A spherical tank of diameter 1.2 m and wall thickness 50 mm contains compressed air at a pressure of 17 MPa. The tank is constructed of two hemispheres joined by a welded seam as shown in the figure.
a) What is the tensile load f (N per m length of the weld) carried by the weld?
b) What is the maximum shear stress τmax in the wall of the tank?
What is the maximum normal strain ε in the wall? (assume E = 210 GPa, v = 0.29)