TANKER STRUCTURAL ANALYSIS FOR MINOR COLLISIONS

In a study of the behavior of a longitudinally framed oil tanker structure during a minor collision in which the cargo tank remains intact, a plastic analysis procedure, based partly on model tests and inspections of collision damage, was developed and applied to a limited number of idealized ship collisions. The mathematical model of the analysis procedure follows the various phases of structural behavior of the struck ship occurring as a collision progresses--bending and stiffener buckling of the stiffened hull plating followed by membrane stretching, web frame failures, etc., up to hull rupture. Both single- and double-skinned ships were studied. Parametric analyses using the analytical procedure have indicated that most (typically between 2/3 and 9/10) of the energy absorbed during a collision is that of membrane tension in the stiffened hull. Other significant energy absorbed is that of memebrane tension in the stiffened deck and in-plane shearing of web frames.

• Supplemental Notes:
  • Presented at the SNAME Annual Meeting, New York, N.Y., Nov. 14-16, 1974.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • McDermott, J F
  • Kline, R G
  • Jones, E L
  • Maniar, N M
  • Chiang, W P
• Publication Date: 1974-11

Media Info

• Features: References;
• Pagination: 26 p.
• Serial:
  • Issue Number: 10

Subject/Index Terms

• TRT Terms: Crashes; Deflection; Deformation; Hulls; Loss and damage; Plastic analysis; Structural plates
• Old TRIS Terms: Hull stiffness; Membrane deformation; Plate deflections
• Subject Areas: Marine Transportation; Materials; Safety and Human Factors;

Filing Info

• Accession Number: 00071649
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: Nov 12 1974 12:00AM