THE EFFECTS OF VARYING SHIP HULL PROPORTIONS AND HULL MATERIALS ON HULL FLEXIBLITY, BENDING AND VIBRATORY STRESSES

The effect of varying ship proportions and hull materials on hull flexibility and on the concomitant bending and vibratory stresses for an ore carrier, a tanker, containership, and a general cargo ship is evaluated. With the flexibilty of the ship's hull represented by the natural frequency of the ship associated with the two-node shape, a potentially useful relation between the flexibility and bending moment has been established. An analysis indicates that forward speed affects hydrodynamic damping and forces as well as hull flexibility, and there may exist an optimal flexibility for every ship, but there is not necessarily a limit to the flexibility.

• Supplemental Notes:
  • See also Report No. SSC-249 (June 1974), AD-A008388.
• Corporate Authors:

  Hydronautics, Incorporated

  7210 Pindel School Road
  Laurel, MD  United States  20810

  Ship Structure Committee

  National Academy of Science, 2101 Constitution Avenue, NW
  Washington, DC  United States  20418
• Authors:
  • Chang, P Y
• Publication Date: 1979-4

Media Info

• Features: References;
• Pagination: 68 p.

Subject/Index Terms

• TRT Terms: Bending moments; Force; Hulls; Hydrodynamic pressure; Ship motion; State of the art; Stresses; Vibration; Waves
• Identifier Terms: Ship Structure Committee
• Old TRIS Terms: Hull bending moments; Hull forces; Hull response; Hull stress; Hull vibration; Hydrodynamic forces; Springing; Wave forces on structures
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00300796
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SSC-288 Final Rpt., 7715-1
• Contract Numbers: DOT-CG-61906-A
• Files: TRIS
• Created Date: Oct 17 1979 12:00AM