Abstract

In this paper, unsettled technical controversies concerning about fatigue strength analysis for FPSO, one of the representative floaters, associated with welding types, screening methods, fabrication tolerances, corrosion margins and Morison loads are described based on yard practices. Basic theory for stochastic fatigue analysis is introduced as detail as possible. In order to resolve large parts of the controversies, a new fully stochastic fatigue analysis program for FPSO is developed.

Keywords

• Fully stochastic fatigue analysis;
• Component based fatigue analysis;
• Offshore floaters;
• FPSO;
• Sea state;
• Spectrum combination;
• PJP;
• Screening;
• Fabrication tolerance;
• Morison load

• 완전 통계적 피로해석;
• 하중성분법 피로해석;
• 부유식 해양구조물;
• 해상상태;
• 스펙트럼 조합;
• 완전용입용접;
• 스크리닝;
• 제작공차;
• 모리슨 하중;