Assume that the dimensions of the angle section of the pinned-end column shown in Figure 1...

Assume that the dimensions of the angle section of the pinned-end column shown in Figure 12.11 ate t = 0.635 mm, b = 12.0 mm, and L = 559 mm. Show by Figure 12.11 that the column fails as a unit by elastic buckling (not local buck-ling). Calculate the average stress in the column at the buckling load and compare it to the stress obtained experimentally (Figure 12.11).

FIGURE 12.11 Buckling loads for local buckling and Euler buckling for columns made of 245 TR aluminum (E = 74.5 GPa).