High-density sphere packing for discrete element method simulations

被引:71
|
作者
Labra, Carlos [1 ]
Onate, Eugenio [1 ]
机构
[1] Tech Univ Catalonia, Int Ctr Numer Methods Engn, Barcelona 08034, Spain
来源
COMMUNICATIONS IN NUMERICAL METHODS IN ENGINEERING | 2009年 / 25卷 / 07期
关键词
sphere packing; discrete elements; mesh generation; GRANULAR ASSEMBLIES; MODEL; ALGORITHM;
D O I
10.1002/cnm.1193
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The first step in a discrete element simulation is the discretization of the domain into a set of particles. The cost of generating a good cylindrical or spherical packing has resulted in a great number of approaches during the last years. A new algorithin is proposed for high-density packing using a scheme that minimizes the distance between each particle. Using the Support of a finite element mesh, less time is needed in order to achieve a low porosity configuration. In addition, a boundary constraint is introduced. The application of the same optimization scheme is used as a condition to force a good surface definition. The results obtained show a high efficiency for the generation of low porosity packing, achieving values smaller than 10% in 2D cases and 30% in 3D cases. Copyright (C) 2008 John Wiley & Sons, Ltd.
引用
收藏
页码:837 / 849
页数:13
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