### 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 language | English |
---|---|

Pages (from-to) | 610-624 |

Number of pages | 15 |

Journal | Powder Technology |

Volume | 320 |

DOIs | |

Publication status | Published - 1 Oct 2017 |

### Keywords

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

### Cite this

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**Interparticle force analysis on the packing of fine ellipsoids.** / Gan, J.Q.; Zhou, Z.Y.; Yu, A.B.

Research output: Contribution to journal › Article › Research › peer-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.

PY - 2017/10/1

Y1 - 2017/10/1

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.

KW - Contact force

KW - DEM

KW - Fine ellipsoid

KW - Force network

KW - Packing

UR - http://www.scopus.com/inward/record.url?scp=85026733282&partnerID=8YFLogxK

U2 - 10.1016/j.powtec.2017.07.064

DO - 10.1016/j.powtec.2017.07.064

M3 - Article

VL - 320

SP - 610

EP - 624

JO - Powder Technology

JF - Powder Technology

SN - 0032-5910

ER -