THE APPLICATION OF STRUCTURAL RELIABILITY METHODS TO SUBMARINE PRESSURE VESSELS

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Authors
  1. Pegg, N.G.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Structural safety of Canadian Navy submarines has traditionally been evaluated through the requirements of British Standard BS5500 for pressure vessel design. The expansion of the deterministic design equations of BS5500 for interframe and overall compartment buckling collapse into limit state equations suitable for reliability analysis is investigated. Parametric studies of different random variables are undertaken, particularly out-of-circularity, diving depth and modelling uncertainty, which have a significant effect on the probability of failure. Results of a recent set of model tests for overall collapse are also used to evaluate the overall collapse limit state and point to possible difficulties in assessing modelling uncertainty and target safety values. Reliability methods prove to be a useful tool in pressure hull analysis but have not been develoed to the point where they could replace traditional methods.
Report Number
DREA-TM-95-223 — Technical Memorandum
Date of publication
01 Aug 1995
Number of Pages
36
DSTKIM No
95-03568
CANDIS No
153463
Format(s):
Document Image stored on Optical Disk;Hardcopy

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