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Fatigue Analysis of the Taut-Wire Mooring System Applied for Deep Waters
Abstract：Precisely predicting the fatigue life of taut-wire mooting systems has become an interesting and important problem for scientists and engineers since there are still difficulties in the inspection and maintenance of mooting lines in a rough sea environment especially in deep waters.In this paper,a comprehensive fatigue analysis is performed for a polyester taut-wire mooring system of an FPSO based on the time domain dynamic theory,rainflow cycle counting method and linear damage accumulation rule of Palmgren-Miner.Three influential factors in the fatigue analysis including the pre-tension,dynamic stiffness and T-N curve are investigated in detail.Two polyester T-N curves,one is from the DNVOS-E301 and the other is from the API-RP-2SM,are adopted in the calculation.The fatigue analysis of the mooring system after one-line failure is also carried out.The calculation results indicate that the fatigue life is significantly affected by the T-N curve.The fatigue life decreases with increasing pre-tension,and is largely reduced if taking into account the dynamic stiffness caused by cyclic loading.The analysis also proves that one-line failure has remarkable effects on the fatigue lives of other mooring lines.The present parametric and comparative study is believed to be meaningful to further understanding of the taut-wire mooring system for deepwater applications. 作者： Author： HUANG Wei LIU Hai-xiao SHAN Gui-min HU Cun 作者单位： School of Civil Engineering, Tianjin University, Tianjin 300072, China 期 刊： 中国海洋工程（英文版） ISTICEISCI Journal： China Ocean Engineering 年，卷(期)： 2011, 25(3) 分类号： U653.2 Keywords： taut-wire mooring system fatigue analysis T-N curve dynamic stiffness pre-tension one-line failure 机标分类号： P7 TV1 机标关键词： Deep Mooring System fatigue analysis mooring system fatigue life dynamic theory comparative study sea environment understanding difficulties time domain maintenance interesting inspection especially decreases results factors account paper 基金项目： Fatigue Analysis of the Taut-Wire Mooring System Applied for Deep Waters[期刊论文] 中国海洋工程（英文版） --2011, 25(3)Precisely predicting the fatigue life of taut-wire mooting systems has become an interesting and important problem for scientists and engineers since there are still difficulties in the inspection and ...【Fatigue Analysis of the Taut-Wire Mo】相关文章：
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