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铝合金平板搅拌摩擦焊接应力变形分析
引用本文:李红克,史清宇,王鑫,李亭,刘园. 铝合金平板搅拌摩擦焊接应力变形分析[J]. 焊接学报, 2008, 29(2): 81-84
作者姓名:李红克  史清宇  王鑫  李亭  刘园
作者单位:清华大学机械工程系,先进成形制造教育部重点实验室,北京,100084;清华大学机械工程系,先进成形制造教育部重点实验室,北京,100084;清华大学机械工程系,先进成形制造教育部重点实验室,北京,100084;清华大学机械工程系,先进成形制造教育部重点实验室,北京,100084
基金项目:致谢 研究项目得到863及EADS德国研究中心支持,相关试验在德国合作完成.在此对参与该项目的德方Jurgen Silvanus先生表示衷心感谢.
摘    要:针对6056-T6铝合金平板进行搅拌摩擦焊接和试板变形检测试验.并用数值方法对试板变形进行模拟,考察了模拟温度、应力场分布和试板变形情况,对试验和模拟温度、变形进行比较.结果表明,在文中条件下,沿焊缝长度方向试板产生下挠,最大变形量6.3 mm;沿试板宽度方向试板相对发生上拱,最大变形量4.5 mm,模拟与实测变形趋势非常吻合.纵向残余应力在焊缝中心线两侧非对称性分布,前进侧大于回转侧.

关 键 词:搅拌摩擦焊  焊接变形  数值模拟
文章编号:0253-360X(2008)02-0081-04
收稿时间:2007-05-09
修稿时间:2007-05-09

Residual stress and distortion of Al alloy panels welded by FSW
LI Hongke,SHI Qingyu,WANG Xin,LI Ting and LIU Yuan. Residual stress and distortion of Al alloy panels welded by FSW[J]. Transactions of The China Welding Institution, 2008, 29(2): 81-84
Authors:LI Hongke  SHI Qingyu  WANG Xin  LI Ting  LIU Yuan
Affiliation:Department of Mechanical Engineering, Key Laboratory for Advanced Materials Processing Technology Ministry of Education, Tsinghua University, Beijing 100084, China,Department of Mechanical Engineering, Key Laboratory for Advanced Materials Processing Technology Ministry of Education, Tsinghua University, Beijing 100084, China,Department of Mechanical Engineering, Key Laboratory for Advanced Materials Processing Technology Ministry of Education, Tsinghua University, Beijing 100084, China,Department of Mechanical Engineering, Key Laboratory for Advanced Materials Processing Technology Ministry of Education, Tsinghua University, Beijing 100084, China and Department of Mechanical Engineering, Key Laboratory for Advanced Materials Processing Technology Ministry of Education, Tsinghua University, Beijing 100084, China
Abstract:FSW 6056-T6 Al alloy panel was welded by FSW and its distortion was measured.Also numerical model was established to simulate the distortion, temperature field and stress fields. The simulated temperature and distortion were compared with those of experiments.The results indicated that the panel bent down along welding direction and maximum distortion reaches 6.3 mm.Along the transverse direction, the panel bent up relatively to the longitudinal sides and the maximum displacement was 4.5 mm.There were high accordance trends of simulated distortion to the experiment.The longitudinal residual stress was asymmetric with the weld center line and it is higher on advancing side.
Keywords:friction stir welding  welding distortion  numerical simulation
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