摘要
双金属复合管在海洋工程中应用广泛,使用过程中极易发生屈曲失效和内衬管褶皱现象。本文使用ABAQUS有限元软件,分析了双金属复合管液压成形过程及其在复杂载荷下的屈曲失效,研究了残余应力、管道径厚比和材料属性对双金属复合管屈曲失效的影响。结果表明,降低管道径厚比或增大外管材料的屈服强度,能够有效延缓管道屈曲,减小内衬管褶皱幅值。本文研究结果有助于更好地理解双金属复合管屈曲失效现象,进一步完善其加工工艺。
Bi-metal lined pipes are widely used in ocean engineering,but they are prone to buckling failure and liner folding in the course of use.In this paper,the ABAQUS finite element software is used to analyze the hydroforming process of bi-metal lined pipes and their buckling failure under complex loads.The impact of residual stress,the diameter to thickness ratio of lined pipe and the material attributes on buckling failure of bi-metal lined pipes are studied.The results show that the buckling of pipeline can be effectively delayed and the fold amplitude of inner liner can be reduced by reducing the diameter-thickness ratio of lined pipe or increasing the yield strength of outer pipe material.The results of this paper are helpful to better understand the buckling failure phenomenon of bi-metal lined pipe and further improve its processing technology.
作者
张春迎
余建星
余杨
韩梦雪
李牧之
颜铠阳
成司元
徐立新
ZHANG Chunying;YU Jianxing;YU Yang;HAN Mengxue;LI Muzhi;YAN Kaiyang;CHENG Siyuan;XU Lixin(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;Tianjin Key Laboratory of Port and Ocean Engineering,Tianjin University,Tianjin 300072,China)
出处
《中国海上油气》
CAS
CSCD
北大核心
2020年第5期168-173,共6页
China Offshore Oil and Gas
基金
国家重点研发计划“深海浮式结构物安全评估技术研究(编号:2018YFC0310502)”
国家自然科学基金面上项目“深海管道的冲刷腐蚀与防护研究(编号:51879189)”部分研究成果。
关键词
双金属复合管
液压成形
残余应力
有限元数值模拟
屈曲失效
bi-metal lined pipe
hydroforming
residual stress
finite element numerical simulation
buckling failure
