Discrete element method and its application to the analysis of penetration into granular media
Application of discrete element method (DEM) to keel penetration in granular media is investigated. The basic relations for viscoâ€elastic granular media composed of spherical particles are presented, together with 5th order Gear predictorâ€corrector scheme for timeâ€integration. The background ver...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Vilnius Gediminas Technical University
2004-03-01
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| Series: | Journal of Civil Engineering and Management |
| Subjects: | |
| Online Access: | http://localhost/journals.vgtu.lt/index.php/JCEM/article/view/8953 |
| Summary: | Application of discrete element method (DEM) to keel penetration in granular media is investigated. The basic relations for viscoâ€elastic granular media composed of spherical particles are presented, together with 5th order Gear predictorâ€corrector scheme for timeâ€integration. The background version of DEM and numerical time integration algorithm are developed and implemented into DEMMAT code. The implementation of timeâ€integration algorithm is verified by simple tests concerning particleâ€particle, particleâ€wall interactions, for which analytical expressions exist. By limiting the size of the media domain, the threeâ€dimensional problem is reduced to particular case presented as twoâ€dimensional domain of spherical particles. The variation of keel reaction and distribution of the particle forces due to different material properties are investigated.
First Published Online: 14 Oct 2010
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| ISSN: | 1392-3730 1822-3605 |