PROBABILISTIC STRUCTURAL ANALYSIS OF SHIP HULL LONGITUDINAL STRENGTH

Existing probabilistic structural design methods are reviewed, their applicability to ship hull structural design considered and the most promising probabilistic analysis techniques are identified. The current state of knowledge concerning structural modes of failure and load distribution is considered with respect to its impact on probabilistic structural analyses. The emphasis is on longitudinal strength considerations. Factors influencing strength, in terms of uncertainties in ship strength distribution, are reviewed. Different methods are proposed to obtain coefficients of variation for various types of data on the uncertainties. Sample calculations are performed for a number of ships using an approximate probabilistic method and yielding safety margins for each. This method requires that only the coefficients of variation of the strength and load be known. A computer program is developed to perform this calculation for any ship subjected to any load or mode of failure.

• Corporate Authors:

  Rosenblatt (M) and Son, Incorporated

  350 Broadway
  New York, NY  United States  10013

  United States Coast Guard

  Office of Merchant Marine Safety
  Washington, DC  United States  20590

  Ship Structure Committee

  National Academy of Science, 2101 Constitution Avenue, NW
  Washington, DC  United States  20418
• Authors:
  • Daidola, J C
  • Basar, N S
• Publication Date: 1981

Media Info

• Features: References;
• Pagination: 88 p.

Subject/Index Terms

• TRT Terms: Computer programs; Failure; Hulls; Longitudinal strength; Strength of materials; Structural analysis; Structural design
• Identifier Terms: Ship Structure Committee
• Old TRIS Terms: Computer programs (Structural analysis); Failure mode; Hull failure; Hull strength; Hull structural analysis
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00334344
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: SSC-301
• Contract Numbers: DOT-CG-61908-A
• Files: TRIS
• Created Date: May 21 1981 12:00AM