Comparison of the macroscopic behavior of granular materials modeled by different constitutive equations on the microscale
- verfasst von
- Christian Wellmann, Claudia Lillie, Peter Wriggers
- Abstract
In this paper a three-dimensional discrete element method (DEM) is used to model cohesionless granular materials. Two different microscopic constitutive equations are used to resolve the contacts between single particles in the DEM: First, a simple penalty type contact law and second, a more sophisticated Hertzian type contact law. Numerical tests in form of DEM simulations of a cuboid particle sample under compression and shearing are performed using both microscopic constitutive equations. The microscopic results of the DEM in terms of inter-particle contact forces and particle trajectories are transferred to macroscopic results in terms of stresses and strains by a homogenization approach. The macroscopic results are presented and compared for the different microscopic constitutive equations.
- Organisationseinheit(en)
-
Institut für Kontinuumsmechanik
- Typ
- Artikel
- Journal
- Finite Elements in Analysis and Design
- Band
- 44
- Seiten
- 259-271
- Anzahl der Seiten
- 13
- ISSN
- 0168-874X
- Publikationsdatum
- 04.03.2008
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Analysis, Allgemeiner Maschinenbau, Computergrafik und computergestütztes Design, Angewandte Mathematik
- Elektronische Version(en)
-
https://doi.org/10.1016/j.finel.2007.11.007 (Zugang:
Unbekannt)
