Homogenization of granular material modeled by a 3D DEM
Computational Methods in Applied Sciences, ISSN: 1871-3033, Vol: 25, Page: 211-231
2011
- 15Citations
- 11Captures
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Conference Paper Description
Within this contribution the mechanical behavior of dry frictional granular material is modeled by a three-dimensional discrete element method (DEM). The DEM uses a superquadric particle geometry which allows to vary the elongation and angularity of the particles and therefore enables a better representation of real grain shapes compared to standard spherical particles. To reduce computation times an efficient parallelization scheme is developed which is based on the Verlet list concept and the sorting of particles according to their spatial position. The macroscopic mechanical behavior of the particle model is analyzed through standard triaxial tests of periodic cubical samples. A technique to accurately apply stress boundary conditions is presented in detail. Finally, the triaxial tests are used to analyze the influence of the sample size and the particle shape on the resulting stress-strain behavior.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84964091572&origin=inward; http://dx.doi.org/10.1007/978-94-007-0735-1_8; https://link.springer.com/10.1007/978-94-007-0735-1_8; https://dx.doi.org/10.1007/978-94-007-0735-1_8; https://link.springer.com/chapter/10.1007/978-94-007-0735-1_8; http://www.springerlink.com/index/10.1007/978-94-007-0735-1_8; http://www.springerlink.com/index/pdf/10.1007/978-94-007-0735-1_8
Springer Science and Business Media LLC
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