摘要
防弯器是嵌套于脐带缆端部的关键附件,其主要作用是防止脐带缆发生过度弯曲变形。由于海洋环境荷载和浮体的边界运动作用,脐带缆防弯器段往往承受拉弯交变载荷,在长期作用下会产生疲劳破坏。现有研究往往聚焦于脐带缆自身结构的疲劳损伤,而对于防弯器结构疲劳性能分析较少。文中考虑两者之间的滑动摩擦和几何非线性等因素,建立脐带缆防弯器段的有限元模型。进而,通过整体水动力分析获得张力载荷时程曲线。最后,基于Fe-safe疲劳寿命软件建立预测防弯器的服役寿命方法。通过该方法得出在服役时脐带缆和防弯器均满足使用年限要求和脐带缆首先破坏的结论。该方法可为防弯器的分析设计具有一定的指导意义。
The bend stiffener is a key accessory nested in the end of the umbilical cable and its main function is to prevent excessive bending and deformation of umbilical cable.Due to the load of the marine environment and the boundary motion of the floater,the bend stiffener section of umbilical cable is often subjected to alternating tension and bending loads which,under the long-term action,will cause fatigue damage.The existing researches tend to focus on the fatigue damage of the umbilical cable’s structure itself.While,the fatigue performance analysis of the bend stiffener structure is less.In this paper,the finite element model of the bend stiffener section of umbilical cable is set up with consideration of the sliding contact between these two structures and the geometric nonlinearity.Furthermore,the time history curve of tension load is obtained through hydrodynamic analysis of the whole configuration.Finally,a method for predicting the service life of the bend stiffener is set up on the basis of Fe-safe fatigue life software.It is concluded through the method that both umbilical cable and the bend stiffener meet the service life requirements and the umbilical cable is damaged first.This method can provide some guidance for the analysis and design of the bend stiffener.
作者
闫懋延
邹科
屈衍
刘刚
朱鹏程
毛彦东
YAN Maoyan;ZOU Ke;QU Yan;LIU Gang;ZHU Pengcheng;MAO Yandong(School of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,China;Institute of Frontier and Interdisciplinary Science,Southern University of Science and Technology,Guangdong Shenzhen 518055,China;Deep Ocean Offshore Technology(Shenzhen)Co.,Ltd.,Guangdong Shenzhen 518000,China;Taizhou Zhongfu New Material Technology Co.,Ltd.,Zhejiang Taizhou 317005,China)
出处
《高压电器》
CAS
CSCD
北大核心
2022年第1期53-60,共8页
High Voltage Apparatus
基金
国家自然科学基金(11732004,51975087)
山东省重点研发计划(2019JZZY010801)
工业装备结构分析国家重点实验室开发基金(GZ20105)。
关键词
防弯器
脐带缆
数值模拟
疲劳寿命预测
bend stiffener
umbilical cable
finite element analysis
Fe-safe fatigue life prediction
