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RESEARCH PAPERS

Stress Analysis of Nozzles in Cylindrical Vessels With External Load

[+] Author and Article Information
C. R. Steele

SHELLTECH; Stanford University, Stanford, Calif. 94305

M.-L. Steele

SHELLTECH, Stanford, Calif. 94305

J. Pressure Vessel Technol 105(3), 191-200 (Aug 01, 1983) (10 pages) doi:10.1115/1.3264264 History: Received April 22, 1983; Online November 05, 2009

Abstract

The analysis is carried out for a cylindrical vessel with a nozzle subjected to external loading consisting of longitudinal and circumferential moments and radial force. The Flügge-Conrad solutions with the Sanders-Simmonds concentrated force solution are utilized for a local analysis, to which asymptotic approximations for the effect of the vessel length and continuity around the vessel circumference are added. This is incorporated in a computer code FAST for which set up and run times are minimal for a given case of geometry and load. The comparison with experimental results is about as good as can be expected for eight models, with parameters in the ranges: 50 ≤ D /T ≤ 2530, 0.01 ≤ d /D ≤ 0.5, and 6.5 ≤ d /t ≤ 240. Hence, the calculation should be useful for an improvement in nozzle design. Example curves and tables of stress factors are included.

Copyright © 1983 by ASME
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