relevant to the design of abutments of integral bridges and foundations of wind turbines among other applications. In this study, the discrete element method ...
Modified Shear Spring Formulation for Discontinuous Deformation Analysis of Particulate Media
Publisher: American Society of Civil Engineers
Abstract: Ke and Bray (1995) presented the formulation of the discontinuous deformation analysis method (DDA) for a particulate medium consisting of two-dimensional disks. This original DDA formulation calculated the shear force at ...
Calculating the State Parameter in Crushable Sands
Publisher: ASCE
Abstract: The state parameter (ψ) measures the distance from the current state to the critical state line (CSL) in the compression plane. The existence of a correlation between both the peak angle of shearing resistance
Influence of Fabric on Stress Distribution in Gap-Graded Soil
Publisher: ASCE
Abstract: The combined influence of density and stress-induced fabric anisotropy on the nature of stress transmission in gap-graded soils with cohesionless fines has been explored using the discrete element method (DEM). Various ...
Influence of Particle Size Distribution on the Proportion of Stress-Transmitting Particles and Implications for Measures of Soil State
Publisher: ASCE
Abstract: It is generally accepted that the use of void ratio and bulk density as measures of soil state have limitations in the case of gap-graded soils because the finer grains may not transmit stress. However, no research has ...
Exploiting DEM to Link Thermal Conduction and Elastic Stiffness in Granular Materials
Publisher: ASCE
Abstract: Estimating the effective thermal conductivity (ETC) of granular materials is important in various engineering disciplines. The ETC of a granular material is not unique, rather it depends upon the material’s packing ...
Quantifying Shear-Induced Permeability Changes in Medium-Loose Sands
Publisher: ASCE
Abstract: For many applications in geotechnical engineering, an accurate assessment of soil hydraulic conductivity is important to predict settlements and pore water pressure changes. Laboratory test data can inform the permeability ...
DEM Exploration of Stress Transmission and Small Strain Behavior of Rubber Sand Mixtures
Publisher: American Society of Civil Engineers
Abstract: This paper presents a method to create rubber clumps without significant volume loss within the framework of the discrete-element method (DEM), enhancing the understanding of particle-scale stress transmission and small ...
CSV
RIS