Abstract
The method of granular dynamics is used to study the quasistatic uniaxial compaction of nanopowders with a particle size from 10 nm to several hundred nanometers. The interaction of individual particles includes Hertz elastic forces, Cattaneo–Mindlin friction forces, and van der Waals dispersion forces of attraction. The influence of the model cell size on simulation results is analyzed. The curves of uniaxial compression and elastic unloading in the "axial pressure–density" coordinates are plotted. The generalization of the traditional Hertz law in the range of relatively high strains is discussed.
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