고체역학 (Beer) — Pure Bending: Problem 4.97

4.97 The prismatic bar $AB$ is made of a bronze alloy for which the tensile stress-strain diagram is as shown. Assuming that the $\sigma-\epsilon$ diagram is the same in compression as in tension, determine (a) the maximum stress in the bar when the radius of curvature of the bar is 100 in., (b) the corresponding value of the bending moment. (See hint given in Prob. 4.96.)