Brendel, Lothar; Török, Janos; Kirsch, Roman; Bröckel, Ulrich:
A contact model for the yielding of caked granular materials
2011
In: Granular matter, Jg. 13 (2011), Heft 6, S. 777 - 786
Artikel/Aufsatz in Zeitschrift / Fach: Physik
Fakultät für Physik » Theoretische Physik
Titel:
A contact model for the yielding of caked granular materials
Autor(in):
Brendel, Lothar im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Török, Janos im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Kirsch, Roman; Bröckel, Ulrich
Erscheinungsjahr
2011
Erschienen in:
Granular matter, Jg. 13 (2011), Heft 6, S. 777 - 786
ISSN
ISSN
WWW URL

Abstract:

We present a visco-elastic coupling model between caked spheres, suitable for Distinct Element Method simulations, which incorporates the different loading mechanisms (tension, shear, bending, torsion) in a combined manner and allows for a derivation of elastic and failure properties on a common basis. In pull, shear, and torsion failure tests with agglomerates of up to 10.000 particles, we compare the failure criterion to different approximative variants of it, with respect to accuracy and computational cost. The failure of the agglomerates, which behave according to elastic parameters derived from the contact elasticity, gives also insight into the relative relevance of the different load modes.