The given system below, consisting of a rigid horizontal bar ABC and supported by three vertical rods, is stress free before the load P is applied. For the rod at B: diameter, d=26 mm; length, L = 4400 mm; E= 200 GPa; for the rods at A and C: d = 22mm; length, L = 2200 mm; E = 100 GPa. Find the stresses develop in each bar when P = 55 kN and the system

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Buckling of columns

The column is described as a vertical member of the structure that carries an axial compressive load, and buckling is a lateral deformation of the column under the application of load.