力学与实践 ›› 2020, Vol. 42 ›› Issue (5): 565-570.DOI: 10.6052/1000-0879-20-085

• 应用研究 • 上一篇    下一篇

深海采矿系统悬链线立管动力响应分析 1)

郐艳荣*, 魏明珠*,, 王旭*, 周济福*,,3)()   

  1. *中国科学院力学研究所流固耦合系统力学重点实验室,北京 100190
    中国科学院大学工程科学学院,北京 100049
  • 收稿日期:2020-03-02 修回日期:2020-05-14 出版日期:2020-10-08 发布日期:2020-10-22
  • 通讯作者: 周济福
  • 作者简介:3) 周济福,研究员,主要研究方向为泥沙运动力学,河口海岸动力学等。 E-mail: zhoujf@imech.ac.cn
    2) 郐艳荣,博士后,主要从事海洋工程方面研究
  • 基金资助:
    1) 国家重点基础研究发展计划(2017YFC1404200);国家自然科学基金(11572332)

DYNAMIC RESPONSE OF THE CATENARY RISER IN DEEP-SEA MINING SYSTEMS 1)

KUAI Yanrong*, WEI Mingzhu*,, WANG Xu*, ZHOU Jifu*,,3)()   

  1. *Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
    School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2020-03-02 Revised:2020-05-14 Online:2020-10-08 Published:2020-10-22
  • Contact: ZHOU Jifu

摘要:

基于有限元模型,模拟、分析深海采矿系统悬链线立管在海流和水面船运动约束下的动力响应。结果表明:悬链线立管的最大等效应力和最大位移随时间呈周期性变化,且存在半个周期的相位差;当水面船运动到最高点时,悬链线立管位移达到最大值。悬链线立管最大 等效应力和最大位移随水面船运动位移幅值的增加而增加,随运动周期的增加而减小。进一步对比发现,水面船运动位移和周期对立管等效应力的影响大于对其位移的影响。

关键词: 深海采矿系统, 悬链线立管, 动力响应, 水面船, 海流

Abstract:

With a finite element model, the dynamic response of the catenary riser of deep-sea mining systems under the action of the ocean current and the motion of the surface vessel is simulated. The results show that the maximum equivalent stress and the maximum displacement of the catenary riser change periodically with a phase difference of half a period between them. When the surface vessel moves to the highest position, the displacement of the catenary riser reaches the maximum. The maximum equivalent stress and the maximum displacement of the catenary riser increase with the increase of the displacement amplitude of the surface vessel and decrease with the increase of the period. In addition, the effect of the displacement and the period of the motion of the surface vessel on the equivalent stress of the catenary riser is greater than that on the displacement.

Key words: deep-sea mining system, catenary riser, dynamic response, surface vessel, ocean current

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