Ocean Engineering Equipment and Technology ›› 2016, Vol. 3 ›› Issue (5): 287-291.

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 Effect of Buoyancy Modules’ Bending Stiffness Behavior on Flexible Riser in Shallow Water

 ZOU Ke, CHEN Jin-long, YUAN Zhen-qin   

  1.  State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Technology, Dalian, Liaoning 116024, China
  • Received:2016-09-30 Online:2016-10-25 Published:2017-08-15
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Abstract:  With the development of flexible pipe, the effect of bending stiffness of accessories and equipment on flexible riser has become current research focus. Based on 8 inch (1 inch ≈ 2.54 cm) flexible pipe, considering the nonlinear stiffness coupling buoyancy module with flexible pipe, we establish steep wave riser model in shallow water. Simulation is carried out using time domain analysis method in OrcaFlex software for flexible risers tension and curvature. The results are compared with another model ignoring the coupling bending stiffness. It is shown that the effect of bending stiffness is little on maximum tension result; however, the effect of bending stiffenss is more significant on the maximum curvature. More accurate results of riser configuration analysis can be obtained by considering the bending stiffness of buoyancy module riser.

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