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[1]李建,周昌玉.复杂载荷下弯管的极限载荷[J].南京工业大学学报(自然科学版),2014,36(06):83-87.[doi:10.3969/j.issn.1671-7627.2014.06.015]
 LI Jian,ZHOU Changyu.Limit loads for elbows under complex load conditions[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(06):83-87.[doi:10.3969/j.issn.1671-7627.2014.06.015]
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复杂载荷下弯管的极限载荷()
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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:
36
期数:
2014年06期
页码:
83-87
栏目:
出版日期:
2014-11-21

文章信息/Info

Title:
Limit loads for elbows under complex load conditions
文章编号:
1671-7627(2014)06-0083-05
作者:
李建周昌玉
南京工业大学 机械与动力工程学院,江苏 南京 211800
Author(s):
LI JianZHOU Changyu
School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
弯管 面内弯矩 内压 极限载荷 有限元
Keywords:
pipe bends in-plane bending internal pressure limit load finite element
分类号:
TQ055.8
DOI:
10.3969/j.issn.1671-7627.2014.06.015
文献标志码:
A
摘要:
考虑几何和材料的非线性相互作用,采用有限元方法研究复杂载荷下弯管的极限载荷。通过对比过去的研究成果,分析了内压、面内弯矩及其组合下的极限载荷规律。根据有限元结果,研究了直管强化及内压的强化对极限载荷的影响。最后提出了弯矩以及内压、弯矩联合作用下的极限压力、极限弯矩与弯管几何尺寸的定量关系。提出的计算公式扩大了弯曲系数λ的使用范围,反映了弯管强化作用。
Abstract:
The limit loads for elbows under complex load conditions were obtained from finite element(FE)analysis based on both material nonlinearity and geometry nonlinearity effects.By comparing the literature results,the limit loads for different load cases of internal pressure,in-plane bending and their combination were discussed,respectively.The stiffening effect of attached straight pipes and the stiffening effect of the internal pressure were investigated based on the finite element(FE)results.The estimated expressions for elbows subject to bending and combined loads were proposed.It enlarged the applicable ranges of the bending characteristic λ,and revealed the stiffening effects of pipe elbows.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-06-28
基金项目:江苏省自然科学基金(BK2008373)
作者简介:李建(1989—),男,江苏扬州人,硕士,主要研究方向为压力管道的可靠性及寿命预测; 周昌玉(联系人),教授, Email: changyu_zhou@163.com..
更新日期/Last Update: 2014-11-20