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Fatigue Analysis of the Taut-Wire Mo

時間:2021-08-03 20:05:29 交通運(yùn)輸論文 我要投稿
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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 作者單位: School of Civil Engineering, Tianjin University, Tianjin 300072, China 期 刊: 中國海洋工程(英文版)   ISTICEISCI Journal: China Ocean Engineering 年,卷(期): 2011, 25(3) 分類號: U653.2 Keywords: taut-wire mooring system    fatigue analysis    T-N curve    dynamic stiffness    pre-tension    one-line failure    機(jī)標(biāo)分類號: P7 TV1 機(jī)標(biāo)關(guān)鍵詞: 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 基金項目: Fatigue Analysis of the Taut-Wire Mooring System Applied for Deep Waters[期刊論文]  中國海洋工程(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 ...

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