Question

If X is the circumferential stress and Y is the longitudinal stress with reference to a thin-walled pressure vessel, then which of the following is TRUE?

• A. Y = X/2
• B. X = Y/2
• C. Y = X/4
• D. X = Y/4

Answer 1

Answer:

A. Y = X/2

For a thin-walled pressure vessel, longitudinal stress (Y) and circumferential stress (X) are present. X is the hoop stress and Y is the axial stress. X = PD/2t and Y = PD/4t Thus, Y = X/2, making option 1 the correct answer.