The Delft Sand, Clay & Rock Cutting Model, 2019a

The Delft Sand, Clay & Rock Cutting Model.
Modifications & Additions
Chapter 1: Added two photos of a clamshell and a backhoe.
Chapter 2.2: Added Soil Mechanics.
Chapter 2.3: Added Soils.
Chapter 2.4: Added Soil Mechanical Parameters.
Chapter 2.5: Added Criteria & Concepts.
Chapter 2.6: Added Soil Mechanical Tests.
Chapter 2.8: Modified the derivation of the Mohr circle. Added the force balance. Added graph with Mohr circles.
Chapter 2.9: Modified the derivation of active soil failure. Added many steps in derivation. Added photo of active
failure.
Chapter 2.10: Modified the derivation of passive soil failure. Added many steps in derivation. Added photo of
passive failure.
Chapter 3.6: Added photo of the snow plough effect.
Chapter 4.1: Added equations for dry sand cutting.
Chapter 4.2: Added equations for saturated sand cutting.
Chapter 4.3: Added equations for clay cutting.
Chapter 4.4: Added equations for atmospheric rock cutting.
Chapter 4.5: Added equations for hyperbaric rock cutting.
Chapter 5.7: Added a photo of dry sand cutting.
Chapter 5.9: Added a photo of dry sand cutting.
Chapter 6.8: Modified captions of Fig. 6-21, 6-22 and 6-23.
Chapter 6.11: Added approximation equations of all coefficients.
Chapter 6.12: Modified equation 6-93 to 6-95.
Chapter 6.12: Modified equation 6-96 and added equation 6-97.
Chapter 6.12: Modified equation 6-99.
Chapter 7.3: Added data of Abelev & Valent.
Chapter 7.7: Added graphs and Mohr circles.
Chapter 8.2: Added Cutting Process & Failure Criteria. Added some relations.
Chapter 8.2: Added Brittle versus Ductile.
Chapter 8.2: Added failure criteria based on UTS and UCS.
Chapter 8.2: Added failure criteria based on BTS and UCS.
Chapter 8.2: Added failure criteria based on Hoek & Brown.
Chapter 8.2: Added failure criteria based on parabolic envelope UTS and UCS.
Chapter 8.2: Added failure criteria based on ellipsoid envelope UTS and UCS.
Chapter 8.2: Added failure criteria based on linear failure criterion.
Chapter 8.2: Added the Griffith criterion.
Chapter 8.8: Added graphs transition brittle shear/brittle tensile.
Chapter 8.9: Added resulting forces & Mohr circles.
Chapter 8.10: Added example.
Chapter 9.2: Added specific energy graph.
Chapter 9.4: Added specific energy graph.
Chapter 9.5: Modified the vertical force coefficient graph.
Chapter 9.5: Added specific energy graph.
Chapter 9.7: Added example.
Chapter 10: Equations 10.1-10.14 The angle alpha is replaced by the angle teta.
Chapter 11: Equations 11.1-11.15 The angle alpha is replaced by the angle teta.
Chapter 12: Equations 12.1-12.10 The angle alpha is replaced by the angle teta.
Chapter 13: Equations 13.1-13.8 The angle alpha is replaced by the angle teta.
Chapter 14: Equations 14.1-14.6 The angle alpha is replaced by the angle teta.
Chapter 15: Equations 15.1-15.14 The angle alpha is replaced by the angle teta.
Chapter 16: Added Exercises.
Chapter 16.2: Added basic soil mechanics exercises.
Chapter 16.3: Added the general cutting process exercises.
Chapter 16.4: Added which cutting mechanism exercises.
Chapter 16.5: Added dry sand cutting exercises.
Chapter 16.6: Added water saturated sand cutting exercises.
Chapter 16.7: Added clay cutting exercises.
v