STRUCTURAL ANALYSIS OF LONGITUDINALLY FRAMED SHIPS

The technique of finite elements has brought about a new era in the field of structural analysis of ship structures. The application of this technique, however, is limited by the cost and capacity of the computer. Straightforward appli- cations of the finite element method to the whole or to a major portion of the ship have so far been inaccurate and too expensive for design purposes. The method presented combines the advantages of the finite element technique and the uncoupling by coordinate transformation. A fine mesh may now be used to produce more accurate boundary conditions. The uncoupling transformations also reduce the computer time to about one-tenth of that by other methods. The critical assumptions and the basic theories have been verified with experimental test results from the tanker "JOHN A. MCCONE." This report discusses three computer programs; one for the longitudinal strength analysis, one for transverse strength analysis, and one for the local stability check of the structure. The programs themselves appear in subsequent reports.

• Corporate Authors:

  Ship Structure Committee

  National Academy of Science, 2101 Constitution Avenue, NW
  Washington, DC  United States  20418
• Authors:
  • Nielson, R
  • Chang, P Y
  • Deschamps, L C
• Publication Date: 1972-7

Media Info

• Features: References;
• Pagination: 60 p.

Subject/Index Terms

• TRT Terms: Finite element method; Longitudinal strength; Transverse strength
• Identifier Terms: Ship Structure Committee
• Uncontrolled Terms: Structural stability
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00040595
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: SSC-225
• Contract Numbers: N00024-70-C-5219
• Files: TRIS
• Created Date: Jan 5 1973 12:00AM