Problem 326 A flanged bolt coupling consists of ten 20-mm-diameter bolts spaced evenly around a bolt circle 400 mm in diameter. Determine the torque capacity of the coupling if the allowable shearing stress in the bolts is 40 MPa.
Solution 326
$T = \frac{1}{4}\pi (20^2)(40)(200)(10)$
$T = 8\,000\,000\pi \, \text{N}\cdot\text{mm}$
$T = 8\pi \, \text{kN}\cdot\text{m} = 25.13 \, \text{ kN}\cdot\text{m}$ answer
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