Details
| Original language | English |
|---|---|
| Pages (from-to) | 394-405 |
| Number of pages | 12 |
| Journal | Computers and geotechnics |
| Volume | 35 |
| Issue number | 3 |
| Publication status | Published - 31 Jul 2007 |
Abstract
A homogenization strategy for granular materials is presented and applied to a three-dimensional discrete element method (DEM), that uses superellipsoids as particles. Macroscopic quantities are derived from the microscopic quantities resulting from a DEM simulation by averaging over representative volume elements (RVEs). The implementation of an RVE is described in detail regarding the definition and discretization of the RVE boundary. The homogenization strategy is validated by DEM simulations of compression and shear tests of cohesionless granular assemblies. Finally, an elasto-plastic material model is fitted to the resulting stress-strain curves.
Keywords
- DEM, Homogenization, RVE
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
- Computer Science(all)
- Computer Science Applications
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In: Computers and geotechnics, Vol. 35, No. 3, 31.07.2007, p. 394-405.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Homogenization of granular material modeled by a three-dimensional discrete element method
AU - Wellmann, Christian
AU - Lillie, Claudia
AU - Wriggers, Peter
PY - 2007/7/31
Y1 - 2007/7/31
N2 - A homogenization strategy for granular materials is presented and applied to a three-dimensional discrete element method (DEM), that uses superellipsoids as particles. Macroscopic quantities are derived from the microscopic quantities resulting from a DEM simulation by averaging over representative volume elements (RVEs). The implementation of an RVE is described in detail regarding the definition and discretization of the RVE boundary. The homogenization strategy is validated by DEM simulations of compression and shear tests of cohesionless granular assemblies. Finally, an elasto-plastic material model is fitted to the resulting stress-strain curves.
AB - A homogenization strategy for granular materials is presented and applied to a three-dimensional discrete element method (DEM), that uses superellipsoids as particles. Macroscopic quantities are derived from the microscopic quantities resulting from a DEM simulation by averaging over representative volume elements (RVEs). The implementation of an RVE is described in detail regarding the definition and discretization of the RVE boundary. The homogenization strategy is validated by DEM simulations of compression and shear tests of cohesionless granular assemblies. Finally, an elasto-plastic material model is fitted to the resulting stress-strain curves.
KW - DEM
KW - Homogenization
KW - RVE
UR - http://www.scopus.com/inward/record.url?scp=42649146226&partnerID=8YFLogxK
U2 - 10.1016/j.compgeo.2007.06.010
DO - 10.1016/j.compgeo.2007.06.010
M3 - Article
AN - SCOPUS:42649146226
VL - 35
SP - 394
EP - 405
JO - Computers and geotechnics
JF - Computers and geotechnics
SN - 0266-352X
IS - 3
ER -