Constitutive relations of dense granulates with friction and adhesion from DEM

Luding, Stefan (2009) Constitutive relations of dense granulates with friction and adhesion from DEM. In: International Conference on Particle-Based Methods, Particles 2009, 25-27 November 2009, Barcelona, Spain.

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Abstract:	Granular materials in a split-bottom ring shear cell geometry show wide shear bands under slow, quasi-static deformation. From discrete element simulations (DEM), continuum fields like the deformation gradient and stress can be computed with the goal to formulate objective constitutive relations for the flow behavior. From a single simulation only, by applying time- and (local) space-averaging, yield loci can be obtained: linear for noncohesive granular materials and non-linear with peculiar pressure dependence for adhesive powders.
Item Type:	Conference or Workshop Item
Copyright:	© 2009 CIMNE
Faculty:	Engineering Technology (CTW)
Research Group:	Engineering Fluid Dynamics (EFD)
Link to this item:	http://purl.utwente.nl/publications/80353
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