SUMMARY REPORT OF THE CANADA/NETHERLANDS PROJECT ON DETERMINATION OF OVERALL COLLAPSE OF IMPERFECT PRESSURE HULL COMPARTMENTS

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Authors
  1. Pegg, N.G.
  2. Bosman, T.N.
  3. Keuning, P.J.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Royal Netherlands Navy, Amsterdam (Netherlands)
Abstract
In 1988, a cooperative working group was created under the auspices of the Canada/Netherlands IEP on Surface Ship and Submarine Design to look at several aspects of submarine structures research. One of the topics involved a series of model tests and numerical calculations for considering the overall pressure hull compartment mode of collapse. 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, the joint Canada/Netherlands Navy project undertook 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 tank top 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 sol utions. The model tests for this first phase of work were completed in 1992 and this report summarizes comparisons of numerical and experimental results of the effects of out-of-circularity and secondary tank top structure on nonlinear over all collapse.
Keywords
Pressure hulls;Membrane strains
Report Number
DREA-94-101 —
Date of publication
01 Mar 1994
Number of Pages
57
DSTKIM No
94-02651
CANDIS No
141433
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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