27.07.2021 Views

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

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

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Appendix J: <strong>The</strong> Coefficient d2.<br />

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

Table J-1: d2 for hb/hi=1.<br />

hb/hi=1 32 º 37 º 42 º 47 º 52 º<br />

<br />

<br />

15 º 0.409 0.608 0.816 1.037 1.274<br />

18 º 0.312 0.528 0.754 0.995 1.255<br />

15 º<br />

21 º 0.205 0.436 0.680 0.939 1.220<br />

24 º 0.087 0.333 0.592 0.870 1.172<br />

27 º -0.040 0.219 0.493 0.788 1.110<br />

30 º -0.175 0.095 0.382 0.692 1.034<br />

15 º 0.474 0.642 0.828 1.035 1.269<br />

18 º 0.412 0.588 0.782 1.000 1.249<br />

30 º<br />

21 º 0.341 0.523 0.725 0.954 1.216<br />

24 º 0.261 0.447 0.657 0.895 1.169<br />

27 º 0.171 0.361 0.576 0.822 1.108<br />

30 º 0.071 0.264 0.483 0.735 1.031<br />

15 º 0.398 0.553 0.733 0.945 1.196<br />

18 º 0.325 0.481 0.664 0.879 1.138<br />

45 º<br />

21 º 0.241 0.396 0.579 0.797 1.061<br />

24 º 0.145 0.298 0.478 0.696 0.962<br />

27 º 0.037 0.183 0.358 0.572 0.836<br />

30 º -0.086 0.051 0.217 0.421 0.678<br />

15 º 0.195 0.317 0.465 0.650 0.885<br />

18 º 0.083 0.193 0.329 0.500 0.721<br />

60 º<br />

21 º -0.047 0.047 0.164 0.313 0.510<br />

24 º -0.198 -0.126 -0.036 0.081 0.238<br />

27 º -0.372 -0.331 -0.278 -0.208 -0.113<br />

30 º -0.575 -0.574 -0.573 -0.572 -0.570<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=1.<br />

Copyright © Dr.ir. S.A. Miedema TOC Page J-45 of 228

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!