Special Issue of the Society of Naval Architects of Korea (대한조선학회 특별논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Fatigue analysis of helideck structures

헬리데크 구조물의 피로해석

  • Jeon, Sangik (Central R&D Institute, Samsung Heavy industries) ;
  • Oh, Simkwan (Central R&D Institute, Samsung Heavy industries) ;
  • Roh, Jisun (Central R&D Institute, Samsung Heavy industries) ;
  • Kim, Bongjae (Central R&D Institute, Samsung Heavy industries) ;
  • Jang, Kibok (Central R&D Institute, Samsung Heavy industries)
  • 전상익 (삼성중공업 중앙연구소) ;
  • 오심관 (삼성중공업 중앙연구소) ;
  • 노지선 (삼성중공업 중앙연구소) ;
  • 김봉재 (삼성중공업 중앙연구소) ;
  • 장기복 (삼성중공업 중앙연구소)
  • Published : 2015.09.30
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Abstract

This paper presents fatigue analysis of helideck structures located in FPSO. After FPSO is moved to the target position where production of resource is performed, FPSO stays at the target position and performs production of resource, storage and off-loading during the design life. Helideck structure is located in FPSO essentially for the movement of personnel and life rescue at emergency situations by using helicopters. Because inertial load induced by FPSO motion and landing and taking-off load of helicopter occur at helideck structures cyclically, helideck structures should be designed to withstand fatigue loads. Therefore, The fatigue assessment of helideck structures should be performed with fatigue loads. Effect of stress concentration due to misalignment between welded plates is considered in fatigue assessment additionally.

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