Upon deposition of spherical particles, a discrete element program which was developed on the platform of VC++ was applied to simulate the re-location of particles under vibration. Computed results show that decreasing the relative dimension of the boundary (ratio of particle's diameter to the length of cubic container) decreases porosity of monosized spheres. For binary mixtures (the small-to-large size ratio is 1: 2) of spherical particles, as the solid volume fraction of the smaller particles increases, the porosity of mixtures will decrease to minimum and then increase. The proposed simulation technique was validated by the physical experiments of packing gravels. Taping mechanism was introduced to the program frame to simulate vibration during packing.
Numerical Analysis of Porosity of Granular Materials
First International Conference on Transportation Engineering ; 2007 ; Southwest Jiaotong University, Chengdu, China
2007-07-09
Conference paper
Electronic Resource
English
Numerical Analysis of Porosity of Granular Materials
British Library Conference Proceedings | 2007
|Controlled-porosity composite materials
NTRS | 1977
|Axial segregation in horizontally vibrated granular materials: A numerical study
Springer Verlag | 2009
|Electrostatics of Granular Materials
NTRS | 2004
|