A DETERMINISTIC FATIGUE ANALYSIS FOR OFFSHORE PLATFORMS

As platforms are placed in deeper water, they will exhibit dynamic amplification of wave-induced response. The resulting dynamic loads will have a significant effect on the cyclic stresses used in a fatigue analysis. In this paper, an algorithm is developed for addressing the problems of dynamic response and fatigue. A multidegree-of-freedom, lumped-mass mathematical model is used to represent the structure, and finite-length, synthetic-wave profiles are used to represent various sea states making up a given location's environment. An example platform is analyzed. (AUTHOR)

• Corporate Authors:

  Society of Petroleum Engineers

  6200 North Central Expressway
  Dallas, TX  United States  75206
• Authors:
  • Maddox, N R
• Publication Date: 1975-7

Media Info

• Features: References;
• Pagination: p. 901-912
• Serial:
  • Journal of Petroleum Technology
  • Volume: 27
  • Publisher: Society of Petroleum Engineers

Subject/Index Terms

• TRT Terms: Fatigue tests; Force; Mathematical models; Offshore platforms; Structural analysis; Waves
• Old TRIS Terms: Wave forces on structures
• Subject Areas: Bridges and other structures; Design; Marine Transportation;

Filing Info

• Accession Number: 00125992
• Record Type: Publication
• Source Agency: National Maritime Research Center, Kings Point
• Files: TRIS
• Created Date: Oct 18 1975 12:00AM