NUMERICALS ON THIN PRESSURE VESSELS

By: Praveen Kadian

A steel tube having a bore of 10 cm, wall thickness 1.5 mm is plugged at each end to form a closed cylinder with internal length of 300 mm. The tube is completely filled with oil and is subjected to a compressive load of 60 KN. Determine:

a) Pressure produced on oilb) Resulting circumferential stress in tube. Koil= 2800 N/mm2, Es= 210 Gpa, v= 0.28

Q. A steel pipe 30 cm in dia and 6 mm thick is subjected to a pressure of 2.8 Mpa. Estimate the hoop stress in the pipe under this pressure and also when wound, before stressing with wire 2.5 mm dia, carrying a tension of 70 Mpa. What is the stress in the wire when pipe is under pressure?

Es=210 Gpa, vs= 0.25