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

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

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<strong>The</strong> Coefficient d2.<br />

Table J-3: d2 for hb/hi=3.<br />

hb/hi=3 32 º 37 º 42 º 47 º 52 º<br />

<br />

<br />

15 º -0.552 -0.177 0.198 0.581 0.979<br />

18 º -0.921 -0.501 -0.080 0.350 0.800<br />

15 º<br />

21 º -1.306 -0.846 -0.384 0.092 0.590<br />

24 º -1.703 -1.208 -0.708 -0.191 0.353<br />

27 º -2.111 -1.586 -1.053 -0.498 0.090<br />

30 º -2.528 -1.979 -1.417 -0.828 -0.201<br />

15 º 0.020 0.263 0.522 0.805 1.118<br />

18 º -0.182 0.079 0.360 0.667 1.009<br />

30 º<br />

21 º -0.402 -0.124 0.176 0.505 0.873<br />

24 º -0.638 -0.346 -0.030 0.319 0.711<br />

27 º -0.890 -0.588 -0.259 0.107 0.521<br />

30 º -1.158 -0.850 -0.511 -0.132 0.301<br />

15 º 0.017 0.215 0.440 0.698 1.001<br />

18 º -0.171 0.034 0.267 0.537 0.856<br />

45 º<br />

21 º -0.379 -0.171 0.068 0.346 0.677<br />

24 º -0.608 -0.400 -0.160 0.122 0.460<br />

27 º -0.858 -0.656 -0.420 -0.141 0.199<br />

30 º -1.133 -0.941 -0.717 -0.447 -0.114<br />

15 º -0.221 -0.076 0.097 0.310 0.578<br />

18 º -0.455 -0.321 -0.159 0.042 0.298<br />

60 º<br />

21 º -0.718 -0.602 -0.460 -0.282 -0.052<br />

24 º -1.014 -0.925 -0.814 -0.673 -0.488<br />

27 º -1.349 -1.297 -1.231 -1.147 -1.034<br />

30 º -1.728 -1.727 -1.726 -1.724 -1.722<br />

<strong>The</strong> dimensionless force d2, perpendicular to the cutting velocity, as a function of the blade angle , the angle of<br />

internal friction , the soil/interface friction angle , for hb/hi=3.<br />

Copyright © Dr.ir. S.A. Miedema TOC Page J-47 of 228

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