Interparticle force analysis on the packing of fine ellipsoids

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)

Abstract

Particle size and shape are two important properties affecting the force structure in particle packings. By means of discrete element method, we investigate the force ratios, force network and force probability distribution in the three-dimensional packing of fine ellipsoids. The simulation results demonstrate that with particle size decreasing, the linear relationship between contact force ratio and bed depth fluctuates more significantly for ellipsoids. The force network for coarse particles demonstrates that the forces can propagate in long chains in the vertical direction for spheres; while they become more complex and zigzag for ellipsoids. Similar to spheres, exponential relationship also exists between porosity and inter-particle force ratio for ellipsoids, but it is also a function of particle shape. The probability distribution of contact force and total (normal) force are examined in details to quantify the force variation in the disordered packings of fine ellipsoidal particles.

Original languageEnglish
Pages (from-to)610-624
Number of pages15
JournalPowder Technology
Volume320
DOIs
Publication statusPublished - 1 Oct 2017

Keywords

  • Contact force
  • DEM
  • Fine ellipsoid
  • Force network
  • Packing

Cite this

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title = "Interparticle force analysis on the packing of fine ellipsoids",
abstract = "Particle size and shape are two important properties affecting the force structure in particle packings. By means of discrete element method, we investigate the force ratios, force network and force probability distribution in the three-dimensional packing of fine ellipsoids. The simulation results demonstrate that with particle size decreasing, the linear relationship between contact force ratio and bed depth fluctuates more significantly for ellipsoids. The force network for coarse particles demonstrates that the forces can propagate in long chains in the vertical direction for spheres; while they become more complex and zigzag for ellipsoids. Similar to spheres, exponential relationship also exists between porosity and inter-particle force ratio for ellipsoids, but it is also a function of particle shape. The probability distribution of contact force and total (normal) force are examined in details to quantify the force variation in the disordered packings of fine ellipsoidal particles.",
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Interparticle force analysis on the packing of fine ellipsoids. / Gan, J.Q.; Zhou, Z.Y.; Yu, A.B.

In: Powder Technology, Vol. 320, 01.10.2017, p. 610-624.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Interparticle force analysis on the packing of fine ellipsoids

AU - Gan, J.Q.

AU - Zhou, Z.Y.

AU - Yu, A.B.

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N2 - Particle size and shape are two important properties affecting the force structure in particle packings. By means of discrete element method, we investigate the force ratios, force network and force probability distribution in the three-dimensional packing of fine ellipsoids. The simulation results demonstrate that with particle size decreasing, the linear relationship between contact force ratio and bed depth fluctuates more significantly for ellipsoids. The force network for coarse particles demonstrates that the forces can propagate in long chains in the vertical direction for spheres; while they become more complex and zigzag for ellipsoids. Similar to spheres, exponential relationship also exists between porosity and inter-particle force ratio for ellipsoids, but it is also a function of particle shape. The probability distribution of contact force and total (normal) force are examined in details to quantify the force variation in the disordered packings of fine ellipsoidal particles.

AB - Particle size and shape are two important properties affecting the force structure in particle packings. By means of discrete element method, we investigate the force ratios, force network and force probability distribution in the three-dimensional packing of fine ellipsoids. The simulation results demonstrate that with particle size decreasing, the linear relationship between contact force ratio and bed depth fluctuates more significantly for ellipsoids. The force network for coarse particles demonstrates that the forces can propagate in long chains in the vertical direction for spheres; while they become more complex and zigzag for ellipsoids. Similar to spheres, exponential relationship also exists between porosity and inter-particle force ratio for ellipsoids, but it is also a function of particle shape. The probability distribution of contact force and total (normal) force are examined in details to quantify the force variation in the disordered packings of fine ellipsoidal particles.

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