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

The Delft Sand, Clay & Rock Cutting Model.
Horizontal Cutting Force Coefficient λ HD vs. Blade Angle α
40
Horizontal Cutting Force Coefficient λ HD (-)
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
φ=25°
φ=30°
φ=35°
φ=40°
φ=45°
φ=50°
0
15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Blade Angle α (Degrees)
© S.A.M.
Figure B-8: The horizontal cutting force coefficient λHD as a function of
the blade angle α for hb/hi=3.
Vertical Cutting Force Coefficient λ VD vs. Blade Angle α
15.0
12.5
φ=25°
Vertical Cutting Force Coefficient λ VD (-)
10.0
7.5
5.0
2.5
0.0
-2.5
-5.0
-7.5
-10.0
φ=30°
φ=35°
φ=40°
φ=45°
-12.5
φ=50°
-15.0
15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Blade Angle α (Degrees)
© S.A.M.
Figure B-9: The vertical cutting force coefficient λVD as a function of
the blade angle α for hb/hi=3.
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