Figure P9.17 shows a cast iron frame with a U-shaped cross section. The ultimate tensile s...

Figure P9.17 shows a cast iron frame with a U-shaped cross section. The ultimate tensile strength of the cast iron is σu = 320 MPa.

a. Determine the maximum value of P based on a factor of safety SF = 4.00, which is based on the ultimate strength.

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b. Neglecting the effect of stress concentrations at the fillet at the junction of the web and flange, determine the maximum radial stress when this load is applied.

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c. Is the maximum radial stress less than the maximum circumferential stress?

FIGURE P9.17