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Consider Example 3-9 of Shigley, 10th Edition—note that it is in U.S. Customary Units. Theshaft is made from 1020 cold-drawn steel (see Table A-20 for strength properties). Reworkthis problem completely, drawing out 3-D free-body diagram and the loading diagrams (Vy,Mz, Vz, My, and T = Mx. Construct another diagram for the resultant moment MR.Construct the Mohr’s circle sets at pulleys B and C for the maximum stress locations onthe shaft at each pulley. Remember there are three Mohr’s circles at a given point. Reorderthe three principal stresses and order them so that σ1 ≥ σ2 ≥ σ3. What is the maximumshear stress? What is the largest principal stress? Using the maximum shear stress theory(MSST), determine the factor of safety against yield.
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