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Home / Cutting of Sand, Clay and Rock / The Cutting of Sand /

    10-The Cutting of Water Saturated Sand Dissertation Miedema (2112)

The Cutting of Water Saturated Sand

In the first phase a fundamental model of cutting forces based on minimising the specific cutting energy is derived. The cutting process in sand saturated with water is dominated by the phenomena of dilatation. In consequence of the dilatation, water underpressures are generated in the sand and, with large strain rates these can reach saturated water vapour pressure, in which case cavitation occurs. Cavitating and non-cavitating cutting processes can be distinguished although an intermediate transition zone between these also occurs. The effects of inertial forces, water resistance, gravity, adhesion and cohesion are included in this two-dimensional theory.

Reference:

Miedema, S.A., "Calculation of the Cutting Forces when Cutting Water Saturated Sand". Basic Theory and Applications for 3-D Blade Movements and Periodically Varying Velocities for, in Dredging Commonly used Excavating Means. Ph.D. Thesis, Delft University of Technology, September 15th 1987.



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