(Solved): A thin-walled pressure vessel of 60mm radius and 4mm thickness is made from spirally weld ...

A thin-walled pressure vessel of $60?\mathrm{mm}$ radius and $4?\mathrm{mm}$ thickness is made from spirally welded pipe and fitted with two rigid end plates. The vessel is subjected to an internal pressure of $p=2\mathrm{MPa}$ and a $\mathrm{P}=5\mathrm{kN}$ axial load. Calculate (a) the normal stress perpendicular to the weld and (b) the shearing stress parallel to the weld. [Answer: (a) ${?}_{x^{?}}=16.8\mathrm{MPa}$, (b) ${\mathrm{T}}_{x^{?}{\mathrm{y}}^{?}}=8.2\mathrm{MPa}$ ]