期刊
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
卷 38, 期 2, 页码 167-188出版社
WILEY
DOI: 10.1002/nag.2203
关键词
granular element method; discrete element method; discrete mechanics; NURBS; multiscale analysis
资金
- NSF [1060087]
- AFOSR YIP of the California Institute of Technology [FA9550-11-1-0052]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1060087] Funding Source: National Science Foundation
This paper endows the recently-proposed granular element method (GEM) with the ability to perform 3D discrete element calculations. By using non-uniform rational B-Splines to accurately represent complex grain geometries, we proposed an alternative approach to clustering-based and polyhedra-based discrete element methods whereby the need for complicated and ad hoc approaches to construct 3D grain geometries is entirely bypassed. We demonstrate the ability of GEM in capturing arbitrary-shaped 3D grains with great ease, flexibility, and without excessive geometric information. Furthermore, the applicability of GEM is enhanced by its tight integration with existing non-uniform rational B-Splines modeling tools and ability to provide a seamless transition from binary images of real grain shapes (e.g., from 3D X-ray CT) to modeling and discrete mechanics computations.Copyright (c) 2013 John Wiley & Sons, Ltd.
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