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[1]孙志刚,贺小华,周昌玉.含内双凹坑高温压力管道面内极限弯矩[J].南京工业大学学报(自然科学版),2013,35(02):91-94.[doi:10.3969/j.issn.1671-7627.2013.02.018]
 SUN Zhigang,HE Xiaohua,ZHOU Changyu.In-plane limit bending moment analysis of pressure pipe with internal double pits at high temperature[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(02):91-94.[doi:10.3969/j.issn.1671-7627.2013.02.018]
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含内双凹坑高温压力管道面内极限弯矩()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年02期
页码:
91-94
栏目:
出版日期:
2013-03-20

文章信息/Info

Title:
In-plane limit bending moment analysis of pressure pipe with internal double pits at high temperature
文章编号:
1671-7627(2013)02-0091-04
作者:
孙志刚贺小华周昌玉
南京工业大学 机械与动力工程学院,江苏 南京 211800
Author(s):
SUN Zhigang HE Xiaohua ZHOU Changyu
College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 211800, China
关键词:
高温管道 双凹坑 干涉 有限元 极限弯矩
Keywords:
high temperature pipe double pits interaction finite element limit bending moment
分类号:
TQ055.8
DOI:
10.3969/j.issn.1671-7627.2013.02.018
文献标志码:
A
摘要:
采用有限元分析方法,基于蠕变应变准则,分析了含内双凹坑高温压力管道面内极限弯矩,确定凹坑发生干涉的距离。与凹坑干涉对极限内压的影响结果进行比较表明,干涉对极限内压的影响较对极限弯矩的影响更为显著。2%和5%蠕变应变准则得到的凹坑干涉结果表明,蠕变应变准则对结果影响不大,采用2%蠕变应变准则是可行的。
Abstract:
In-plane limit bending moments of pressure pipes with internal double pits and those with one pit at high temperature were analyzed based on the restriction of 2% total strain by finite element analysis method and the critical interactive separations were determined. The influence of double pits on the limit pressure of high temperature pipe was compared with that on the limit moment.Results showed that the influence of double pits on the limit bending moment of high temperature pipe was less than that on the limit bending moment.The influence of double pits on the limit load of high temperature pipe based on the restriction of 5% total strain had be determined and it was compared with that based on the restriction of 2% total strain. It showed that two kinds of results had little difference, thus the method based on the restriction of 2% total strain was feasible.

参考文献/References:

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相似文献/References:

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 SHENG Jian-wen,HE Xiao-hua,XUE Ji-lin,et al.Creep stress analysis of pressure pipe with spherical pit at high temperature[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2010,32(02):46.
[2]顾海明,黄振仁,廖传华.高温压力管道的柔性问题[J].南京工业大学学报(自然科学版),2000,22(06):14.
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备注/Memo

备注/Memo:
收稿日期:2012-02-23
基金项目:江苏省自然科学基金(KB2008373)
作者简介:孙志刚(1987—),男,安徽阜阳人,硕士,主要研究方向为高温压力管道安全评价; 贺小华(联系人),教授,Email:xh_he@njut.edu.cn..
更新日期/Last Update: 2013-03-31