Bartels, Guido; Unger, Tamas; Kadau, Dirk; Wolf, Dietrich; Kertesz, Janos:
The effect of contact torques on porosity of cohesive powders
2005
In: Granular matter, Jg. 7 (2005), Heft 2-3, S. 139 - 143
Artikel/Aufsatz in Zeitschrift2005Physik
Titel:
The effect of contact torques on porosity of cohesive powders
Autor(in):
Bartels, Guido; Unger, Tamas; Kadau, Dirk; Wolf, DietrichLSF; Kertesz, Janos
Erscheinungsjahr
2005
DOI:

Abstract:

The porosity of uniaxially compacted cohesive powders depends on the applied stress (including gravity). The case, where these stresses are weak, is considered. The compaction results in a porosity which is a function of sliding, rolling and torsion friction. By contact dynamics simulations it is shown that the influences of contact torques (static rolling and torsion friction) on the porosity are significant and approximately additive. The relevance for nano-powder pressure sintering is discussed.