Research Article
Modeling and Investigation of the Velocity-Dependent Cutting Process with PDC Cutters Using the Discrete Element Method
Table 1
Calibrated microparameters of the DEM model.
| | Name | Symbol (unit) | Value |
| | Particle radius | () | 30075 | | Density | (kg/m³) | 2630 | | Elastic modulus | E (GPa) | 62 | | Ratio of normal to shear stiffness | (−) | 2.5 | | Coefficient of friction between particles | (−) | 0.7 | | Normal bond strength | (MPa) | 12525 | | Shear bond strength | (MPa) | 12525 | | Initial free-rolling angle | (°) | 0.250.05 | | Rolling resistance moment in the plastic phase | (Nm) | 33 |
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