15.1: Introduction

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For completeness of the overview the equations for the cutting of the wedge mechanism for hyperbaric rock are given here without further explanation.

Screen Shot 2020-08-27 at 3.43.58 PM.png — Figure 15-1: Definitions.

Definitions:

A: The wedge tip.
B: End of the shear plane.
C: The blade top
D: The blade tip.
A-B: The shear plane.
A-C: The wedge surface.
A-D: The wedge bottom.
D-C: The blade surface.
h_b: The height of the blade.
h_i: The thickness of the layer cut.
v_c: The cutting velocity.
α: The blade angle.
β: The shear angle.
F_h: The horizontal force, the arrow gives the positive direction.
F_v: The vertical force, the arrow gives the positive direction.