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[1]江金旭　张宏　顾磊　张东　吴锴　刘啸奔.高钢级管道环焊缝表观断裂韧性的影响因素数值模拟[J].油气储运,2022,41(03):1-7.
　JIANG Jinxu,ZHANG Hong,GU Lei,et al.Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines[J].Oil & Gas Storage and Transportation,2022,41(03):1-7.
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高钢级管道环焊缝表观断裂韧性的影响因素数值模拟

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 41 期数: 2022年03期 页码: 1-7 栏目: 出版日期: 2022-03-25
Title:

Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines

作者:

江金旭　张宏　顾磊　张东　吴锴　刘啸奔

Author(s):

JIANG Jinxu;  ZHANG Hong;  GU Lei;  ZHANG Dong;  WU Kai;  LIU Xiaoben

关键词:

高钢级管道; SENB试样; 环焊缝; 表观断裂韧性; 数值模拟

Keywords:

high-grade steel pipelines;  SENB specimens;  girth welds;  apparent fracture toughness;  numerical simulation

分类号:
TE832
文献标志码:
A
摘要:

为准确表征高钢级管道环焊缝与小尺寸试样表观断裂韧性的关联性，基于微观材料损伤力学理论，采用有限元方法，开展了含裂纹型缺陷管道环焊缝及小尺寸单边切口梁（Single Edge Notch Beam，SENB）试样的断裂数值模拟分析。通过提取SENB试样的裂纹尖端张开位移（Crack Tip Opening Displacement，CTOD）得到了较准确的基于小尺寸试样韧性测试结果的高钢级管道环焊缝表观断裂韧性量化方法，定量研究了管径、壁厚、裂纹长度及裂纹深度对高钢级管道环焊缝表观断裂韧性的影响规律。通过对比不同工况参数下高钢级管道环焊缝表观断裂韧性与小尺寸试样表观断裂韧性的差异，得到两者之间相对准确的转化系数。结果表明：管径对高钢级管道环焊缝材料的表观断裂韧性及其转化系数的影响相对较小；表观断裂韧性转化系数随管道壁厚的增加而增大，随裂纹长度及深度的增加而减小；相对于其他影响因素，裂纹深度对高钢级管道环焊缝表观断裂韧性的影响相对较明显；基于表观断裂韧性转化系数能够得到相对准确的高钢级管道环焊缝表观断裂韧性。研究成果可为高钢级管道环焊缝表观断裂韧性的准确表征提供理论参考。

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[1]吴宏　周剑琴.国内大口径、高钢级管道焊接及焊缝检测技术[J].油气储运,2016,35(预出版):1.
　WU Hong,ZHOU Jianqin.Welding and weld testing technology for large-diameter high-grade pipelines in China[J].Oil & Gas Storage and Transportation,2016,35(03):1.
[2]吴宏,周剑琴.国内大口径、高钢级管道焊接及焊缝检测技术现状[J].油气储运,2017,36(1):21.[doi:10.6047/j.issn.1000-8241.2017.01.003]
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[3]沙胜义 冯庆善 燕冰川 任凯 张海亮 陈健.高钢级管道环焊缝安全评价研究进展[J].油气储运,2020,39(中俄东线):1.[doi:10.6047/j.issn.1000-8241.2020.00.000]
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[5]江金旭,张宏,顾磊,等.高钢级管道环焊缝表观断裂韧性影响因素数值模拟[J].油气储运,2022,41(03):281.[doi:10.6047/j.issn.1000-8241.2022.03.005]
　JIANG Jinxu,ZHANG Hong,GU Lei,et al.Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines[J].Oil & Gas Storage and Transportation,2022,41(03):281.[doi:10.6047/j.issn.1000-8241.2022.03.005]

更新日期/Last Update: 2022-01-19