| 隔水管随机响应疲劳可靠性分析 |
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| 引用本文： | 林海花,王言英.隔水管随机响应疲劳可靠性分析[J].大连海事大学学报(自然科学版),2008,34(3). |
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| 作者姓名： | 林海花 王言英 |
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| 作者单位： | 大连理工大学船舶工程学院 辽宁大连116024 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 为实现对波流共同作用下的隔水管疲劳可靠性分析,在时域里对隔水管进行随机非线性响应计算,给出空间隔水管非线性涡激动力响应的增量迭代算法.通过计算得到的隔水管关键点的应力时间历程和应用累积损伤模型,估算隔水管的疲劳寿命并进行可靠性分析,得出不同顶部预张力、旋转刚度和相关应力成分对疲劳可靠性影响的分析结果.
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| 关 键 词： | 隔水管 随机响应 疲劳可靠性 时域非线性 有限元法 |
Fatigue reliability analysis for marine riser with stochastic responses |
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| LIN Hai-hua,WANG Yan-ying.Fatigue reliability analysis for marine riser with stochastic responses[J].Journal of Dalian Maritime University,2008,34(3). |
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| Authors: | LIN Hai-hua WANG Yan-ying |
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| Abstract: | An investigation on fatigue reliability analysis for the marine riser subjected to waves and currents in 3D space was presented.The dynamic responses of the riser were treated as a nonlinear stochastic process and it was analyzed by using iterative-incremental method in the time domain.The time history of stresses at the key points for the riser was obtained and then the fatigue life and reliability analysis can be performed.Finally,the effects of different pretensions,rotating rigidities and stress compositions on the fatigue reliability analysis are given. |
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| Keywords: | marine riser stochastic response fatigue reliability time domain and nonlinear finite element method |
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