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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.
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页码:837 / 849
页数:13
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