Homogenization of granular material modeled by a three-dimensional discrete element method

authored by

Christian Wellmann, Claudia Lillie, Peter Wriggers

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.

Organisation(s)

Institute of Continuum Mechanics

Type

Article

Journal

Computers and geotechnics

Volume

35

Pages

394-405

No. of pages

12

ISSN

0266-352X

Publication date

31.07.2007

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology, Computer Science Applications

Electronic version(s)

https://doi.org/10.1016/j.compgeo.2007.06.010 (Access: Unknown)

 

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