Ocean Systems Engineering

  • 제6권4호
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  • Pages.345-362
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  • 2016
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
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Numerical simulation of dynamic Interactions of an arctic spar with drifting level ice

  • Jang, H.K. (Department of Ocean Engineering, Texas A&M University) ;
  • Kang, H.Y. (Department of Ocean Engineering, Texas A&M University) ;
  • Kim, M.H. (Department of Ocean Engineering, Texas A&M University)
  • 투고 : 2016.08.19
  • 심사 : 2016.10.20
  • 발행 : 2016.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study aims to develop the numerical method to estimate level ice impact load and investigate the dynamic interaction between an arctic Spar with sloped surface and drifting level ice. When the level ice approaches the downward sloped structure, the interaction can be decomposed into three sequential phases: the breaking phase, when ice contacts the structure and is bent by bending moment; the rotating phase, when the broken ice is submerged and rotated underneath the structure; and the sliding phase, when the submerged broken ice becomes parallel to the sloping surface causing buoyancy-induced fictional forces. In each phase, the analytical formulas are constructed to account for the relevant physics and the results are compared to other existing methods or standards. The time-dependent ice load is coupled with hull-riser-mooring coupled dynamic analysis program. Then, the fully coupled program is applied to a moored arctic Spar with sloped surface with drifting level ice. The occurrence of dynamic resonance between ice load and spar motion causing large mooring tension is demonstrated.

키워드

참고문헌

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피인용 문헌

  1. Time-Domain Hydro-Elastic Analysis of a SFT (Submerged Floating Tunnel) with Mooring Lines under Extreme Wave and Seismic Excitations vol.8, pp.12, 2018, https://doi.org/10.3390/app8122386
  2. Kulluk-shaped arctic floating platform interacting with drifting level ice by discrete element method vol.236, pp.None, 2016, https://doi.org/10.1016/j.oceaneng.2021.109479