Simulation of granular packing of particles with different size distributions

Author(s)
J.K. Chen, T. Jia, Y. Zhang
Publisher
Elsevier
Source
Computational Materials Science
Keywords
Distinct element method, Granular Matter, Particles Packing, Size Distribution
Year
2012

The study of granular matter composed of spherical particles is of interest in manufacturing, material, and metallurgy. The viscoelastic and frictional contacts between the particles are the cause of forming the agglomeration. We present a numerical simulation for particles packing with three different kinds of size distributions: monosize, bimodal, and Gaussian, using distinct element method (DEM). The particles are initially put randomly but without any overlap, and then fall down due to the gravity force and collide with neighbor particles. Because of the dissipative factors of viscoelastic collision and frictional force, all the particles finally come together to form an agglomeration. Coordination number, porosity, radial distribution function, and force distribution are calculated for different size distributions. It is demonstrated that particle size distribution does affect the granular packing structure.

Keywords: Granular Matter, Particles Packing, Size Distribution, Distinct Element Method

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