华中科技大学学报（自然科学版）Issue(5)：107-110,4.DOI:10.13245/j.hust.140522
螺旋条带局部变形对柔性立管弯曲响应的影响
Effect of local deformations of helical strips on bending behavior of unbonded flexible risers
摘要
Abstract
Expressions were derived for the bending and torsion increments of helical strips as the un-bonded flexible riser was exposed to a constant bending curvature .With energy approach ,the contri-bution of these local deformations of individual helical strips to the bending moment versus curvature relationship and bending stiffness of helical layers was included .Analytical formulations were then presented to determine the bending behavior of flexible risers .Case study show s that the inclusion of the local deformations of individual helical strips significantly influences the full-slip bending stiffness and should be considered in the analysis .The theoretical results are compared with the experimental data from the available literature and encouraging correlations are found .The stress components in-troduced are calculated with the simple beam theory .The comparison of analytical and commercial software results shows that these components play an important part in the total stress .关键词
非黏合柔性立管/弯曲响应/局部变形/螺旋条带/能量法Key words
unbonded flexible riser/bending behavior/local deformation/helical strip/energy ap-proach分类
海洋科学引用本文复制引用
董磊磊,张崎,黄一..螺旋条带局部变形对柔性立管弯曲响应的影响[J].华中科技大学学报（自然科学版）,2014,(5):107-110,4.基金项目
创新研究群体科学基金资助项目（51221961）；中央高校基本科研业务费专项资金资助项目（DUT14RC（3）005）． （）
