A Steel rod 200 mm diameter is to be bent into a circular arc section. Find radius of curvature. Take f = 120N/mm2 & E = 2×105 N/mm2.

A Steel rod 200 mm diameter is to be bent into a circular arc section. Find radius of curvature. Take f = 120N/mm2 & E = 2×105 N/mm2. Correct Answer 166m

Diameter of Steel rod = 200mm; y = d/2 = 100mm. f= 120N/mm2. E= 2×105N/mm2. By flexural equation we have f/y = E/R R = 2×105/ 120 ×100 = 166.6m.
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