Discrete Element Simulation of Conical Pick’s Coal Cutting Process under Different Cutting Parameters

Figure 4

Dynamic coal cutting process of conical pick.

(a) Cutting state at the beginning position

(b) Particle velocity vector diagram at the beginning position

(c) Section of bonding diagram at the beginning position

(d) Cutting state at the middle position

(e) Particle velocity vector diagram at the middle position

(f) Section of bonding diagram at the middle position

(g) Cutting state at the end position

(h) Particle velocity vector diagram at the end position

(i) Section of bonding diagram at the end position