芳纶纤维复合材料修补缺陷管道的仿真分析  

Simulation analysis for repairing defective pipelines with AFRP

作　　者：邹海翔[1] 马廷霞[1] 谢娜娜[2] 徐立[3] 刘维洋 吕亚峰[1] 

机构地区：[1]西南石油大学机电工程学院 [2]重庆燃气集团股份有限公司管道维护分公司 [3]青海油田采油一厂

出　　处：《油气储运》2016年第11期1206-1211,共6页Oil & Gas Storage and Transportation

摘　　要：芳纶纤维复合材料是一种可用于缺陷管道补强修复的新型多维复合材料,现场一般采用多层环向缠绕的方式对管道进行修复。使用ABAQUS软件对缺陷管道在芳纶纤维复合材料补强前后进行仿真分析,并研究修复厚度、内压、缺陷深度对修复效果的影响。结果表明:芳纶纤维复合材料能够修复圆坑和曲面缺陷管道,恢复缺陷管道的承压能力;通过增加芳纶纤维复合材料补强层的厚度,能够降低缺陷管道的环向应力,且随着修复厚度的增加,环向应力减小的趋势变小;当修复管道缺陷处Mises等效应力小于屈服强度时,内压越小,补强效果越好。As a kind of innovative multi-dimensional reinforced materials, ararnid fiber reinforced polymer （AFRP） is often used to repair defective pipelines through winding in multiple layers. The ABAQUS software was adopted to simulate the defective pipeline before and after repairing with AFRP. In addition, impacts of repair thickness, internal pressure and defect depth on repair results were analyzed. The results indicate the following conclusions. First, the pressure-bearing capacity of pipeline with circular pit defects or curvature surface defects can be restored by AFRP. Second, by increasing the thicknesses of AFRP, the circumferential stress of defective pipeline can be reduced effectively. With further increases in AFRP thickness, circumferential stress tends to reduce at a lower rate. Third, when the Mises stress of defective parts in repaired pipeline is lower than the yield strength, the smaller the internal pressure is, the better the repair results will be.

关 键 词：芳纶纤维复合材料 缺陷管道 修复 仿真 

分 类 号：TE973[石油与天然气工程—石油机械设备]