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

✍ Scribed by C. Wellmann; C. Lillie; P. Wriggers

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
754 KB
Volume
35
Category
Article
ISSN
0266-352X

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✦ Synopsis

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.

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