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Compaction simulation of crystalline nano-powders under cold compaction process with molecular dynamics analysis
, Article Powder Technology ; Volume 373 , August , 2020 , Pages 741-753 ; Sameti, A. R ; Mofatteh, H ; Sharif University of Technology
Elsevier B. V
2020
Abstract
In this paper, the uniaxial cold compaction process of metal nano-powders is numerically analyzed through the Molecular Dynamics (MD) method. The nano-powders consist of nickel and aluminum nano-particles in the pure and mixed forms with distinctive contributions. The numerical simulation is performed using the different number of nano-particles, mixing ratios of Ni and Al nano-particles, compaction velocities, and ambient temperatures in the canonical ensemble until the full-dense condition is achieved. In the MD analysis, the inter-atomic interaction between metal nano-particles is modeled by the many-body EAM potential, and the interaction between frictionless rigid die-walls and metal...