哈尔滨工程大学学报Issue(11)：1352-1356,5.DOI:10.3969/j.issn.1006-7043.201210056
考虑非线性弯曲刚度的柔性立管时域分析
Time domain analysis of flexible risers considering non-linear bending stiffness
摘要
Abstract
To investigate the dynamic time domain analysis of flexible risers due to the non-linear relationship of the bending moment and curvature of flexible pipes, the analysis model of flexible risers is established based on the lumped mass method. Non-linear bending stiffness is considered during the dynamic analysis of tension and curva-ture of the riser. A case study of a flexible riser at a depth of 1 500 meters in the South China Sea is presented. The results show that the tension load decreases with the increase in length, the maximum value occurs at the top point. The top and bottom points of the curvature have a larger value;the center length has the smaller curvature. When comparing the linear bending stiffness, the tension results are almost the same, but the curvatures are obviously dif-ferent when considering the non-linear bending stiffness. More accurate time domain analysis results of the flexible risers can be gained by considering the nonlinear bending stiffness input.关键词
柔性立管/时域分析/非线性弯曲刚度/集中质量法Key words
flexible riser/time domain analysis/non-linear bending stiffness/lumped mass method分类
海洋科学引用本文复制引用
卢青针,冯俐,阎军..考虑非线性弯曲刚度的柔性立管时域分析[J].哈尔滨工程大学学报,2013,(11):1352-1356,5.基金项目
国家863计划资助项目（2012AA09A212）；海洋工程装备设计分析研究所创新研究群体基金资助项目（50921001）． （）
