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Q345钢对接接头残余应力与变形的预测

蔡建鹏, 孙加民, 夏林印, 邓德安

蔡建鹏, 孙加民, 夏林印, 邓德安. Q345钢对接接头残余应力与变形的预测[J]. 焊接学报, 2015, 36(11): 61-64,68.
引用本文: 蔡建鹏, 孙加民, 夏林印, 邓德安. Q345钢对接接头残余应力与变形的预测[J]. 焊接学报, 2015, 36(11): 61-64,68.
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CAI Jianpeng, SUN Jiamin, XIA Linyin, Deng Dean. Prediction on welding residual stress and deformation in Q345 steel butt-welded joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(11): 61-64,68.
Citation: CAI Jianpeng, SUN Jiamin, XIA Linyin, Deng Dean. Prediction on welding residual stress and deformation in Q345 steel butt-welded joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(11): 61-64,68.
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Q345钢对接接头残余应力与变形的预测

  • 1.

    重庆大学 材料科学与工程学院, 重庆 400045

  • 2.

    重庆大学 材料科学与工程学院, 重庆 400045;中建钢构有限公司, 深圳 518040

基金项目: 国家自然科学基金资助项目(51275544)

Prediction on welding residual stress and deformation in Q345 steel butt-welded joints

  • 1.

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China

  • 2.

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;China Construction Steel Structure Co. Ltd., Shenzhen 518040, China

摘要

    摘要
  • 摘要: 以ABAQUS软件为平台,开发了用于模拟多层多道焊接头温度场、残余应力和焊接变形的热-弹-塑性有限元计算方法. 利用所开发的计算方法对板厚为16 mm的Q345钢平板对接接头的温度场、应力场和变形进行了数值模拟. 采用试验方法测量了对接接头的残余应力和角变形. 试验结果与数值结果比较吻合,验证了所开发方法的有效性. 结果表明,在板厚相同的条件下角变形和横向收缩随着焊接层数的增多有增大的趋势;焊缝附近的纵向拉伸应力区域分布范围随焊接层数的增加略有减小;焊接层数对纵向残余应力的峰值影响较小.
    Abstract: Based on ABAQUS software, a thermal-elastic-plastic finite element method (FEM) was developed to simulate welding temperature field, residual stresses and deformation for multi-pass joints. The residual stresses and deformation in Q345 butt-welded joint with 16 mm thickness were simulated through using the developed computational approach. Meanwhile, experiments were carried out to measure the welding residual stresses and angular distortion in the butt-welded joint. Through comparing the measured data and the simulated result, it is found that both the residual stress and deformation predicted by FEM are in good agreement with the experimental results. In addition, the results show that the angular distortion and transverse shrinkage increase with the number of weld pass. The numerical results also suggest that the region with high tensile longitudinal stress slightly decreases when the number of weld pass changes from three to five, while the peak value of longitudinal residual stress is not sensitive to the number of weld pass.
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    • 参考文献(8)
  • [1] Ueda Y. Welding deformation and residual stress prevention[M]. New York; Elsevier, 2012.
    [2] 周广涛, 刘雪松, 闫德俊, 等. 顶板焊接顺序优化减小焊接变形的预测[J]. 焊接学报, 2009, 30(9): 109-112. Zhou Guangtao, Liu Xuesong, Yan Dejum, et al. Prediction for welding deformation reducing by welding sequence optimization of upper plate[J]. Transactions of the China Welding Institution, 2009, 30(9): 109-112.
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    [7] Deng D, Wei Liang, Hidekazu Murakawa. Determination of welding deformation in fillet-welded joint by means of numerical simulation and comparison with experimental measurements[J]. Journal of Materials Processing Technology, 2007, 183: 219-225.
    [8] Deng D, Shoichi Kiyoshima. Numerical simulation of residual stress induced by laser beam welding in a SUS316 stainless steel pipe with considering initial residual stress influences[J]. Nuclear Engineering Design, 2010, 240: 688-696.
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出版历程
  • 收稿日期:  2014-03-05

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