lewis_factor¶
- property SpurGear.lewis_factor: float | None
Factor used to compute stresses on the gear tooth.
It is a tabular value that in general depends on the number of gear teeth and the pressure angle. In this case, the considered pressure angle is always 20 degrees, so the Lewis factor depends only on the number of gear teeth
n_teeth.Returns¶
floatFactor used to compute stresses on the gear tooth.
Lewis Factor Table¶
Number of teeth |
Lewis Factor |
|---|---|
10 |
0.201 |
11 |
0.226 |
12 |
0.245 |
13 |
0.264 |
14 |
0.276 |
15 |
0.289 |
16 |
0.295 |
17 |
0.302 |
18 |
0.308 |
19 |
0.314 |
20 |
0.320 |
21 |
0.325 |
22 |
0.330 |
24 |
0.337 |
26 |
0.344 |
28 |
0.352 |
30 |
0.358 |
32 |
0.364 |
34 |
0.370 |
36 |
0.377 |
38 |
0.383 |
40 |
0.389 |
43 |
0.394 |
45 |
0.399 |
50 |
0.408 |
55 |
0.415 |
60 |
0.421 |
65 |
0.425 |
70 |
0.429 |
75 |
0.433 |
80 |
0.436 |
90 |
0.442 |
100 |
0.446 |
150 |
0.458 |
200 |
0.463 |
300 |
0.471 |
400 |
0.478 |
500 |
0.484 |