Ocean Systems Engineering

  • 제3권2호
  • /
  • Pages.97-122
  • /
  • 2013
  • /
  • 2093-6702(pISSN)
  • /
  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Stress analysis model for un-bonded umbilical cables

  • Chen, Xiqia (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Fu, Shixiao (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Song, Leijian (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Zhong, Qian (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University) ;
  • Huang, Xiaoping (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University)
  • 투고 : 2013.04.18
  • 심사 : 2013.06.10
  • 발행 : 2013.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

For the optimization design and strength evaluation of the umbilical cable, the calculation of cross section stress is of great importance and very time consuming. To calculate the cross section stress under combined tension and bending loads, a new integrated analytical model of umbilical cable is presented in this paper. Based on the Hook's law, the axial strain of helical components serves as the tensile stress. Considering the effects of friction between helical components, the bending stress is divided into elastic bending stress and friction stress. For the former, the elastic bending stress, the curvature of helical components is deduced; and for the latter, the shear stress before and after the slipping of helical components is determined. This new analytical model is validated by the experimental results of an umbilical cable. Further, this model is applied to estimate the extreme strength and fatigue life of the umbilical cable used in South China Sea.

키워드

참고문헌

  1. Costello, G.A. (1997), Theory of Wire Rope (2th Ed), Springer, New York, USA.
  2. DNV-OS-F101(2005), Submarine Pipe Systems.
  3. DNV-RP-C203 (2010), Fatigue Design of Offshore Steel Structures.
  4. Ekeberg, K.I., Ottesen, T., Aarstein, J., Nexans Norway A/S, Saevik, S., Ye, N. and Marintek, R.I. (2006), "Measuring and implementing friction and bending stresses in dynamic umbilical design", Proceedings of the Offshore Technology Conference, Houston, May.
  5. Feret, J. and Bournazel, C.L. (1987), "Calculation of stress and slip in structural layers of un-bonded flexible pipes", J. Offshore Mech. Arct., 109 (1), 263-269. https://doi.org/10.1115/1.3257019
  6. ISO 13628-5 (2005), Design and Operation of Subsea Production Systems-Subsea Umbilicals.
  7. Knapp, R.H. (1979), "Derivation of a new stiffness matrix for helically armored cables considering tension and torsion", Int. J. Numer. Meth. Eng., 14 (4), 515-529. https://doi.org/10.1002/nme.1620140405
  8. Knapp, R.H. (2004), "Tension and bending fatigue modeling of cables", Proceedings of the 14th International Offshore and Polar Engineering Conference, Toulon, France, May.
  9. Lipschutz, M.M. (1969), Differential Geometry, McGraw-Hill, New York.
  10. Martins, C.A. and Pesce, C.P. (2002), "A simplified procedure to assess the fatigue-life of flexible risers", Proceedings of the 12th International Offshore and Polar Engineering Conference, Kitakushu, Japan, May.
  11. OrcaFlex Manual (2006), Version 9.0a, Orcina Ltd, U.K.
  12. Seavik, S. (2011), "Theoretical and experimental studies of stresses in flexible pipes", Appl. Ocean Res., 27(2), 97-106.
  13. Socie, D. (1991), Rainflow cycle counting: a historical perspective, Butterworth-Heinemann, Oxford, U.K.
  14. Thies, P.R., Johanning, L. and Smith, G.H. (2011), "Assessing mechanical loading regimes and fatigue life of marine power cables in marine energy applications", Proceedings of the IMechE, Part O: J Risk and Reliability, 226(1), 18-32.
  15. Witz, J. and Tan, Z. (1995), "Rotary bending of marine cables and umbilicals", Eng. Struct., 17(4), 267-275. https://doi.org/10.1016/0141-0296(95)00025-3
  16. Witz, J.A. and Tan, Z. (1996), "On the axial-torsional structural behaviour of flexible pipes, umbilicals and cables", Mar. Struct., 9(2 -3), 205-227.
  17. Witz, J.A. and Tan, Z. (1996), "On the flexural structural behaviour of flexible pipes, umbilicals and marine cables", Mar. Struct., 9(2- 3), 229-249.

피인용 문헌

  1. Cross-section of subsea umbilical and stress prediction of its structural components vol.92, 2017, https://doi.org/10.1051/matecconf/20179201023
  2. Assessing the mechanical stresses of dynamic cables for floating offshore wind applications vol.1102, pp.1742-6596, 2018, https://doi.org/10.1088/1742-6596/1102/1/012016