Research Article
Discrete Element Simulation of Conical Pick’s Coal Cutting Process under Different Cutting Parameters
Table 2
The parameters of contact properties of coal and steel.
| Materials parameters | Coefficient of restitution | Coefficient of static friction | Coefficient of rolling friction |
| Coal to coal | 0.5 | 0.6 | 0.05 | Coal to steel | 0.5 | 0.4 | 0.05 | Steel to steel | 0.7 | 0.2 | 0.01 |
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