[1]晁利宁,等.直缝埋弧焊管焊接残余应力的数值模拟■[J].焊管,2015,38(8):24-28.[doi:1001-3938(2015)08-0024-05]
 CHAO Lining,BI Zongyue,YU Han,et al.Numerical Simulation of SAWL Pipe Welding Residual Stress[J].,2015,38(8):24-28.[doi:1001-3938(2015)08-0024-05]
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直缝埋弧焊管焊接残余应力的数值模拟■
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
38
期数:
2015年第8期
页码:
24-28
栏目:
应用与开发
出版日期:
2015-08-28

文章信息/Info

Title:
Numerical Simulation of SAWL Pipe Welding Residual Stress
文章编号:
1001-3938(2015)08-0024-05
作者:
晁利宁1 2毕宗岳1 2余 晗1 2张晓峰1 2鲜林云1 2张国超1 2徐 凯1 2梁 航1 2
1. 国家石油天然气管材工程技术研究中心, 陕西 宝鸡721008;
2. 宝鸡石油钢管有限责任公司 钢管研究院, 陕西 宝鸡 721008
Author(s):
CHAO Lining12 BI Zongyue12 YU Han12 ZHANG Xiaofeng12 XIAN Linyun12ZHANG Guochao12 XU Kai12 LIANG Hang12
1.Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods, Baoji 721008,Shaanxi, China;
2. Steel Pipe Research Institute, Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, Shaanxi, China
关键词:
直缝焊管埋弧焊生死单元温度场残余应力场
Keywords:
SAWL pipe SAW birth-death element temperature field residual stress field
分类号:
TG404
DOI:
1001-3938(2015)08-0024-05
文献标志码:
A
摘要:
直缝焊管焊接过程中产生的焊接应力和变形会影响焊管的使用性能和寿命。应用大型通用软件ABAQUS,基于双椭球热源模型,利用“生死单元”技术,模拟了直缝焊管多丝埋弧焊的内外焊
接过程,描述了准稳态温度场和残余应力场计算数值及其在整个管体上的分布情况。结果表明,在焊接过程中焊缝附近温度梯度很大,在远离焊缝的地方温度梯度渐渐趋于平缓;随着热源的移动,温度中心也随之移动,最高温度可达母材的熔点。焊后残余应力主要分布在焊缝附近,管体在其他部位应力很小,最大残余应力为528 MPa;纵向残余应力在焊缝及热影响区表现为拉应力,并且最大值位于焊缝长度中心截面上;在圆周上表现出拉应力并伴有逐渐变小的趋势。
Abstract:
The welding stress and deformation produced during SAWL pipe welding process affect the performance and working life of pipe. By using general finite element method(FEM) software ABAQUS, based on double-ellipsoid heat source model, to simulate the inside and outside welding process of SAWL pipe through the“ birth-death element” technology, and described the distribution of quasi-steady temperature field and residual stress field on the whole pipe body. The results indicated that during welding process, the temperature gradient near weld is large; it is tend to smooth transition far away from the weld. With welding heat source moving, the temperature center also move, the highest temperature can reach the melting point of base metal. The residual stress after welding mainly distributed near weld, the residual stress in other parts of pipe is small, and the largest value of residual stress is 528 MPa. The longitudinal residual stress in weld and HAZ show tensile stress. On the circumferential direction, the longitudinal residual stress show tensile stress and accompanied by the trend of gradually smaller.

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备注/Memo

备注/Memo:
收稿日期:2015-01-06
修改稿收稿日期:2015-04-13
基金项目:中国石油天然气股份有限公司科学研究与技术开发项目“超高强度油气输送管材关键技术研究—X90/X100高压输气焊管技术研究”(项目号2012E280104)。
作者简介:晁利宁(1986—),女,工学硕士,主要从事焊接成型过程的力学行为以及焊接结构断裂失效研究。
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