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A study on the design and manufacturing of a deep-sea unmanned underwater vehicle based on structural reliability analysis

Authors
Joung, T. -H.Lee, J. -H.Nho, In-SikKim, Bong-JaeHan, Seung-HoPark, Seong-HwanLee, Chong-MooLee, Pan-MookSammut, KarlHe, Fangpo
Issue Date
2009
Publisher
TAYLOR & FRANCIS LTD
Keywords
reliability analysis; RSM (response surface method); AFOSM (advanced first-order second moment); limit tolerance; UUV (unmanned underwater vehicle); pressure vessel
Citation
SHIPS AND OFFSHORE STRUCTURES, v.4, no.1, pp 19 - 29
Pages
11
Journal Title
SHIPS AND OFFSHORE STRUCTURES
Volume
4
Number
1
Start Page
19
End Page
29
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/1324
DOI
10.1080/17445300802315367
ISSN
1744-5302
1754-212X
Abstract
The reliability analysis tool provided with the commercial structure-analysis package, ANSYS 9.0, is relatively easy to use and allows solutions to be rapidly obtained. However, the tool cannot guarantee the results of the reliability analysis since it can only provide an outline tendency of the probability of failure without giving an accurate numerical value of the probability of failure at the regions that a designer requires. The independent commercial reliability analysis code, NESSUSS 7.0, also has problems in that it may not necessarily converge and can waste computation time from having to undertake unnecessary repetitive structure analyses for design variables that have little significance to the structural integrity of the object being designed. A design methodology and a software module, which can make up for the current deficiencies in these commercial packages, have been developed by the authors and are presented in this paper. This paper describes how the methodology and the software module were applied to the design and manufacture of a stiffened pressure vessel, which can be mounted on a 6000 m class deep-sea unmanned underwater vehicle.
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