中国舰船研究Issue(1)：64-72,9.DOI:10.3969/j.issn.1673-3185.2013.01.010
深海非粘结柔性立管简化模型数值分析及实验研究
Experimental and Numerical Analysis of a New Simplified Model for the Deepwater Unbonded Flexible Risers
摘要
Abstract
A new simplified model is proposed for the analysis of deepwater unbonded flexible risers,in which the influence factors of flexible risers’tensile,torsion and rigidity are discussed. The unbonded flex⁃ible riser is suitable for rough deep-sea conditions due to its structural features,i.e. small rigidity,light in mass,strong corrosion resistance and anti-fatigue performance. However,the numerical simulation analy⁃sis of the unbonded flexible riser are confronted with a number of challenges resulted from its strong nonlin⁃ear characteristics in the friction and contact between different layers of the unbonded flexible riser. Thus, it is difficult to guarantee both accuracy and efficiency when evaluating an unbonded flexible riser model. Aiming at this problem,a new simplified model is proposed by employing a simplified beam and shell ele⁃ment model and considering the axial elastic modulus of the carcass and pressure armour. In order to vali⁃date the proposed model,the experimental data are compared with the numerical solution,and the results show that the simplified model does not only reduce the computation cost,but also agrees well with the ac⁃tual constitutive relation of the flexible riser.关键词
非粘结柔性立管/刚度/本构关系/实验研究Key words
unbonded flexible riser/rigidity/constitutive relations/experimental analysis分类
海洋科学引用本文复制引用
姜豪,杨和振,刘昊..深海非粘结柔性立管简化模型数值分析及实验研究[J].中国舰船研究,2013,(1):64-72,9.基金项目
国家自然科学基金资助项目(51009093) （51009093）
