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.


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    Title :

    Numerical Analysis of Porosity of Granular Materials


    Contributors:
    Huang, Wan-qing (author) / Lu, Yang (author) / Liao, Jun (author) / He, Chang-xuan (author)

    Conference:

    First International Conference on Transportation Engineering ; 2007 ; Southwest Jiaotong University, Chengdu, China



    Publication date :

    2007-07-09




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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