Projects per year
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 threedimensional 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 interparticle 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 (fromto)  610624 
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
Projects
 1 Finished

Micromechanic modelling and analysis of the dynamics of nonspherical particles coupled with fluid flow
Australian Research Council (ARC)
30/06/14 → 28/09/17
Project: Research