ANALYSIS OF SHIP STRUCTURAL LOADING IN A SEAWAY

The recent advent of the large tanker and bulk carrier has promoted the requirements for more detailed structural analysis of a ship and the reevaluation of theories for calculating the static, quasi-static and dynamic loads. The paper begins with discussion of the mode of failure of ship structural components and the methods available to determine the various types of loads expected, their phase relationship and ways of superimposing them. It then proceeds to the treatment of sea loads based on theoretical and experimental data and techniques of determining the ship response in a seaway are discussed. The response to regular waves is reviewed with special reference to the determination of pressure distribution on the hull. Statistical ship response, immediate and cumulative, over the life of the ship is demonstrated in relation to the prediction of long-term bending moment trends and the distribution of the extremes is discussed. Special loading conditions are described with special emphasis on the transverse pressure distribution, dynamic effects due to motion of liquid cargo in tanks, shipping of green water, wave-induced vibrations, slamming pressures and whipping stresses due to various causes. The paper treats the above subjects in a broad manner and no attempt to illustrate the theory in detail is made.

• Supplemental Notes:
  • Presented at Los Angeles Met. Section of the Society of Naval Architects and Marine Engineers.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Hoffman, D
• Publication Date: 1971-1

Subject/Index Terms

• TRT Terms: Bending moments; Hulls; Ship motion; Slamming; Sloshing; Structural analysis
• Old TRIS Terms: Hull bending moments; Ship response
• Subject Areas: Marine Transportation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00019644
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: Nov 25 1971 12:00AM