| 深水立管波致疲劳分析的确定性方法 |
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| 引用本文： | 董磊磊,张崎,黄一. 深水立管波致疲劳分析的确定性方法[J]. 中国造船, 2011, 0(4) |
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| 作者姓名： | 董磊磊 张崎 黄一 |
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| 作者单位： | 大连理工大学船舶工程学院; |
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| 基金项目： | 国家863计划“顶张紧式立管(TTR)设计与安装关键技术研究及软件研发”(2008AA09A10504) |
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| 摘 要： | 采用Longuet-Higgins法将表征长期海况的波浪散布图分解为单个规则波的散布图,以此进行深水立管的疲劳分析,并与雨流法的计算结果进行了比较。结果表明,该方法可以准确捕捉最大疲劳损伤发生的位置,计算得到的疲劳寿命和雨流法的结果较为接近;且随着离散的精细,其结果和雨流法的结果越加接近。该方法计算速度快,占用硬盘空间少,可用于初始设计阶段立管的疲劳分析及疲劳参数敏感性分析。在疲劳分析的校核阶段,该方法因计算结果是保守的,依然可以应用。
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| 关 键 词： | Longuet-Higgins法 波浪散布图 规则波散布图 深水立管 疲劳分析 |
Deterministic Approach to Wave Induced Fatigue Analysis of Deepwater Risers |
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| DONG Leilei,ZHANG Qi,HUANG Yi. Deterministic Approach to Wave Induced Fatigue Analysis of Deepwater Risers[J]. Shipbuilding of China, 2011, 0(4) |
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| Authors: | DONG Leilei ZHANG Qi HUANG Yi |
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| Affiliation: | DONG Leilei,ZHANG Qi,HUANG Yi(Department of Naval Architecture,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | The Longuet-Higgins method is employed to decompose wave scatter diagram into individual regular wave scatter diagram,based on which a global fatigue analysis is performed for a deepwater production TTR.The result is compared with that obtained from stochastic time domain analysis and rain-flow counting technique.A contrastive analysis shows that the accuracy of present method in catching critical location.The predicted fatigue life is also close to the accurate value and will be even much closer with a fin... |
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| Keywords: | Longuet-Higgins method wave scatter diagram regular wave scatter diagram deepwater riser fatigue analysis |
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