Finite Element Analysis and Development of Design Charts for Cylindrical Vessel–Nozzle Junctures Under Internal Pressure

• Published in: Arabian Journal for Science and Engineering Vol. 41; no. 10; pp. 4195 - 4206
• Main Authors: Mukhtar, F. M., Al-Gahtani, H. J.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2016; Springer Nature B.V
• Subjects: Charts; Design analysis; Design engineering; Engineering; Finite element method; Humanities and Social Sciences; Mathematical analysis; Mathematical models; multidisciplinary; Nozzles; Research Article - Civil Engineering; Science; Stress concentration; Thin walled shells; Nozzle on cylindrical vessel; Stress concentration factor; Discontinuity analysis; Finite element analysis; Thin shell theory; Internal pressure
• ISSN: 1319-8025; 2191-4281
• DOI: 10.1007/s13369-016-2155-x

A detailed study for the stresses around internally pressurized cylindrical vessel–cylindrical nozzle junctures is carried out using the finite element method. Based on thin shell theory, two simplified expressions (functions of the vessel–nozzle geometrical ratios) of stress concentration factor (SCF) are obtained: one for the main vessel and the other for the nozzle, respectively. The analysis was also used to study the location of maximum stresses at the juncture as well as provide a more accurate presentation of design charts than the ρ -SCF plots. Verification is made using some established models available in the literature.