辽宁石油化工大学学报

辽宁石油化工大学学报 ›› 2019, Vol. 39 ›› Issue (1): 71-76.DOI: 10.3969/j.issn.1672-6952.2019.01.014

• 机械工程 • 上一篇    下一篇

含未熔合缺陷的三通管安全性分析

李思雨张巨伟林海波   

  1. 辽宁石油化工大学 机械工程学院,辽宁 抚顺 113001
  • 收稿日期:2017-09-29 修回日期:2017-10-30 出版日期:2019-02-25 发布日期:2019-02-28
  • 通讯作者: 张巨伟(1962⁃),男,硕士,教授,从事安全工程、石油化工设备的安全评价等方面的研究;E⁃mail:z6682201@126.com。
  • 作者简介:李思雨(1991?),男,硕士研究生,从事压力容器、管道失效风险及剩余寿命评估方面的研究;E?mail: 2351745019@qq.com。

Safety Analysis of Three⁃Way Pipe with Lack of Fusion Defects

Li SiyuZhang JuweiLin Haibo   

  1. School of Mechanical Engineering,Liaoning Shihua University,Fushun Liaoning 113001,China
  • Received:2017-09-29 Revised:2017-10-30 Published:2019-02-25 Online:2019-02-28

摘要: 含三类不同未熔合缺陷的三通管件应力集中系数K的理论解析十分复杂。因此,采用有限元数值分析软件,建立在内压载荷作用下含所研究缺陷三通管的有限元模型,经过计算得出4个影响因素下的应力集中系数K及其变化规律。结果表明,含三类不同未熔合缺陷的三通管在肩部及领口区域应力集中系数K相对较大,且应力集中现象严重,应力集中系数K随缺陷的轴向长度、深度的增加而缓慢增大,随缺陷环向长度的增大而迅速减小。

关键词: 未熔合缺陷,  应力集中系数,  有限元分析,  三通管,  应力

Abstract: The theoretical analysis of the stress concentration factor K of three types of tubes with three different types of unfused defects is very complicated. In this paper, the finite element numerical analysis software is used to be established the finite element model of the three⁃way pipe with defects under the action of internal pressure. After calculation, the stress concentration factor K and its variation law under the four influencing factors are obtained. The results show that the stress concentration factor K of the three⁃way tube with three different unfused defects is relatively large in the shoulder and collar region, and the stress concentration is serious. The stress concentration factor K increased slowly with the increase of the axial length and depth of the defect, and decreased rapidly with the increase of the circumferential length of the defect.

Key words: Unfused defects, Stress concentration factor, Finite element analysis, Three?way pipe, Stress

引用本文

李思雨, 张巨伟, 林海波. 含未熔合缺陷的三通管安全性分析[J]. 辽宁石油化工大学学报, 2019, 39(1): 71-76.

Li Siyu, Zhang Juwei, Lin Haibo. Safety Analysis of Three⁃Way Pipe with Lack of Fusion Defects[J]. Journal of Liaoning Petrochemical University, 2019, 39(1): 71-76.

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