Buckling of near-perfect steel torispherical and hemispherical shells subjected to external pressure

Tests have been conducted on externally pressurized machined steel-domed ends to verify (1) the predicted variation of a dome's buckling resistance with knuckle radius-to-diameter ratio, and (2) the conjecture that dome geometry optimization while maintaining constant weight can yield substanti...

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Bibliographic Details
Published in:AIAA journal 1990-11, Vol.28 (11), p.1971-1975
Main Authors: Blachut, J, Galletly, G. D, Moreton, D. N
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical engineering. Machine design
Steel design
Steel tanks and pressure vessels
boiler manufacturing
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Summary:Tests have been conducted on externally pressurized machined steel-domed ends to verify (1) the predicted variation of a dome's buckling resistance with knuckle radius-to-diameter ratio, and (2) the conjecture that dome geometry optimization while maintaining constant weight can yield substantial buckling strength increases. The theoretically projected initial buckling strength increase, its reversal, the minimum buckling strength, and the rapid strength increase thereafter, are all confirmed. It is also established that optimization of dome shape can yield a substantial strength enhancement. The good agreement obtained between test results and theoretical predictions underscores the usefulness of the BOSOR 5 shell-buckling program. (O.C.)
ISSN:0001-1452
1533-385X
DOI:10.2514/3.10506