Discrete element model for general polyhedra
- verfasst von
- Alfredo Gay Neto, Peter Wriggers
- Abstract
We present a version of the Discrete Element Method considering the particles as rigid polyhedra. The Principle of Virtual Work is employed as basis for a multibody dynamics model. Each particle surface is split into sub-regions, which are tracked for contact with other sub-regions of neighboring particles. Contact interactions are modeled pointwise, considering vertex-face, edge-edge, vertex-edge and vertex-vertex interactions. General polyhedra with triangular faces are considered as particles, permitting multiple pointwise interactions which are automatically detected along the model evolution. We propose a combined interface law composed of a penalty and a barrier approach, to fulfill the contact constraints. Numerical examples demonstrate that the model can handle normal and frictional contact effects in a robust manner. These include simulations of convex and non-convex particles, showing the potential of applicability to materials with complex shaped particles such as sand and railway ballast.
- Organisationseinheit(en)
-
Institut für Kontinuumsmechanik
- Externe Organisation(en)
-
Universidade de Sao Paulo
- Typ
- Artikel
- Journal
- Computational Particle Mechanics
- Band
- 9
- Seiten
- 353-380
- Anzahl der Seiten
- 28
- ISSN
- 2196-4378
- Publikationsdatum
- 03.2022
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Numerische Mechanik, Tief- und Ingenieurbau, Numerische Mathematik, Modellierung und Simulation, Fließ- und Transferprozesse von Flüssigkeiten, Computational Mathematics
- Elektronische Version(en)
-
https://doi.org/10.1007/s40571-021-00415-z (Zugang:
Offen)
