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| 管线钢在役焊接接头残余应力的数值模拟 | |
| 引用本文： | 李美艳,王勇,宋立新,韩涛.管线钢在役焊接接头残余应力的数值模拟[J].焊管,2011,34(7):18-22. |
| 作者姓名： | 李美艳 王勇 宋立新 韩涛 |
| 作者单位： | 1. 中国石油大学(华东),机电工程学院,山东,东营,257061 2. 中国石油大学(华东)机电工程学院,山东,东营,257061 3. 海洋石油工程(青岛)有限公司,山东,青岛,266520 |
| 摘 要： | 采用SYSWELD焊接模拟软件对X70管线钢在役焊接接头残余应力进行模拟,主要考察焊接工艺、在役条件和管道结构对X70压力管线在役焊接接头残余应力的影响规律.结果表明:在役焊接接头的残余应力更为复杂,且大于常规焊接.随着焊接热输入量的增加,在役焊接接头残余应力增大;增加运行管线内介质流速,接头残余应力减小;随着管道压力... |
| 关 键 词： | 在役焊接 残余应力 数值模拟 SYSWELD |
Numerical Simulation of Residual Stress for Pipeline Steel In-service Welded Joints |
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| LI Mei-yan,WANG Yong,SONG Li-xin,HAN Tao.Numerical Simulation of Residual Stress for Pipeline Steel In-service Welded Joints[J].Welded Pipe and Tube,2011,34(7):18-22. | |
| Authors: | LI Mei-yan WANG Yong SONG Li-xin HAN Tao |
| Affiliation: | 1(1.College of Electromechanical Engineering,China University of Petroleum,Dongying 257061,Shandong,China;2.Offshore Oil Engineering(Qingdao) Co.,Ltd.,Qingdao 266520,Shandong,China) |
| Abstract: | The residual stress of X70 pipeline steel in-service welded joints was simulated by adopting SYSWELD software,the influence on the said welded joints residual stress of X70 pressure pipeline was studied from welding process,in-service condition and pipeline structure.The results showed that the residual stress of in-service welded joints is more complex and greater than that of conventional welding.With the heat input increasing,the residual stress of in-service welded joints increases;the flow velocity of pipeline medium increasing,the residual stress reduces.Along with pipeline pressure and outside diameter increasing,the axial residual stress near weld area reduces and the circumferential residual stress increases. |
| Keywords: | in-service welding residual stress numerical simulation SYSWELD |
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