The Delft Sand, Clay & Rock Cutting Model, 2019a

The Delft Sand, Clay & Rock Cutting Model.
See Appendix U: Specific Energy in Clay for more graphs on the specific energy in clay.
90
The Shear Angle β vs. The Blade Angle α
80
70
Shear Angle β (Degrees)
60
50
40
30
r=2.00
r=1.00
r=0.50
r=0.25
r=0.10
r=0.00
20
10
© S.A.M.
0
15 25 35 45 55 65 75 85 95 105 115 125 135 145 155 165 175
Blade Angle α (Degrees)
Figure 7-21: The shear angle as a function of the blade angle and the ac ratio r.
The Blade Angle α + The Shear Angle β vs. The Blade Angle α
180
170
160
Blade Angle α + Shear Angle β (Degrees)
150
140
130
120
110
100
90
80
70
60
50
40
30
r=2.00
r=1.00
r=0.50
r=0.25
r=0.10
r=0.00
20
10
© S.A.M.
0
15 25 35 45 55 65 75 85 95 105 115 125 135 145 155 165 175
Blade Angle α (Degrees)
Figure 7-22: The blade angle α + the shear angle β.
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