Packing of different shaped tetrahedral particles

DEM simulation and experimental study

Bo Zhao, Xizhong An, Yang Wang, Haiyang Zhao, Lingling Shen, Xudong Sun, Ruiping Zou

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Packings of different mono-sized tetrahedral particles under 3D vibrations were studied by physical experiments and DEM simulations. The effects of vibration conditions and particle shape on the packing densification were comprehensively investigated and optimized. Corresponding characteristic microscopic properties such as coordination number (CN), particle contact type, radial distribution function (RDF), and particle orientations were numerically characterized and analyzed. The results show that the DEM model can be well validated by physical experiments. Microscopic analysis indicates that the minimum mean CN appears for tetrahedral particles with regular shape. The RDF shows that as the shape deviates from regular tetrahedral particles, the frequency of face-face, vertex-face and edge-edge contacts all decreases while that of edge-face contact increases. The cluster evolutions demonstrate that the reduction or disappearance of two important local clusters (dimer and wagon wheel structures) is one of the main reasons for the decrease of packing density of irregular tetrahedral particles.

Original languageEnglish
Pages (from-to)21-32
Number of pages12
JournalPowder Technology
Volume360
DOIs
Publication statusPublished - 15 Jan 2020

Keywords

  • 3D vibration
  • DEM simulation
  • Densification
  • Packing of tetrahedral particles
  • Physical experiments
  • Structure characterization

Cite this

Zhao, Bo ; An, Xizhong ; Wang, Yang ; Zhao, Haiyang ; Shen, Lingling ; Sun, Xudong ; Zou, Ruiping. / Packing of different shaped tetrahedral particles : DEM simulation and experimental study. In: Powder Technology. 2020 ; Vol. 360. pp. 21-32.
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abstract = "Packings of different mono-sized tetrahedral particles under 3D vibrations were studied by physical experiments and DEM simulations. The effects of vibration conditions and particle shape on the packing densification were comprehensively investigated and optimized. Corresponding characteristic microscopic properties such as coordination number (CN), particle contact type, radial distribution function (RDF), and particle orientations were numerically characterized and analyzed. The results show that the DEM model can be well validated by physical experiments. Microscopic analysis indicates that the minimum mean CN appears for tetrahedral particles with regular shape. The RDF shows that as the shape deviates from regular tetrahedral particles, the frequency of face-face, vertex-face and edge-edge contacts all decreases while that of edge-face contact increases. The cluster evolutions demonstrate that the reduction or disappearance of two important local clusters (dimer and wagon wheel structures) is one of the main reasons for the decrease of packing density of irregular tetrahedral particles.",
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Packing of different shaped tetrahedral particles : DEM simulation and experimental study. / Zhao, Bo; An, Xizhong; Wang, Yang; Zhao, Haiyang; Shen, Lingling; Sun, Xudong; Zou, Ruiping.

In: Powder Technology, Vol. 360, 15.01.2020, p. 21-32.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Zhao, Bo

AU - An, Xizhong

AU - Wang, Yang

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AU - Zou, Ruiping

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