The Experts below are selected from a list of 45405 Experts worldwide ranked by ideXlab platform

José E. Andrade - One of the best experts on this subject based on the ideXlab platform.

  • Is the Discrete Element Method Predictive
    2018
    Co-Authors: José E. Andrade
    Abstract:

    In this lecture, new developments on the Discrete Element Method will be presented, highlighting its capability to predict multiscale phenomena in granular materials. The main advance is realized by using level sets to be able to represent arbitrary shapes, which control the bulk of the granular packing behavior. It is shown that the Method can predict complex features observed using advanced experimental Methods. No continuum models are able to capture such rich phenomena across scales. The second part of this lecture deals with speculating the potential applications and impact that the DEM could have in areas of civil engineering, mechanics, and planetary science, given its current predictive and computational capabilities.

  • level set Discrete Element Method for three dimensional computations with triaxial case study
    Journal of The Mechanics and Physics of Solids, 2016
    Co-Authors: Reid Kawamoto, Edward Ando, Gioacchino Viggiani, José E. Andrade
    Abstract:

    In this paper, we outline the level set Discrete Element Method (LS-DEM) which is a Discrete Element Method variant able to simulate systems of particles with arbitrary shape using level set functions as a geometric basis. This unique formulation allows seamless interfacing with level set-based characterization Methods as well as computational ease in contact calculations. We then apply LS-DEM to simulate two virtual triaxial specimens generated from XRCT images of experiments and demonstrate LS-DEM's ability to quantitatively capture and predict stress–strain and volume–strain behavior observed in the experiments.

Reid Kawamoto - One of the best experts on this subject based on the ideXlab platform.

  • level set Discrete Element Method for three dimensional computations with triaxial case study
    Journal of The Mechanics and Physics of Solids, 2016
    Co-Authors: Reid Kawamoto, Edward Ando, Gioacchino Viggiani, José E. Andrade
    Abstract:

    In this paper, we outline the level set Discrete Element Method (LS-DEM) which is a Discrete Element Method variant able to simulate systems of particles with arbitrary shape using level set functions as a geometric basis. This unique formulation allows seamless interfacing with level set-based characterization Methods as well as computational ease in contact calculations. We then apply LS-DEM to simulate two virtual triaxial specimens generated from XRCT images of experiments and demonstrate LS-DEM's ability to quantitatively capture and predict stress–strain and volume–strain behavior observed in the experiments.

Edward Ando - One of the best experts on this subject based on the ideXlab platform.

  • level set Discrete Element Method for three dimensional computations with triaxial case study
    Journal of The Mechanics and Physics of Solids, 2016
    Co-Authors: Reid Kawamoto, Edward Ando, Gioacchino Viggiani, José E. Andrade
    Abstract:

    In this paper, we outline the level set Discrete Element Method (LS-DEM) which is a Discrete Element Method variant able to simulate systems of particles with arbitrary shape using level set functions as a geometric basis. This unique formulation allows seamless interfacing with level set-based characterization Methods as well as computational ease in contact calculations. We then apply LS-DEM to simulate two virtual triaxial specimens generated from XRCT images of experiments and demonstrate LS-DEM's ability to quantitatively capture and predict stress–strain and volume–strain behavior observed in the experiments.

Gioacchino Viggiani - One of the best experts on this subject based on the ideXlab platform.

  • level set Discrete Element Method for three dimensional computations with triaxial case study
    Journal of The Mechanics and Physics of Solids, 2016
    Co-Authors: Reid Kawamoto, Edward Ando, Gioacchino Viggiani, José E. Andrade
    Abstract:

    In this paper, we outline the level set Discrete Element Method (LS-DEM) which is a Discrete Element Method variant able to simulate systems of particles with arbitrary shape using level set functions as a geometric basis. This unique formulation allows seamless interfacing with level set-based characterization Methods as well as computational ease in contact calculations. We then apply LS-DEM to simulate two virtual triaxial specimens generated from XRCT images of experiments and demonstrate LS-DEM's ability to quantitatively capture and predict stress–strain and volume–strain behavior observed in the experiments.

Vincent Richefeu - One of the best experts on this subject based on the ideXlab platform.

  • contact dynamics as a nonsmooth Discrete Element Method
    Mechanics of Materials, 2009
    Co-Authors: Farhang Radjai, Vincent Richefeu
    Abstract:

    The contact dynamics (CD) Method is presented as a Discrete Element Method for the sim- ulation of nonsmooth granular dynamics at the scale of particle rearrangements where small elastic response times and displacements are neglected. Two central ingredients of the Method are detailed: (1) The contact laws expressed as complementarity relations between the contact forces and velocities and (2) The nonsmooth motion involving velocity jumps with impulsive unresolved forces as well as smooth motion with resolved static forces. We show that a consistent description of the dynamics at the velocity level leads to an implicit time-stepping scheme together with an explicit treatment of the evolution of the particle configuration. We also discuss the intuitive features of the CD Method with regard to collective phenomena involved in the multicontact dynamics of granular media: the role of the coarse-graining time dt, the precision issues and the interpretation of the restitution coefficients.