14.4: Nomenclature
- Page ID
- 29376
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a, \(\ \tau_\mathrm{a}\) |
Adhesion or adhesive shear strength. |
kPa |
A |
Adhesive shear force on the blade. |
kN |
c, \(\ \tau_\mathrm{c}\) |
Cohesion or cohesive shear strength. |
kPa |
C1 |
Cohesive shear force on the shear plane. |
kN |
C2 |
Cohesive shear force on the pseudo blade (front of the wedge). |
kN |
C3 |
Cohesive shear force on bottom of the wedge. |
kN |
Fh |
Horizontal cutting force. |
kN |
Fv |
Vertical cutting force. |
kN |
G1 |
Weight of the layer cut. |
kN |
G2 |
Weight of the wedge. |
kN |
hb |
Blade height. |
m |
hi |
Layer thickness. |
m |
I |
Inertial force on the shear plane. |
kN |
N1 |
Normal force on the shear plane. |
kN |
N2 |
Normal force on the pseudo blade (front of the wedge). |
kN |
N3 |
Normal force on bottom of the wedge. |
kN |
N4 |
Normal force on the blade. |
kN |
K1 |
Sum of N1 and S1 on the shear plane. |
kN |
K2 |
Sum of N2 and S2 on the pseudo blade (front of the wedge). |
kN |
K3 |
Sum of N3 and S3 on bottom of the wedge. |
kN |
K4 |
Sum of N4 and S4 on the blade. |
kN |
L1 |
Length of the shear plane. |
m |
L2 |
Length of the pseudo blade (front of the wedge). |
m |
L3 |
Length of the bottom of the wedge. |
m |
L4 |
Length of the blade. |
m |
L5 |
Length of the line from the tip of the blade to the opposite side of the wedge and perpendicular to this side. |
m |
L6 |
Length of the line from point A to the intersection point of the previous line with side A-C. |
m |
L7 |
Distance from the acting point of the pore pressure force on side A-C to the intersection point of the previous line L6 with side A-C. |
m |
R1 |
Acting point forces on the shear plane. |
m |
R2 |
Acting point forces on the pseudo blade (front of the wedge). |
m |
R3 |
Acting point forces on the bottom of the wedge. |
m |
R4 |
Acting point forces on the blade. |
m |
S1 |
Shear (friction) force on the shear plane. |
kN |
S2 |
Shear (friction) force on the pseudo blade (front of the wedge). |
kN |
S3 |
Shear (friction) force on the bottom of the wedge. |
kN |
S4 |
Shear (friction) force on the blade. |
kN |
W1 |
Pore pressure force on the shear plane. |
kN |
W2 |
Pore pressure force on the pseudo blade (front of the wedge). |
kN |
W3 |
Pore pressure force on the bottom of the wedge. |
kN |
W4 |
Pore pressure force on the blade. |
kN |
vc |
Cutting velocity. |
m/sec |
α |
Blade angle. |
° |
β |
Shear angle. |
° |
θ |
Wedge angle. |
° |
φ |
Internal friction angle. |
° |
δ |
External friction angle. |
° |
λ |
Internal friction angle on pseudo blade. |
° |