Numerical Simulation of Fragment Separation during Rock Cutting Using a 3D Dynamic Finite Element Analysis Code

Figure 4

The cutting process of the rock for a cutting depth of 9 mm, a cutter speed of 3 m/s, and sandstone-1: (a) initial crack generation at 0.01318 s, (b) crack propagation at 0.1344 s, (c) crack connection at 0.01370 s, (d) fragment separation from the base rock at 0.1472 s, (e) cutting result at 0.02667 s, and (f) variation in the cutting force.

(a)

(b)

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(f)