郐艳荣, 魏明珠, 王旭, 周济福. 深海采矿系统悬链线立管动力响应分析 1)[J]. 力学与实践, 2020, 42(5): 565-570. DOI: 10.6052/1000-0879-20-085
引用本文: 郐艳荣, 魏明珠, 王旭, 周济福. 深海采矿系统悬链线立管动力响应分析 1)[J]. 力学与实践, 2020, 42(5): 565-570. DOI: 10.6052/1000-0879-20-085
KUAI Yanrong, WEI Mingzhu, WANG Xu, ZHOU Jifu. DYNAMIC RESPONSE OF THE CATENARY RISER IN DEEP-SEA MINING SYSTEMS 1)[J]. MECHANICS IN ENGINEERING, 2020, 42(5): 565-570. DOI: 10.6052/1000-0879-20-085
Citation: KUAI Yanrong, WEI Mingzhu, WANG Xu, ZHOU Jifu. DYNAMIC RESPONSE OF THE CATENARY RISER IN DEEP-SEA MINING SYSTEMS 1)[J]. MECHANICS IN ENGINEERING, 2020, 42(5): 565-570. DOI: 10.6052/1000-0879-20-085

深海采矿系统悬链线立管动力响应分析 1)

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

  • 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。

     

    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.

     

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