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4.7: Nomenclature

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    33421

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    a, \(\ \tau_\mathrm{a}\)

    Adhesion or external shear strength

    kPa

    A

    Adhesive force on the blade

    kN

    c, \(\ \tau_\mathrm{c}\)

    Cohesion or internal shear strength

    kPa

    cm

    Mobilized cohesion in case of Tear Type or Chip Type

    m

    C

    Force due to cohesion in the shear plane

    kN

    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

    hb,m

    Mobilized height of the blade in case Curling Type

    m

    I

    Inertial force on the shear plane

    kN

    K1

    Grain force on the shear plane

    kN

    K2

    Grain force on the blade

    kN

    N1

    		 Normal force on the shear plane

    kN

    N2

    		 Normal force on the blade

    kN

    R1

    		 Acting point forces on the shear plane

    m

    R2

    		 Acting point forces on the blade

    m

    R3

    		 Acting point gravity force

    m

    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 

    m/s

    w

    		 Width of blade

    m

    W1

    		 Force resulting from pore under pressure on the shear plane

    kN

    W2

    		 Force resulting from pore under pressure on the blade/ front wedge

    kN

    z

    Water depth

    m

    \(\ \alpha\)

    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

    ρl

    Density water

    ton/m3

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

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