Structural Reinforcement of Viewports in Spherical Pressure Hull for Manned Submersibles

Manned submersibles are underwater vehicles. These vehicles are equipped with an atmospheric pressure casing called a spherical pressure hull, which can accommodate up to three people. The spherical pressure hull facilitates safe passage to high-pressure environments. It has circular openings that serve as viewports to enable underwater viewing and intervention. The regions near the openings are the weakest in the pressure hull and must be reinforced. Reinforcement of the viewports is performed using the area replacement method. The amount of material removed from the viewport opening must be replaced along the axis of symmetry of the opening. This is the minimum amount of material that must be placed along the circumference of the viewports. Reinforced viewports in the pressure hull are analyzed using finite element analysis, and the stresses are classified into primary and secondary stresses. The reinforcements of the viewports are carried out in such a way that the calculated primary and secondary stresses are below the permissible limits.

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    • Copyright © 2014 Marine Technology Society, Inc.
  • Authors:
    • Pranesh, Bhaskaran
    • Sathianarayanan, Dharmaraj
    • Ramesh, Sethuraman
    • Ramadass, Gidugu Ananada
  • Publication Date: 2014-5


  • English

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  • Accession Number: 01532423
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 29 2014 1:51PM