系统仿真学报 ›› 2019, Vol. 31 ›› Issue (10): 2122-2130.doi: 10.16182/j.issn1004731x.joss.17-0351

• 仿真应用工程 • 上一篇    下一篇

隔水管悬挂模式下的纵向振动特性仿真研究

王川1, 黎俊1, 谢真强2, 王国荣1   

  1. 1. 西南石油大学机电工程学院,四川 成都 610500;
    2. 中电科大数据研究院有限公司,贵州 贵阳 550000
  • 收稿日期:2017-07-21 修回日期:2017-08-11 出版日期:2019-10-10 发布日期:2019-12-12
  • 作者简介:王川(1983-),男,四川广安,博士,讲师,研究方向为管柱力学、油气装备设计与仿真。
  • 基金资助:
    国家自然科学基金(51704254), 国家创新专项(工信部联装[2016]24号), 中国石油科技创新基金(2015D-5006- 0309), 油气资源与探测国家重点实验室开放课题(PRP/open-1506)

Simulation of Axial Vibration Characteristics of Marine Riser under Suspension mode

Wang Chuan1, Li Jun1, Xie Zhenqiang2, Wang Guorong1   

  1. 1. College of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China;
    2. China Light Branch Data Research Institute Co., Ltd, Guiyang 550000, China
  • Received:2017-07-21 Revised:2017-08-11 Online:2019-10-10 Published:2019-12-12

摘要: 考虑平台升沉运动及张紧器影响,基于动力学基本原理建立隔水管悬挂模式下的纵向振动力学仿真模型,利用有限差分法进行离散并求解,分析悬挂方式、浮力块、水深、壁厚和LMRP(Lower Marine Riser Package)等因素对隔水管纵向振动的影响。仿真结果表明:软悬挂模式优于硬悬挂模式;配置浮力块会加剧隔水管纵向振动;隔水管纵向位移和应力从顶部到底部先减小后增大,且底部增大的趋势随着水深的增加而逐渐减弱;隔水管的应力和纵向位移随着壁厚的增加逐渐减小;应力随着LMRP质量增加而增大。

关键词: 隔水管, 悬挂模式, 振动特性, 仿真模型, 有限差分法

Abstract: The mechanical simulation model of vertical vibration of Marine riser under suspension mode has been established based on the basic principle of dynamics theory. In the model, the influence of heave movement and top tensioner is considered. The vibration equation is solved by the finite difference method to obtain the distribution of axial stress and displacement. Besides, the effects of suspension mode, buoyancy block,water depth, wall thickness and LMRP on the vertical vibration of riser are discussed. According to the results, the soft suspension mode is superior to the hard suspension mode. The buoyancy blocks will increase the axial vibration of the marine riser. The axial displacement and stress of the riser first decrease and then increase from the top to the bottom, and the variation tendency of increase of bottom decreases gradually with the increase of water depth. The riser axial displacement and stress gradually decrease as wall thickness increases, and the stress of riser increases with the increase of LMRP mass.

Key words: marine riser, suspension mode, vibration characteristics, simulation model, finite difference method

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