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防摩擦层对非粘结柔性立管截面力学性能影响 被引量：2

Impact of anti-friction layer on the cross-sectional mechanical properties of unbonded flexible risers
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摘要 以一类八层非粘结柔性立管为研究对象,对防摩擦层分别采用计入实际几何形状的螺旋带模型和简化的圆柱壳模型,采用理论和数值方法计算立管在不同边界下的轴向及扭转刚度.计算结果表明:数值解与理论值符合较好;在轴向拉力、逆时针扭矩、顺时针扭矩(限制立管轴向位移)下,使用两种防摩擦层模型对立管刚度影响可以忽略;在轴向压力、顺时针扭矩(自由边界)下,采用圆柱壳模拟防摩擦层会大幅增大立管刚度. Two models are chosen to simulate anti-friction layer of an eight-layer unbonded flexible riser, one is the helix model which takes actual geometry into consideration, and the other is the sim- plified cylindrical shell model. Axial and torsional stiffnesses of the unbonded flexible riser under dif- ferent boundary conditions were predicted by analytical and numerical methods. It is shown that nu- merical results agree well with theoretical results. Under axial tension, anticlockwise torsion and clockwise torsion （prevented from moving axially）, stiffnesses obtained by the two models of anti- friction layer are basically the same. Under axial compression and clockwise torsion （free boundary condition）, the cylindrical shell model of anti-friction layer will dramatically increase stiffnesses of the riser.
作者 任少飞 唐文勇 薛鸿祥
机构地区 上海交通大学海洋工程国家重点实验室 上海交通大学高新船舶与深海开发装备协同创新中心
出处 《华中科技大学学报（自然科学版）》 EI CAS CSCD 北大核心 2015年第12期60-64,共5页 Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金 国家自然科学基金重大资助项目(51490674) 国家自然科学基金资助项目(51579146) 上海市自然科学基金资助项目(15ZR1423500)
关键词 非粘结柔性立管 防摩擦层 轴向力 扭矩 刚度 unbonded flexible risers anti-friction layers axial forces torsions stiffness
分类号 P751 [交通运输工程—港口、海岸及近海工程]
  • 相关文献

参考文献12

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二级参考文献17

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共引文献9

同被引文献11

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二级引证文献3

华中科技大学学报（自然科学版）
2015年 第12期

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