Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Numerical Simulation on the Response of Moored Semi-submersible Under Ice Load

유빙 하중을 받는 계류된 반잠수식 시추선의 응답해석

  • Kim, Jeong-Hwan (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Kim, Yooil (Department of Naval Architecture and Ocean Engineering, Inha University)
  • 김정환 (인하대학교 조선해양공학과) ;
  • 김유일 (인하대학교 조선해양공학과)
  • Received : 2018.04.04
  • Accepted : 2018.06.18
  • Published : 2018.06.30
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Abstract

This study simulated ice load and the motion response of a moored semi-submersible rig in pack-ice conditions using a finite element method. Ice flows of random size and shape were modeled, and interactions for ice-sea, ice-structure, ice-ice were simulated using a simplified method. Parameters for the simplified method such as drag force coefficient and the pressure-penetration relation were obtained based on the result of detailed analysis using the coupled Eulerian-Lagrangian method. The mooring lines were modeled by spring elements based on their stiffness. As a result of the simulation over 1,400 seconds, the force and motion response of the rig were obtained and validated using discrete elements and compared with the results found by the Krylov State Research Centre.

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References

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