The effect of contact torques on porosity of cohesive powders

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.

5 pages, 5 figures

Cited by in corpus (2)

• Computer simulation of model cohesive powders: influence of assembling procedure and contact laws on low consolidation states
• Computer simulation of model cohesive powders: Plastic consolidation, structural changes and elasticity under isotropic loads