期刊
COMMUNICATIONS IN NUMERICAL METHODS IN ENGINEERING
卷 25, 期 7, 页码 837-849出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/cnm.1193
关键词
sphere packing; discrete elements; mesh generation
资金
- Publishing Arts Research Council [98-1846389]
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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