Academics – Applied Mechanics : 2017/JUL/03
Question
Q3. A welded pressure vessel of circular cross section has an oblique welded seam at an angle of 50° to the circumferential joint. The internal diameter of the pressure vessel is 2 m, the shell plate thickness is 25 mm and the working pressure is 30 bar.
Calculate EACH of the following:
(a) the tensile stress normal to the circumferential seam. (3)
(b) the tensile stress normal to the oblique seam. (7)
(c) the percentage increase in the stress normal to the oblique seam if internal corrosion leads to 8% reduction in shell thickness at the seam. (6)
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