고체역학 (Beer) — Shearing Stresses in Beams: Problem 6.85

*6.85 The cantilever beam AB, consisting of half of a thin-walled pipe of 1.25-in. mean radius and 3/8-in. wall thickness, is subjected to a 500-lb vertical load. Knowing that the line of action of the load passes through the centroid C of the cross section of the beam, determine (a) the equivalent force-couple system at the shear center O of the cross section, (b) the maximum shearing stress in the beam. (Hint: The shear center O of this cross section was shown in Prob. 6.74 to be located twice as far from its vertical diameter as its centroid C.)