(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An alloy steel shaft has an outside diameter of 100 mm. A central hole of 60 mm diameter is bored in part of its length as shown. Compute the shearing stress in the hollow section if the stress in the solid section is 200 MPa.

2. Relevant equations

angle = TL/GJ

t = torque

L = length of shaft

G = Shearing strain, megapascals

J = [piD^4/32] = 987477 - 1272345 = -284868 ? (this doesn't seem right)

3. The attempt at a solution

Above, and looking for some general direction on that attempt. My guess is to generate two formulas for the shaft out of the above formula, with one side of the formula including the unknown "G" shearing strain which is what we're looking for?

Or should the formula Tmax = Tc/J be used? (T= torque, c = radius, J = piD^4/32)

thanks

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# Computing stress in hollow shaft

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