[1]洪昌,霍玉双,*,等.焊接顺序对工字梁焊接变形影响的数值计算[J].山东建筑大学学报,2019,34(02):32-36.[doi:10.12077/sdjz.2019.02.006]
 HONG Chang,HUO Yushuang*,SUN Gaochao,et al.Numerical simulation of influence of welding sequence on welding deformation in Ibeam[J].Journal of Shandong jianzhu university,2019,34(02):32-36.[doi:10.12077/sdjz.2019.02.006]
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焊接顺序对工字梁焊接变形影响的数值计算()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
34
期数:
2019年02期
页码:
32-36
栏目:
研究论文
出版日期:
2019-04-15

文章信息/Info

Title:
Numerical simulation of influence of welding sequence on welding deformation in Ibeam
文章编号:
1673-7644(2019)02-0032-05
作者:
洪昌1霍玉双1*孙高超1胡庆贤2
(1.山东建筑大学 材料科学与工程学院,山东 济南 250101; 2.江苏科技大学 材料科学与工程学院,江苏 镇江 212033)
Author(s):
HONG Chang HUO Yushuang* SUN Gaochao et al
(School of Material Science and Engineering, Shandong Jianzhu University, Jinan 250101, China)
关键词:
焊接顺序焊接变形数值计算残余应力
Keywords:
welding sequence welding deformation numerical simulation residual stress
分类号:
TG404
DOI:
10.12077/sdjz.2019.02.006
文献标志码:
A
摘要:
制定合理的焊接顺序方案可以减弱工字梁焊接过程中的焊接变形,减少焊后对变形矫正所需的时间和生产成本,优化焊接生产工艺。文章设计了4种不同焊接顺序的方案,采用SYSWELD软件计算了工字梁焊后1 h的应力场,并对比分析焊后工字梁中变形及残余应力的分布,研究了焊接顺序对焊接变形及残余应力的影响规律。结果表明:不同焊接顺序对焊接变形及焊后残余应力分布的影响差异不大,焊接变形主要发生在翼板600~700 mm位置处,焊后残余应力主要集中在焊缝区及近缝区;从最大焊接变形量和残余纵向应力峰值来看,采用腹板两侧焊缝同时焊接为最佳方案,最大变形量仅为0.62 mm,而其他焊接方案产生的焊接变形量约为最小变形量的2倍,此方案残余应力虽然相比其他方案的峰值较大,但每种方案焊后残余应力主要为拉应力,均需要进行焊后消应力处理。
Abstract:
Making a reasonable welding sequence scheme can reduce the welding deformation of Ibeam in the welding process, reduce the time and production cost required for deformation correction after welding, and have guiding significance for welding production. This paper calculates the stress field of Ibeams 1 hour after welding in different welding sequence by using SYSWELD software, compares and analyzes the distribution of deformation and residual stress in Ibeams after welding, and studies the influence of welding sequence on welding deformation and residual stress. The results show that the influence of different welding sequence on the welding deformation and the welding residual stress distribution is not significant. The welding deformation mainly occurs in the 600~700 mm position of the wing plate, and the welding residual stress is mainly concentrated in the weld zone and the near weld zone. From the maximum welding deformation and residual longitudinal stress peak value, the best scheme is to weld both sides of the web simultaneously, the maximum deformation is 0.62 mm, while the welding deformation generated by other welding schemes is about twice the minimum deformation. Although the peak value of residual stress is larger than other schemes, the residual stress after welding of each scheme is mainly tensile stress, which requires postwelding stress elimination treatment.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-02-11基金项目:国家自然科学基金项目(51675249)作者简介:洪昌(1992-),男,在读硕士,主要从事焊接数值模拟等方面的研究.Email: hc2301@126.com通讯作者*:霍玉双(1973-),女,副教授,博士,主要从事焊接数值模拟等方面的研究.E-mail:hys6789@126.com
更新日期/Last Update: 2019-05-05