Ocean Systems Engineering

  • 제5권2호
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  • Pages.77-89
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  • 2015
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

A finite element analysis for unbonded flexible risers under bending loads

  • Xiqia, Chen (Tianjin Branch, CNOOC Ltd.) ;
  • Shixiao, Fu (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Yun, Gao (State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University) ;
  • Xiaying, Du (Tianjin Branch, CNOOC Ltd.)
  • 투고 : 2015.03.24
  • 심사 : 2015.06.05
  • 발행 : 2015.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

As the exploitation of oil and gas resources advances into deeper waters and harsher environments, the design and analysis of the flexible risers has become the research focus in the offshore engineering filed. Due to the complexity of the components and the sliding between the adjacent layers, the bending response of the flexible risers is highly non-linear. This paper presents the finite element analysis of the flexible risers under bending loads. The detailed finite element model of the flexible riser is established in ABAQUS software. This finite element model incorporates all the fine details of the riser to accurately predict its nonlinear structural behavior. Based on the finite element model, the bending moment-curvature relationships of a flexible riser under various axisymmetric loads have been investigated. The results have been compared with the analytical ones obtained from the literature and good agreements have been found. Moreover, the stress of the tendon armors has been studied. The non-linear relationship between the armor tendons' stress and the bending loads has been obtained.

키워드

참고문헌

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