Abstract (may include machine translation)
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.
Original language | English |
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Pages (from-to) | 139-143 |
Number of pages | 5 |
Journal | Granular Matter |
Volume | 7 |
Issue number | 2-3 |
DOIs | |
State | Published - Jul 2005 |
Externally published | Yes |
Keywords
- Cohesive powders
- Contact dynamics simulations
- Contact torques
- Granular compaction