EXPERIMENTAL AND NUMERICAL DETERMINATION OF THE NONLINEAR OVERALL COLLAPSE OF IMPERFECT PRESSURE HULL COMPARTMENTS

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Authors
  1. Bosman, T.N.
  2. Pegg, N.G.
  3. Keuning, P.J.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Royal Netherlands Navy, Amsterdam (Netherlands)
Abstract
The increased capabilities and availability of nonlinear finite element codes allows their use for design against nonlinear structural collapse of submarine pressure hulls. Analysis can be undertaken on complete structural compartments including the effects of out-of-circularity, secondary structure and residual stresses. As a step towards adopting nonlinear finite element calculations in the design process, a joint Canada/Netherlands Navy project was undertaken to verify calculations of the overall collapse mode of pressure hull failure. A series of machined pressure hull models with enforced out-of-circularities and attached secondary deck structure were constructed, instrumented to measure bending and membrane strains and tested to failure. The strain results were compared to nonlinear finite element and equation-based solutions. This paper presents comparisons of numerical and experimental results of the effects of out-of-circularity on nonlinear overall collapse.
Keywords
Pressure hulls
Date of publication
01 Nov 1990
Number of Pages
8
DSTKIM No
94-00286
CANDIS No
136308
Format(s):
Document Image stored on Optical Disk;Originator's fiche received by DSIS

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