[1]王 虎.预拉伸对铝合金管体焊接残余应力和变形影响的数值模拟[J].焊管,2008,31(6):19-21.[doi:1001-3938(2008)06-0019-03]
 WANG Hu,LI Jing-yong,LIU Zhi-peng.Digital Simulation of Residual Stress and Deformation Affection of Pretensile to Aluminum Alloy Barrel Welding[J].,2008,31(6):19-21.[doi:1001-3938(2008)06-0019-03]
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预拉伸对铝合金管体焊接残余应力和变形影响的数值模拟
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
31
期数:
2008年第6期
页码:
19-21
栏目:
试验与研究
出版日期:
2008-11-28

文章信息/Info

Title:
Digital Simulation of Residual Stress and Deformation Affection of Pretensile to Aluminum Alloy Barrel Welding
文章编号:
1001-3938(2008)06-0019-03
作者:
王 虎
(江苏科技大学 材料科学与工程学院)
Author(s):
WANG HuLI Jing-yongLIU Zhi-peng
关键词:
焊接模拟残余应力残余变形
Keywords:
welding simulationresidual stressresidual deformation
分类号:
TG404
DOI:
1001-3938(2008)06-0019-03
文献标志码:
A
摘要:
利用ANSYS软件模拟厚度为4 mm的7075铝合金管体试件在有预拉伸应力和无预拉伸应力作用下的焊接。结果表明:预拉伸焊接法可有效减小铝合金管体焊后的残余应力和变形。预拉伸应力抵消了部分焊接区热膨胀产生的压缩应力,从而减小了压缩塑性变形,进而减小了冷却时焊接区域的拉伸应力,相应地远离焊缝区域的压缩应力也随之减小。
Abstract:
The 7075 aluminum alloy barrel with 4 mm thickness of welding tests under prestretching stress and non-predrawing were respectively simulated by ANSYS software.The results show that welding residual stress and deformation of aluminum alloy barrel was reduced remarkably by pre-tensile welding method. Compressive stress caused by thermal expansion in thermal area was offset partially by pre-tensile stress and compression plastic deformation was also decreased.Thereby,the tensile stress over welding zone was reduced when cooling and the compressive stress far from weld seam was diminished accordingly.

参考文献/References:

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备注/Memo

备注/Memo:
王虎(1974-),男,汉族,江苏南通人,硕士研究生,主要研究方向是焊接结构和变形。
收稿日期:2008-01-02
更新日期/Last Update: