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材料工程  2013, Vol. 0 Issue (4): 34-38    DOI: 10.3969/j.issn.1001-4381.2013.04.007
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
考虑相变的铝合金管焊接残余应力数值模拟
廖娟, 凌泽民, 彭小洋
重庆大学 材料科学与工程学院,重庆 400044
Numerical Simulation of Residual Stresses for Aluminum Alloy Pipe Incorporating Metallurgical Phase Transformation
LIAO Juan, LING Ze-min, PENG Xiao-yang
School of Materials Science and Engineering,Chongqing University,Chongqing 400044,China
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摘要 以铝合金薄壁管的对接接头为研究对象,根据实际情况建立了其热-冶金-力学耦合的三维有限元模型,运用SYSWELD软件在考虑相变情况下对其焊接过程温度场与轴向和环向残余应力分布进行数值计算与分析,与实验结果进行对比验证了该模型的准确性。此外,还分析了铝合金管半径变化对残余应力分布的影响规律。结果表明:相变对轴向最大拉应力与环向最大拉应力和压应力都有明显的影响,且考虑相变能更准确地模拟轴向和环向残余应力;在考虑相变情况下,焊接残余应力随半径的增大而增加;并且在不同的半径条件下,距焊缝中心不同距离上的应力分布有着一致的变化趋势。
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廖娟
凌泽民
彭小洋
关键词 铝合金相变残余应力数值模拟    
Abstract:Based on the butt joint of thin-walled aluminum alloy pipe, according to the practical situation, three-dimensional thermal, metallurgical and mechanical finite element model was established. The temperature field during welding process, axial and hoop residual stresses of circumferential welds incorporating metallurgical phase transformation were simulated by using SYSWELD software. The model was accurately predict the welding residual stresses and the results coincided with experiment. In addition, the effects of pipe diameter on residual stresses were investigated. The results showed that affected metallurgical phase transformation on the maximum axial tensile stress and maximum hoop tensile stress and compressive stress, and models with metallurgical phase transformation can simulate axial and hoop stresses more accurately; considering phase transformation, the residual stresses increased with increasing the radius, and residual stresses with different radii have a similar trend.
Key wordsaluminum alloy    phase transformation    residual stress    numerical simulation
收稿日期: 2012-01-07      出版日期: 2013-04-20
中图分类号: 

TG457.14

 
作者简介: 廖娟(1987-),女,硕士研究生,从事金属焊接与焊接数值模拟的研究,联系地址:重庆市沙坪坝区重庆大学A区五舍265室(400044),E-mail:juanzilz@163.com
引用本文:   
廖娟, 凌泽民, 彭小洋. 考虑相变的铝合金管焊接残余应力数值模拟[J]. 材料工程, 2013, 0(4): 34-38.
LIAO Juan, LING Ze-min, PENG Xiao-yang. Numerical Simulation of Residual Stresses for Aluminum Alloy Pipe Incorporating Metallurgical Phase Transformation. Journal of Materials Engineering, 2013, 0(4): 34-38.
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http://jme.biam.ac.cn/CN/10.3969/j.issn.1001-4381.2013.04.007      或      http://jme.biam.ac.cn/CN/Y2013/V0/I4/34
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