An extended incremental load method has been developed to derive the most probable failure path for continuous plated structures such as the assembly of stiffened rectangular and cylindrical cross-sections used in Tension Leg Platforms (TLPs) and Semi-Submersibles. The method allows for load redistribution as structural components strain beyond their maximum loads so that a system of elastoplastic moments develops in sufficient cross-sections to form a failure mechanism for the whole structural system under a variety of possible combined loads. Sensitivity studies show, for any given level of safety, the economic importance of reducing the uncertainties associated with component strength modeling and with post-ultimate behavior characteristics. The results of several such parametric studies lead to important conclusions relating to the adoption of a systems approach coupled also to component behavior for economic design, and for in-service reassessments of such structures.

  • Supplemental Notes:
    • Report; Paper No.8 presented at Royal Institution of Naval Architects Spring Meeting, April 19, 1989
  • Authors:
    • LEE, J S
  • Publication Date: 1989

Media Info

  • Features: References;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00660803
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM