Research Article
On the Shape Simulation of Aggregate and Cement Particles in a DEM System
Table 2
Shape indices of the regular polyhedra, appropriate proportions according to Guo [
11], and revised proportions for better overall simulation results.
| Shapes | Facet number | Sphericity | | Proportion by Guo [11] | Revised proportion |
| Tetrahedron | 4 | 0.67 | 7.21 | 10.0% | 5% | Pentahedron I | 5 | 0.70 | 6.95 | 12.5% | 5% | Pentahedron II | 5 | 0.72 | 6.71 | 12.5% | 5% | Hexahedron I (cube) | 6 | 0.81 | 6.00 | 17.5% | 10% | Hexahedron II | 6 | 0.76 | 6.39 | 17.5% | 10% | Heptahedron I | 7 | 0.83 | 5.83 | 10.0% | 15.5% | Heptahedron II | 7 | 0.80 | 6.06 | 10.0% | 15.5% | Octahedron I | 8 | 0.85 | 5.72 | 5.0% | 17% | Octahedron II | 8 | 0.78 | 6.24 | 5.0% | 17% | Sphere | | 1.00 | 4.84 | ā | ā |
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