Open AccessNumerical Simulation on Dense Packing of Granular Materials by Container Oscillation
Author(s) -
Jun Liu,
Dongxun You
Publication year - 2013
Publication title -
advances in mechanical engineering/advances in mechanical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.318
H-Index - 40
eISSN - 1687-8140
pISSN - 1687-8132
DOI - 10.1155/2013/284693
Subject(s) - discrete element method , container (type theory) , granular material , spheres , mechanics , materials science , particle (ecology) , work (physics) , boundary (topology) , periodic boundary conditions , sphere packing , immersed boundary method , boundary value problem , physics , mathematics , composite material , mathematical analysis , thermodynamics , geology , oceanography , astronomy
The packing of granular materials is a basic and important problem in geomechanics. An approach, which generates dense packing of spheres confined in cylindrical and cuboidal containers in three steps, is introduced in this work. A loose packing structure is first generated by means of a reference lattice method. Then a dense packing structure is obtained in a container by simulating dropping of particles under gravitational forces. Furthermore, a scheme that makes the bottom boundary fluctuate up and down was applied to obtain more denser packing. The discrete element method (DEM) was employed to simulate the interactions between particle-particle and particle-boundary during the particles' motions. Finally, two cases were presented to indicate the validity of the method proposed in this work