Stresses in ellipsoidal pressure vessel heads with noncentral nozzle

The objective of this paper is further investigation of the shell intersect ion problem. The shell theory and finite element method are used for stress analysis of nozzle connections in ellipsoidal heads of the pressure vessel s. Ellipsoidal heads having attached nozzles considerably displaced from th e head axis are mainly considered. The features of the numerical procedure, structural modeling of nozzle-head shell intersections and SAIS special-pu rpose computer program am discussed. The results of stress analysis and par ametric study of an ellipsoidal vessel head with a noncentral nozzle under internal pressure loading are presented. (C) 2000 Published by Elsevier Sci ence S.A. All rights reserved.