Abstract: The irregularity of particle motions during quasi-static deformation is investigated using discrete element (DEM) simulations of sphere and sphere-cluster assemblies. A total of three types of interparticle movements are ...

Abstract: Stable and efficient algorithms are presented for a three-dimensional particle for discrete-element simulations. The particle, termed an “ovoid,” approximates an axisymmetric ellipsoid but is composed of two spherical caps ...

Abstract: The paper presents a definition of particle rolling for the interactions of two and three-dimensional particles of arbitrary shape, in case of infinitesimal particle translations and rotations. ...

Abstract: The paper presents a definition of rolling between a pair of two-dimensional or three-dimensional particles with a compliant contact. The definition of rolling movement is based upon the shapes of the objects’ surfaces as ...

Abstract: The paper addresses the question of whether the number of particles in a noncemented granular assembly will affect the mechanical characteristics of the assembly: its strength and stiffness. The question is answered by ...

Abstract: An integrated approach to teaching technical writing requires a unified faculty commitment to improving student writing, student motivation, appropriate writing assignments, strong evaluation standards, and productive ...

Abstract: Soil exhibit viscous creep behavior, and the creep strain rate is known to change greatly with time. Various possible reasons for the changing creep rate are considered. The writers propose a mechanism for interparticle ...

Abstract: Force chains within a granular material are the major load carriers responsible for the strength of a material. The authors study the spatial distribution of force chains across length scales in a three-dimensional (3D) ...