A. Tafreshi et Te. Thorpe, EFFECTS OF LOCAL DEPARTURES FROM NOMINAL DIMENSIONS ON STRESSES IN THIN TORISPHERICAL END CLOSURES, Journal of strain analysis for engineering design, 31(4), 1996, pp. 315-324
A detailed survey (1-4)dagger of the variations in crown curvature, kn
uckle curvature and thickness of a number of thin torispherical pressu
re vessel ends has shown that actual dimensions may differ significant
ly from nominal dimensions. Numerical stress analysis using the finite
element method has been carried out to assess the effects of these sh
ape imperfections on the stresses in some of the thin torispherical pr
essure vessel ends considered in reference (4). The results have been
compared with those for the corresponding perfect ends. In several cas
es significant increases in stress levels are predicted due to thickne
ss and especially curvature variations.