Abstract
A theoretical elastic analysis has been carried out of the stresses due to a radial load applied to a pad reinforced nozzle in a spherical pressure vessel. Experiments have been carried out applying a radial load of 0·49 MN (50 tons) on one nozzle 0·51 m (16 in) outside diameter by 12·7 mm ( 1 2 in) thick in a spherical vessel 1 1·83 m (72 in) outside diameter by 12·7 mm ( 1 2 in) thick. The pad reinforcement was 9·5 mm ( 3 8 in) thick and of 0·216 m (8·5 in) radial width. The experimental results confirm the theoretical analysis for the distribution of stresses but the effect of the welds on the stresses at the shell intersections is significant.
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