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5.9: Nomenclature

  • Page ID
    33736
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    Fh

    Horizontal cutting force

    kN

    Fv

    Vertical cutting force

    kN

    g

    Gravitational constant (9.81)

    m/s2

    G

    Gravitational force on the layer cut

    kN

    hi

    Initial thickness of layer cut

    m

    hb

    Height of blade

    m

    I

    Inertial force on the shear plane

    kN

    K1 

    Grain force on the shear plane

    kN

    K2 

    Grain force on the blade or the front of the wedge

    kN

    N1 

    Normal force on the shear plane

    kN

    N2 ​​​​​​​

    Normal force on the blade or the front of the wedge

    kN

    Pc

    Cutting power

    kW

    S1 ​​​​​​​

    Shear force due to friction on the shear plane

    kN

    S2 ​​​​​​​

    Shear force due to friction on the blade or the front of the wedge

    kN

    vc

    Cutting velocity component perpendicular to the blade

    m/s

    w

    Width of blade

    m

    W1 ​​​​​​​

    Force resulting from pore under pressure on the shear plane

    kN

    W​​​​​​​

    Force resulting from pore under pressure on the blade or on the front of the wedge

    kN

    α

    Cutting angle blade

    rad

    β

    Shear angle

    rad

    φ

    Angle of internal friction

    rad

    δ

    External friction angle

    rad

    ρs

    Density of the soil

    ton/m3

    ρw

    Density water

    ton/m3

    Screen Shot 2020-08-17 at 7.56.05 PM.png
    Figure 5-23: A bulldozer pushing sand (commons.wikimedia.org).

    5.9: Nomenclature is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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