含复合材料层的非粘结柔性立管轴向刚度分析  

Analysis of the axial tensile and compressive stiffness of an unbonded flexible riser containing a composite layer

作　　者：刘庆升 薛鸿祥[1,2] 唐文勇[1,2] LIU Qingsheng;XUE Hongxiang;TANG Wenyong(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海2002402 [2]上海交通大学高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《哈尔滨工程大学学报》2020年第4期500-505,共6页Journal of Harbin Engineering University

基　　金：上海市青年科技启明星计划项目(16QA1402300)。

摘　　要：为了在复合材料逐渐引入到非粘结柔性立管的生产过程中,加强非粘结果性立管截面力学性能,本文以一类典型非粘结柔性立管为例,研究其在轴对称载荷作用下的截面力学性能。本文采用能量法推导了复合材料层在对称荷载作用下的力学性能,结合其他层的刚度矩阵建立了一种8层非粘结柔性立管的理论分析模型,并用ABAQUS软件建立了相应的完整的数值模型,研究其在轴向拉伸和压缩载荷作用下的轴向刚度。计算结果表明:理论计算结果和数值结果变化趋势一致,复合材料层对非粘结柔性立管的轴向刚度有一定的加强;在轴向载荷作用下,顶端限制旋转自由度的边界条件对轴向拉伸刚度影响不大。Aiming at the problem that composite materials are gradually introduced into the production of unbonded flexible risers to reinforce the cross-sectional properties we studied the mechanical cross-sectional properties under axially symmetric loading. In this paper, the mechanical behavior of the composite reinforced layer under symmetrical loads was deduced by an energy method. A theoretical model of an 8-layer unbonded flexible riser was established, as well as a numerical model by ABAQUS, and the axial stiffness was studied under axial tension and axial compression. The calculation results show that the change of the theoretical calculation result is consistent with the numerical result. The composite reinforced layers partially enhance the axial tensile stiffness and axial compressive stiffness of the unbonded flexible riser. In addition, under the action of the axial tensional and compressional load, the boundary condition of the top prevented from rotation has little effect on the axial stiffness.

关 键 词：非粘结柔性立管 复合材料层 抗拉刚度 抗压刚度 理论方法 数值方法 详细数值模型 敏感性分析 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]