vessels

[logistic_guy]

Consider two pressurized vessels of cylindrical and spherical shapes of mean radius \(\displaystyle r = 150 \ \text{mm}\), constructed of \(\displaystyle 6\)-\(\displaystyle \text{mm}\)-thick plastic material. Find the limiting value of the pressure differential the shells can resist given a maximum stress of \(\displaystyle 15 \ \text{MPa}\).