含腐蚀缺陷X70钢剩余强度分析
Analysis of Residual Strength of X70 Pipeline Steel with Corrosion Defects
摘 要
采用ABAQUS有限元数值计算方法, 分析了含腐蚀缺陷X70管道的剩余强度。根据相关标准的失效准则, 研究了腐蚀的发展规律, 并考虑到双腐蚀缺陷对管道剩余强度的影响。结果表明,对于双腐蚀缺陷, 管道剩余强度随着两腐蚀轴向间距的增大而增大, 最后趋于稳定; 管道剩余强度随着两腐蚀缺陷径向夹角的增大而增大, 最后趋于稳定。研究结果对于管道的安全运行和维护具有重要的作用。
腐蚀
剩余强度
有限元分析
X70 pipeline steel
corrosion
residual strength
finite element analysis
Abstract
ABAQUS finite element method(FEM) was employed to analyze the residual strength of X70 pipeline with corrosion defects. According to relative failure criteria, the corrosion development law was studied. The results showed that for a pipeline with two corrosion defects, the residual strength increased as the axis distance of two corrosion defects increased. The residual strength increased with the increase of radial angle of two corrosion defects. The results is important to the pipeline′s safe operation and maintenance.
中图分类号 TG174
所属栏目 应用技术
基金项目
收稿日期 2010/5/4
修改稿日期 2010/5/31
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引用该论文: CHEN Ping-wei,WANG Feng-hui,WANG Shao-ming. Analysis of Residual Strength of X70 Pipeline Steel with Corrosion Defects[J]. Corrosion & Protection, 2011, 32(2): 150
被引情况:
【1】陈兆雄,吴明,谢飞,王丹,郭强,马菲, "腐蚀管道剩余强度的评价方法及剩余寿命预测",机械工程材料 39, 97-101(2015)
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参考文献
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【2】ANSI/ASME B31G. Manual for determining the remaining strength of corroded pipelines[S]. American Society of Mechanical Engineers.
【3】王禹钦,王维斌,冯庆善. 腐蚀管道的剩余强度评价[J]. 腐蚀与防护,2008,29(1):28-31.
【4】刘颖,廖柯熹,刘长林,等. 含腐蚀缺陷管道的剩余强度评价方法[J]. 天然气与石油,2008,26(2):41-44.
【5】赵新伟,罗金恒,路明旭. 含腐蚀缺陷管道剩余强度的有限元法分析[J]. 油气储运,2001,20(3):18-21.
【6】Chouchaoui B A,Pick R J. Behavior of circumferentially aligned corrosion pit[J]. International Journal of Pressure Vessels and Pipeline,1994,57:197-200.
【7】郑修麟. 材料的力学性能[M]. 西安:西北工业大学出版社,1995.
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