|Table of Contents|

Citation:
　Jiayu Qian,Liping Sun and Linfeng Song.Material Selection for Hawsers for a Side-by-side Offloading System[J].Journal of Marine Science and Application,2014,(4):449-454.[doi:10.1007/s11804-014-1272-8]
Click and Copy

Material Selection for Hawsers for a Side-by-side Offloading System

Info

Title:
Material Selection for Hawsers for a Side-by-side Offloading System
Author(s):
Jiayu Qian;  Liping Sun and Linfeng Song
Affilations:
Author(s):
Jiayu Qian;  Liping Sun and Linfeng Song
Deep Water Engineering Research Center, Harbin Engineering University, Harbin 150001, China
Keywords:
FPSO offloading system;  side-by-side offloading ststem;  hydrodynamic interaction;  hawser material;  nonlinear stiffness
分类号:
-
DOI:
10.1007/s11804-014-1272-8
Abstract:
In order to provide a theoretical guide for choosing the material for the hawsers for the FPSO side-by-side offloading system, which is moored by the yoke system, the 3D potential flow theory and full coupled time-domain analysis are presented to study the dynamic response of the offloading system. The MingZhu FPSO offloading system in the field BZ25-1 is simulated here; and four different characteristic fiber ropes are used as the material for the hawsers. To acquire an accurate hawser line tension, the polynomial fitting method is used to calculate the nonlinear stiffness of the hawsers. By comparing the hawser lines’ tension and the relative motion between the FPSO and the shuttle tanker, a suitable material for the hawser lines is chosen and discussed in this paper. The results indicate that the nonlinear stiffness characteristic of the fiber rope has a small effect on the relative motion of the vessels, but the hawser lines’ tension is greatly influenced by the different characteristics of the fiber ropes. The hawser lines’ tension with nonlinear stiffness is in accordance with the one with the upper and lower bound linear stiffness, which proves this method of fitting the fiber ropes’ nonlinear stiffness is reasonable and reliable.

References:

American Bureau of Shipping (2011). Guidance notes on the application of fiber ropes for offshore mooring. ABS Plaza, Houston, USA, 9-13.
American Petroleum Institute (2001). Recommended practice for design, manufacture, installation, and maintenance of synthetic fiber ropes for offshore mooring. API, Washington, D.C., USA, 11-13.
Bosman RLM, Hooker J (1999). The elastic modulus characteristics of polyester mooring ropes. Annual Offshore Technology Conference, Houston, USA, OTC-10779.
Bridon (2007). Specialist fiber rope solutions. 3A the Centre, High Street Polegate, East Sussex, BN26 6AQ, United Kingdom, 10-13.
Buchner B, Van DA, De Wilde J (2001). Numerical multiple-body simulation of side-by-side mooring to an FPSO. International Offshore and Polar Engineering Conference, Stavanger, Norway, 343-353.
Davies P, Baron P, Salomon K, Bideaud C, Labbé JP, Stéphane T, Francois M, Francois G, Bunsell T, Moysan AG (2008). Influence of fiber stiffness on deepwater mooring line response. International Conference on Offshore Mechanics and Arctic Engineering, Rotterdam, Berlin, Germany, 179-187.
Del Vecchio CJM, Chaplin CR (1992). Appraisal of lightweight moorings for deep water. The 24th Annual Offshore Technology Conference, Houston, USA, 189-199.
Fernandes AC, Del Vecchio CJM, Castro GAV (1998). Mechanical properties of polyester mooring ropes. International Journal of Offshore and Polar Engineering, 9(3), 248-254.
Kim JW, Kyoung JH, Sablok A, Lambrakos K (2011). A nonlinear viscoelastic model for polyester mooring line analysis. International Conference on Offshore Mechanics and Arctic Engineering, Rotterdam, Netherlands, 797-803.
Kim MH, Ding Y, Zhang J (2003). Dynamic simulation of polyester mooring lines. International Symposium on Deepwater Mooring Systems Concepts, Design Analysis, and Materials, Houston, USA, 101-114.
Liu Yingzhong, Miao Guoping, Li Yile (1997). A time domain computation method for dynamic behavior of mooring system. Journal of Shanghai Jiao Tong University, 31(11), 7-12. (in Chinese)
Mc Kenna HA, Wong RK (1979). Synthetic fiber rope, properties and calculations relating to mooring systems. International Conference on Offshore Mechanics and Arctic Engineering, New York, USA, 189-198.
Newman JN (2004). Progress in wave load computations on offshore structures. Invited lecture on the Ocean, Offshore and Arctic Engineering Conference, Vancouver, Canada.
Qian Jiayu, Sun Liping, Song Linfeng (2013). The effect of material nonlinearity on the dynamics of hull/mooring coupled system. International Conference on Offshore Mechanics and Arctic Engineering, Nantes, France, OMAE-10034.
Oil Companies International Marine Forum (1994). Prediction of Wind and Current Loads on VLCCs. Oil Companies International Marine Forum, Bermuda, London, 15-19.
Royal Lankhorst Euronete (2011). Ropes for deep water mooring. The Royal Lankhorst Euronete Group, Póvoa de Varzim, Portugal, 6-9.
Song Linfeng, Sun Liping, Wang Dejun (2013). Coupling analysis of stinger-lay barge-pipeline of S-lay installation in deep water. Journal of Harbin Engineering University, 34(4), 415-420. (in Chinese)
Sun Liping, He Qiang, Ai Shangmao (2011). Safety assessment for a side-by-side offloading mooring system. Journal of Marine Science and Application, 10(3), 315-320.
Tahar A, Kim MH (2008). Coupled dynamic analysis of floating structures with polyester mooring lines. Journal of Ocean Engineering, 35(17-18), 1676-1685.
Tahar A, Sidarta D, Ran A (2012). Dual stiffness approach for polyester mooring line analysis in time domain. International Conference on Offshore Mechanics and Arctic Engineering, Rio de Janeiro, Brazil, 513-521.
Wang Hongwei, Luo Yong, Ma Gang, Hu Kaiye (2010). Research on fiber material mooring scheme of the deepwater semi-submersible drilling platform. Journal of Ship Engineering, 32(3), 58-62. (in Chinese)
Webster William C, Kim JW, Jing XN (2012). Rod dynamics with large stretch. International Conference on Offshore Mechanics and Arctic Engineering, Rio de Janeiro, Brazil, 345-354.
Yuan Meng, Fan Ju, Miao Guoping, Zhu Renchuan (2010). Mooring performance of nonlinear elastic mooring lines. Journal of Shanghai Jiao Tong University, 44(6), 820-827. (in Chinese)

Memo

Memo:
Supported by the National 111 Project of China under Grant No. B07019; and Important National Science & Technology Specific Project: Numerical Simulation and Experimental Investigation of FPSO and Offloading System, No. 2011ZX05030-006-002.
Last Update: 2014-12-11