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错边对钢悬链立管横焊接头疲劳性能的影响

王震, 程方杰, 张彦燊, 邵珠晶, 王东坡

王震, 程方杰, 张彦燊, 邵珠晶, 王东坡. 错边对钢悬链立管横焊接头疲劳性能的影响[J]. 焊接学报, 2019, 40(3): 123-127. DOI: 10.12073/j.hjxb.2019400084
引用本文: 王震, 程方杰, 张彦燊, 邵珠晶, 王东坡. 错边对钢悬链立管横焊接头疲劳性能的影响[J]. 焊接学报, 2019, 40(3): 123-127. DOI: 10.12073/j.hjxb.2019400084
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WANG Zhen, CHENG Fangjie, ZHANG Yanshen, SHAO Zhujing, WANG Dongpo. Effect of misalignment on fatigue performance of horizontal welded joints in steel catenary riser system[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(3): 123-127. DOI: 10.12073/j.hjxb.2019400084
Citation: WANG Zhen, CHENG Fangjie, ZHANG Yanshen, SHAO Zhujing, WANG Dongpo. Effect of misalignment on fatigue performance of horizontal welded joints in steel catenary riser system[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(3): 123-127. DOI: 10.12073/j.hjxb.2019400084
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错边对钢悬链立管横焊接头疲劳性能的影响

  • 1. 天津大学 材料科学与工程学院，天津　300072;

  • 2. 天津市现代连接技术重点实验室，天津　300072

详细信息
    作者简介:

    王　震，男，1992年出生，硕士研究生. 主要从事焊接工艺和结构疲劳方面研究. 发表论文1篇. Email: wzhen@tju.edu.cn

    通讯作者:

    程方杰，男，教授. Email: chfj@tju.edu.cn

  • 中图分类号: TG 47

Effect of misalignment on fatigue performance of horizontal welded joints in steel catenary riser system

  • 1. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

  • 2. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300072, China

摘要

    摘要
  • 摘要: 采用填丝TIG方法进行了不同错边量的立管环缝横焊试验，对其接头试样在80，120和175 MPa应力范围下进行了疲劳试验，研究错边对横焊环缝接头疲劳性能的影响. 结果表明，错边方式对横焊接头疲劳裂纹起裂位置有重要影响，“上错边”接头的疲劳裂纹主要从根部焊趾上侧起裂，无错边接头的疲劳裂纹主要从根部焊趾下侧起裂，而“下错边”接头的疲劳裂纹则全部从根部焊趾下侧起裂；在相同应力范围下，试样的疲劳循环周次随错边量的增大而降低，当错边量超过0.60 mm后，疲劳循环周次会显著下降.
    Abstract: In order to investigate the effect of misalignment on the horizontal girth weld fatigue performance, the joints of steel catenary riser were welded by TIG welding with filler wire and the fatigue tests of the joints were carried out at the stress range of 80, 120 and 175 MPa, respectively. The results indicated that the misalignment mode has a significant influence on the fatigue cracking initiation position of horizontal welding joints. The fatigue crack of upper-misalignment-joint is almost from the upper side of the root toe, and the fatigue crack of joints without misalignment is mainly from the bottom of the root toe, besides, the fatigue crack of down-misalignment-joint is all from the bottom of the root toe. In addition, the fatigue endurance of the specimens is decreased continuously with the increase of the misalignment values at the same stress range, and which is reduced obviously when the misalignment values exceed 0.60 mm.
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    • 参考文献(14)
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出版历程
  • 收稿日期:  2017-10-03

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