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工程力学  2013 

深海顶张力立管参激-涡激耦合振动响应分析

DOI: 10.6052/j.issn.1000-4750.2011.12.0895, PP. 282-286

Keywords: 顶张力立管,涡激振动,参数激励,参激-涡激耦合振动,有限差分法

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Abstract:

该文研究顶张力立管参激-涡激耦合振动计算方法和动力特性。考虑立管顶端动边界条件,建立顶张力立管模型,研究其在剪切流中的涡激振动响应和参激-涡激耦合振动响应。提出立管的动力响应分析方法,分析参数激励对立管横向涡激振动的影响。结果表明,立管的横向振动响应频率存在0.5倍参激亚谐成分,参数激励对于立管横向振动具有重要影响。

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