上海交通大学学报

上海交通大学学报 >

2022 , Vol. 56 >Issue 9: 1247 - 1255

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2021.144

船舶海洋与建筑工程

含复合材料结构的非黏结柔性立管弯曲特性

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  • 1.上海交通大学 海洋工程国家重点实验室
    2.高新船舶与深海开发装备协同创新中心,上海 200240
刘庆升(1990-),男,黑龙江省哈尔滨市人,博士生,从事非黏结柔性立管研究.

收稿日期: 2021-04-30

  网络出版日期: 2022-10-09

基金资助

国家自然科学基金(51979166);国家自然科学基金(51909163)

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Bending Properties of Unbonded Flexible Risers with Composite Materials

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  • 1. State Key Laboratory of Ocean Engineering
    2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2021-04-30

  Online published: 2022-10-09

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摘要

非黏结柔性立管常用于将海底油气资源输送到平台,有时因设计需要会包含复合材料圆柱壳层结构.以一类8层的非黏结柔性立管为研究对象,分析了含有复合材料圆柱壳层结构的非黏结柔性立管的弯曲特性.提出了一种作用于非黏结柔性立管的轴对称载荷和弯曲载荷联合作用的理论模型,同时建立了计及详细几何特性的非黏结柔性立管数值模型进行了验证.分析了两种典型复合材料及其纤维体积分数对非黏结柔性立管弯曲特性的影响.理论与数值结果吻合较好,计算结果表明:非黏结柔性立管的弯曲特性受复合材料圆柱壳层轴向弹性模量影响较大,轴向弹性模量较大的复合材料会较大地增强完全滑移阶段的非黏结柔性立管的弯曲刚度.非黏结柔性立管的轴向抗拉刚度和完全滑移阶段的弯曲刚度都随着复合材料圆柱壳层的纤维体积分数增大,接近线性增强.

关键词： 非黏结柔性立管; 复合材料; 圆柱壳层; 弯曲刚度; 纤维体积分数

本文引用格式

刘庆升, 薛鸿祥, 袁昱超, 唐文勇 . 含复合材料结构的非黏结柔性立管弯曲特性[J]. 上海交通大学学报, 2022 , 56(9) : 1247 -1255 . DOI: 10.16183/j.cnki.jsjtu.2021.144

Abstract

Unbonded flexible risers are widely applied to transport oil and gas resources from seabed to platform, and composite cylindrical layers are sometimes contained due to design requirements. Based on an 8-layer unbonded flexible riser model, the bending properties of the unbonded flexible risers with composite cylindrical layers are studied. A theoretical method of combining axisymmetric and bending loads acting on unbonded flexible risers is proposed, and a numerical method with detailed geometric characteristics taken into account is established for verification. The influence of two typical composite materials as well as the fibre volume fraction on the bending properties of the unbonded flexible risers is analyzed. The theoretical and the numerical results are in good agreement, which shows that the bending properties of the unbonded flexible risers are greatly affected by the axial Young’s modulus of the composite cylindrical layers, and composite material with larger axial Young’s modulus would greatly enhance the bending stiffness of the unbonded flexible risers, expecially in the full-slipping stage. In addition, the axial tensile stiffness and bending stiffness of full-slipping stage are proportional to the fibre volume fraction of the composite cylindrical layers.

Key words： unbonded flexible risers; composite materials; cylindrical layers; bending stiffness; fibre volume fraction

参考文献

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