The effect of contact torques on porosity of cohesive powders
arXiv:cond-mat/0403110 · doi:10.1007/s10035-004-0184-8
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.
arXiv comment5 pages, 5 figures
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- Collapsing granular suspensions
- A micromechanical model of collapsing quicksand
- Macromechanical behavior of oxide nanopowders during compaction processes
- Ultraslow settling kinetics of frictional cohesive powders