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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 c1.<br />

Table E-3: c1 for hb/hi=3.<br />

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

<br />

<br />

15 º 0.105 0.119 0.133 0.148 0.164<br />

18 º 0.120 0.135 0.152 0.169 0.188<br />

15 º<br />

21 º 0.135 0.152 0.171 0.192 0.214<br />

24 º 0.150 0.170 0.191 0.215 0.240<br />

27 º 0.165 0.188 0.212 0.239 0.268<br />

30 º 0.180 0.206 0.234 0.264 0.298<br />

15 º 0.185 0.215 0.247 0.282 0.322<br />

18 º 0.208 0.241 0.278 0.318 0.364<br />

30 º<br />

21 º 0.232 0.269 0.310 0.357 0.410<br />

24 º 0.256 0.298 0.345 0.398 0.459<br />

27 º 0.280 0.328 0.381 0.441 0.511<br />

30 º 0.306 0.359 0.419 0.488 0.569<br />

15 º 0.290 0.345 0.408 0.480 0.565<br />

18 º 0.324 0.386 0.457 0.541 0.640<br />

45 º<br />

21 º 0.359 0.429 0.511 0.607 0.722<br />

24 º 0.396 0.476 0.568 0.679 0.813<br />

27 º 0.436 0.525 0.631 0.758 0.914<br />

30 º 0.478 0.579 0.699 0.846 1.029<br />

15 º 0.439 0.538 0.657 0.802 0.983<br />

18 º 0.489 0.601 0.737 0.906 1.120<br />

60 º<br />

21 º 0.542 0.670 0.826 1.024 1.278<br />

24 º 0.599 0.744 0.926 1.157 1.461<br />

27 º 0.660 0.827 1.037 1.310 1.676<br />

30 º 0.728 0.918 1.163 1.487 1.933<br />

<strong>The</strong> dimensionless force c1in the direction of 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 E-27 of 228

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