9 Contact Stresses
9 Contact Stresses
9 Contact Stresses
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TABLE 9-5 CONTACT STRESSES BETWEEN TWO LONG CYLINDRICAL<br />
BODIES IN LINE CONTACT SLIDING AGAINST EACH OTHER a<br />
Notation<br />
2b = width of contact area, Eq. (9.18a)<br />
µ = friction coefficient<br />
= see Eq. (9.18b)<br />
q = distributed (line) load (F/L)<br />
Maximum Stress µ = 0 µ = 1 12 µ = 1 6 µ = 1 3<br />
Maximum tensile principal<br />
stress, occurs near the<br />
surface at x =−b<br />
Maximum compressive<br />
principal stress, occurs<br />
near the surface between<br />
x = 0andx = 0.3b<br />
Maximum shear stress<br />
(occurs at the surface<br />
for µ ≥ 1 10 )<br />
Maximum octahedral<br />
shear stress (occurs at the<br />
surface for µ ≥ 1 10 )<br />
a Adapted from [9.9], with permission.<br />
0<br />
2<br />
12 b <br />
2 6 b <br />
2 3 b <br />
− b −1.09 b −1.19 b −1.40 b <br />
0.300 b 0.308 b 0.339 b 0.435 b <br />
0.272 b 0.265 b 0.277 b 0.368 b <br />
TABLE 9-5 <strong>Contact</strong> <strong>Stresses</strong> between Two Long Cylindrical Bodies 449
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