Ocean Systems Engineering

Techno-Press (테크노프레스)
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A shell-dynamics model for marine pipelines of large suspended length

  • Katifeoglou, Stefanos A. (School of Naval Architects, Division of Marine Structures, National Technical University of Athens) ;
  • Chatjigeorgiou, Ioannis K. (School of Naval Architects, Division of Marine Structures, National Technical University of Athens)
  • Received : 2013.10.25
  • Accepted : 2015.12.02
  • Published : 2015.12.25
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Abstract

The present investigations introduce the shell-finite element discretization for the dynamics of slender marine pipelines. A long catenary pipeline, corresponding to a particular Steel Catenary Riser (SCR), is investigated under long-standing cyclic loading. The long structure is divided into smaller tubular parts which are discretized with 8-node planar shell elements. The transient analysis of each part is carried out by the implicit time integration scheme, within a Finite Elements (FE) solver. The time varying external loads and boundary conditions on each part are the results of a prior solution of an integrated line-dynamics model. The celebrated FE approximation can produce a more detailed stress distribution along the structural surface than the simplistic "line-dynamics" approach.

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References

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