Cylindrical and spherical vessels are used in the engineering field to store and transport fluids. Such vessels are tanks, boilers, compressed air receivers, pipelines, etc. These vessels, when empty, are subjected to atmospheric pressure internally as well as externally and the resultant pressure on the walls of the shell is nil. But whenever a vessel is subjected to internal pressure(due to air, water, steam, etc.) its walls are subjected to tensile stresses THIN CYLINDERS A cylinder is considered thin when the ratio of its inner diameter to the wall thickness is more than 15. t/d <= d/10 to d/15 , it is called thin cylindrical shell. t = thickness of the shell, d =internal diameter of the shell. Boiler shells, pipes, tubes, and storage tanks are treated as a thin cylinder. In a thin cylindrical shell, hoops stress and longitudinal stresses are constant over the thickness and r...
mechanical engineer's journal