| 海洋立管涡激损伤分析的虚拟激励法概述 |
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| 引用本文： | 宗智,吴锋. 海洋立管涡激损伤分析的虚拟激励法概述[J]. 应用数学和力学, 2017, 38(1): 60-66. DOI: 10.21656/1000-0887.370506 |
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| 作者姓名： | 宗智 吴锋 |
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| 作者单位： | 大连理工大学 船舶工程学院 辽宁省深海浮动结构工程实验室;工业装备结构分析国家重点实验室(大连理工大学);高新船舶与深海开发装备协同创新中心,辽宁 大连 116024 |
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| 基金项目： | 国家自然科学基金(重点项目)（51639003）;国家自然科学基金(面上项目)（51679037;51279030）;国家自然科学基金青年科学基金（51609034）;国家重点基础研究发展计划（973计划）（2013CB036101）;中国博士后科学基金(2016M590219);高技术船舶专项资助 |
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| 摘 要： | 立管是连接海底钻井和海上平台的重要系统.涡激振动是造成立管疲劳损伤的主要因素.受海流的随机作用，立管涡激振动表现出不确定性，对这种随机振动进行快速有效地分析，对于立管的工程设计具有非常重要的意义.考虑随机激励作用，要比确定性激励困难得多，虚拟激励法对于克服这种困难具有很好的效果.近年来，应用虚拟激励法分析立管的涡激损伤问题，取得一些成果，该文对此作一概略的叙述.
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| 关 键 词： | 海洋立管 涡激振动 疲劳损伤 随机振动 虚拟激励法 |
| 收稿时间： | 2016-12-05 |
A Summary of the Pseudo-Excitation Method for VIV Fatigue Damage Analysis of Marine Risers |
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| Affiliation: | Liaoning Engineering Laboratory for Deep-Sea Floating Structures, School of Naval Architecture & Ocean Engineering, Dalian University of Technology;State Key Laboratory of Structural Analysis for Industrial Equipment (Dalian University of Technology);Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Dalian, Liaoning 116024, P.R.China |
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| Abstract: | The marine riser is an important part connecting the undersea drilling and the offshore platform. The primary factor causing the fatigue damage of marine risers is the vortex-induced vibration. Due to the random effects of ocean currents, the vortex-induced vibration of the riser is uncertain. Quick and reliable analysis of such random vibration is of great importance for the engineering design of the riser. Compared with the deterministic excitation, the random excitation is much more difficult to analyze, and the pseudo-excitation method is an efficient tool for this problem. In recent years, the pseudo-excitation method was applied and extended by the author and his collaborators for the analysis of vortex-induced vibration of marine risers, and many achievements were made, which were briefly summarized. |
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