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[1]杨辉,臧红,王富祥,等.基于有限元的管道凹陷回弹与回圆分析*[J].中国安全生产科学技术,2024,20(4):163-171.[doi:10.11731/j.issn.1673-193x.2024.04.023]
　YANG Hui,ZANG Hong,WANG Fuxiang,et al.Springback and rerounding analysis of pipe dent based on finite element[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(4):163-171.[doi:10.11731/j.issn.1673-193x.2024.04.023]
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基于有限元的管道凹陷回弹与回圆分析*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
20
期数:
2024年4期
页码:
163-171
栏目:
职业安全卫生管理与技术
出版日期:
2024-04-30

文章信息/Info

Title:
Springback and rerounding analysis of pipe dent based on finite element
文章编号:
1673-193X(2024)-04-0163-09
作者:
杨辉; 臧红; 王富祥; 张银辉
（1.国家管网集团科学技术研究总院分公司，河北 廊坊 065000；
2.新奥科技发展有限公司，河北 廊坊 065000）
Author(s):
YANG Hui;  ZANG Hong;  WANG Fuxiang;  ZHANG Yinhui
(1.PipeChina Institute of Science and Technology,Langfang Hebei 065000,China;
2.ENN Science & Technology Development Co.,Ltd.,Langfang Hebei 065000,China)
关键词:
凹陷; 回弹; 回圆; 有限元; 非线性回归; 内检测
Keywords:
dent;  springback;  rerounding;  finite element;  nonlinear regression;  internal inspection
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2024.04.023
文献标志码:
A
摘要:
为了明确回弹与回圆行为对管道结构完整性的影响，解决不同约束状态下管道凹陷适用性评价结果的差异性问题，建立模拟3种管型在2类压头作用下凹陷成型-回弹-回圆全过程的三维有限元模型，系统地探讨管型、管径、壁厚、压头类型、压头尺寸、凹陷位置、螺距等对凹陷回弹率和回圆率的影响，采用非线性回归函数拟合得出不同类型管道回弹系数和回圆系数经验公式。研究结果表明：凹陷的回弹与回圆行为受管道结构刚度、凹陷形貌、尺寸、位置及内压等多因素影响，导致不同约束状态下凹陷变形历程和评价保守性差异；误差分析显示拟合预测精度较好。研究结果可用于基于内检测的凹陷深度的预测与评价。
Abstract:
In order to clarify the influence of springback and rerounding behavior on the structural integrity of pipeline,and solve the difference in the suitability evaluation results of pipe dents under different constraints,a three-dimensional finite element model was established to simulate the whole process of dent forming-springback-rerounding of three kinds of pipe types under the action of two kinds of indenter.The influence of pipe type,pipe diameter,wall thickness,indenter type,indenter size,dent position and pitch on the springback and rerounding rate of dent was analyzed,and the empirical formulas of springback coefficient and rerounding coefficient of different types of pipeline were obtained by using the nonlinear regression function fitting.The results show that the springback and rerounding behavior of dent are affected by multiple factors such as pipe structure stiffness,dent shape,size,position and internal pressure,which leads to the difference in the deformation history and evaluation conservatism of dent under different constraints.The error analysis presents that the accuracy of fitting prediction is good.The research results can be used for the prediction and evaluation of dent depth based on internal inspection.

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相似文献/References:

[1]帅义,帅健,罗小俊,等.长输管道凹陷提压回圆评价方法[J].中国安全生产科学技术,2019,15(2):70.[doi:10.11731/j.issn.1673-193x.2019.02.011]
　SHUAI Yi,SHUAI Jian,LUO Xiaojun,et al.Evaluation method of rerounding by pressure increase for dent on longdistance pipeline[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(4):70.[doi:10.11731/j.issn.1673-193x.2019.02.011]

备注/Memo

备注/Memo:
收稿日期： 2023-11-23
* 基金项目： 国家管网集团科学技术研究总院科学研究与技术开发项目（ZYZL-AQWH-202206）；国家管网集团北方管道有限责任公司科学研究与技术开发项目（20210207）
作者简介： 杨辉，硕士，高级工程师，主要研究方向为油气管道检测、评价、维修与失效分析。
更新日期/Last Update: 2024-05-09