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基于弹性反变形法的连接杆焊接变形控制

刘雨生, 李萍, 田健, 薛克敏, 宋健

刘雨生, 李萍, 田健, 薛克敏, 宋健. 基于弹性反变形法的连接杆焊接变形控制[J]. 焊接学报, 2015, 36(12): 17-21.
引用本文: 刘雨生, 李萍, 田健, 薛克敏, 宋健. 基于弹性反变形法的连接杆焊接变形控制[J]. 焊接学报, 2015, 36(12): 17-21.
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LIU Yusheng, LI Ping, TIAN Jian, XUE Kemin, SONG Jian. Controlling welding distortion of joint lever based on elasticity anti-distortion method[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(12): 17-21.
Citation: LIU Yusheng, LI Ping, TIAN Jian, XUE Kemin, SONG Jian. Controlling welding distortion of joint lever based on elasticity anti-distortion method[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(12): 17-21.
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基于弹性反变形法的连接杆焊接变形控制

  • 1.

    合肥工业大学 材料科学与工程学院, 合肥 230009

  • 2.

    中电科技集团第38研究所, 合肥 230009

基金项目: 安徽省自然科学基金资助项目(1308085JGD02);中电科技集团产学研合作资助项目(12-271)

Controlling welding distortion of joint lever based on elasticity anti-distortion method

  • 1.

    School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China

  • 2.

    CETC No.38 Research Institute, Hefei 230009, China

摘要

    摘要
  • 摘要: 基于热-机耦合热弹塑性有限元理论,利用MARC有限元分析软件对连接杆的焊接变形进行数值模拟,并进行焊接试验. 将数值模拟结果与试验结果进行比较,两者基本吻合,误差仅为4.8%,验证了有限元模型建立的准确性. 在此基础上,自行设计了弹性反变形工装. 对有反变形工装的连接杆进行数值模拟,并将最佳工艺参数应用于试验中,得到了理想的焊接样件. 结果表明,当未采用反变形工装时,连接杆的最大焊接变形量为9.85 mm;当采用反变形工装且中间和两侧弯环的下压量分别为7,4 mm时,最大的焊接变形量减小至1.73 mm,降低了82.4%,有效的控制了焊接变形.
    Abstract: Based on the thermo-mechanical coupling FEM theory, the welding distortion of joint lever was simulated by software MARC and the welding test was carried out. It shows better fitness between the numerical simulation result and experiment result. The error is only 4.8% which verifies the accuracy of the FE model. The elasticity anti-distortion facility was designed on the basis of the simulation data. The optimal parameters were obtained by numerical simulation of the joint lever with the facility and were applied to the test in which the ideal sample was acquired. The result shows that the maximum welding distortion of the joint lever is 9.85 mm when the facility is not applied. However, when the facility is used, the reduction of the middle rings and the side rings is 7 mm and 4 mm respectively, the maximum welding distortion is reduced by 82.4% to 1.73 mm. Thus, the welding distortion has been well controlled.
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    • 参考文献(10)
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  • 收稿日期:  2014-03-05

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