|本期目录/Table of Contents|

[1]康习锋,张宏,罗茜,等.初始几何缺陷对埋地管道屈曲临界载荷影响研究[J].中国安全生产科学技术,2015,11(10):23-27.[doi:10.11731/j.issn.1673-193x.2015.10.004]
　KANG Xi-feng,ZHANG Hong,LUO Xi,et al.Influence of initial geometric imperfection on critical load of buckling in buried pipeline[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(10):23-27.[doi:10.11731/j.issn.1673-193x.2015.10.004]
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初始几何缺陷对埋地管道屈曲临界载荷影响研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年10期
页码:
23-27
栏目:
学术论著
出版日期:
2015-10-30

文章信息/Info

Title:
Influence of initial geometric imperfection on critical load of buckling in buried pipeline
文章编号:
1673-193X(2015)-10-0023-05
作者:
康习锋1; 2; 张宏1; 罗茜1; 刘啸奔1
（1. 中国石油大学 机械与储运学院，北京 100022；2. 中国人民武装警察部队学院 消防指挥系, 河北廊坊 065000）
Author(s):
KANG Xi-feng1; 2;  ZHANG Hong1;  LUO Xi1;  LIU Xiao-ben1
（1.Mechanical and Transportation Engineering college ,China University of Petroleum (Beijing),Beijing 102249, China;2. Department of Fire Commanding, Chinese People’s Armed Police Forces Academy, Langfang Hebei 065000, China）
关键词:
埋地管道; 屈曲; 临界载荷; 有限元
Keywords:
buried pipeline;  buckling;  critical load;  finite element
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2015.10.004
文献标志码:
A
摘要:
管道初始几何缺陷与屈曲临界载荷间的关系已经成为新的研究方向。利用有限元方法对管道初始几何缺陷与临界载荷的关系进行研究，建立管道模型，在特征值屈曲分析基础上，输入不同比例的几何缺陷，逐个分析管道模型中节点的横向位移情况。结果显示，当几何缺陷达到一定程度时，屈曲临界载荷明显降低，且与初始几何缺陷具有线性相关性，利用Matlab对结果作线性拟合，给出了修正后的屈曲临界载荷公式。
Abstract:
The correlation between initial geometric imperfection and critical load of buckling has become a new research direction, which was investigated through finite element method in this paper. The model of pipeline was established. Based on the eigenvalue analysis of buckling, through inputting the geometric imperfection with different scale, the traverse displacements of nodes in the pipeline model were analyzed respectively. The results showed that when the geometric imperfection reaches a certain extent, the critical load of buckling decreases obviously and has a linear correlation with the initial geometric imperfection. The linear fitting was conducted on the results by Matlab, and the modified formula for critical load of buckling was presented.

参考文献/References:

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2015-12-01