含缺陷管道碳纤维复合材料补强数值模拟研究  

The Study on Numerical Simulation of Defective Pipe Reinforced with Carbon Fiber Composite Materials

作　　者：周云[1] 王琪[1] 王一宁[1] Zhou Yun;Wang Qi;Wang Yining(Special Equipment Safety Supervision Inspection Institute of Jiangsu Province,Nanjing,Jiangsu 210036,China)

机构地区：[1]江苏省特种设备安全监督检验研究院,江苏南京210036

出　　处：《化工设备与管道》2024年第3期84-93,共10页Process Equipment & Piping

基　　金：国家市场管理监督总局项目(2020MK036);江苏省特种设备安全监督检验研究院院内项目(KJ(Y)2020031)。

摘　　要：当代石油、天然气等能源的主要运输方式为管道运输,管道在长期使用时会产生各种缺陷,这些缺陷将对管道的结构和强度产生影响。目前先进的管道修复技术为复合材料补强技术,其中碳纤维复合材料是较优的选择。为了测试有/无碳纤维补强管道缺陷处的效果,开展了不同层数碳纤维复合材料的拉伸实验研究,结合ANSYS数值模拟探究了修复前后不同缺陷管道在承载时的应力、应变分布,分析了修复补强效果的影响因素。结果表明:缺陷减薄厚度对管道的应力、应变状态影响较大,碳纤维复合材料修复技术能在减小管道缺陷处应力、应变的同时优化其应力、应变分布,可以通过增加碳纤维修复层数来提升修复效果,相关研究对于管道的修复补强有一定指导意义。Nowadays oil,natural gas and other energy sources are mainly transported by pipeline,the pipeline will produce various defects in long-term use,and these defects will have an affect on the structure and strength of the pipeline.The current advanced pipeline repair technology is composite reinforcement technology,of which carbon fiber reinforced plastic(CFRP)are the better choice.In order to test the effect of reinforcing the pipe defects with/without carbon fiber,the tensile experimental study of CFRP with different number of layers was carried out.Combined with ANSYS numerical simulation,the stress and strain distribution of different defective pipelines in bearing before and after repair were investigated,and the influencing factors of the repair and reinforcement effect were analyzed.The results show that:the thickness of defect thinning has a greater affect on the stress and strain state of the pipe,CFRP technology can optimize the stress and strain distribution of the pipe defects while reducing the stress and strain,and the repair effect can be improved by increasing the number of carbon fiber repair layers,and the relevant research has a certain guiding significance for the repair of the pipeline reinforcement.

关 键 词：承压管道 局部缺陷 复合材料 碳纤维补强 数值模拟 

分 类 号：TQ055.81[化学工程]