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焊接顺序对大型薄板装甲钢结构焊接变形的影响

董文超 陆善平 李殿中

董文超, 陆善平, 李殿中. 焊接顺序对大型薄板装甲钢结构焊接变形的影响[J]. 焊接学报, 2015, 36(7): 43-46,50.
引用本文: 董文超, 陆善平, 李殿中. 焊接顺序对大型薄板装甲钢结构焊接变形的影响[J]. 焊接学报, 2015, 36(7): 43-46,50.
DONG Wenchao, LU Shanping, LI Dianzhong. Effect of welding sequence on welding distortion of large-sized thin armor steel structure[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(7): 43-46,50.
Citation: DONG Wenchao, LU Shanping, LI Dianzhong. Effect of welding sequence on welding distortion of large-sized thin armor steel structure[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(7): 43-46,50.

焊接顺序对大型薄板装甲钢结构焊接变形的影响

Effect of welding sequence on welding distortion of large-sized thin armor steel structure

  • 摘要: 基于有限元软件SYSWELD建立了大型薄板装甲钢结构的焊接有限元模型,采用Local-Global方法研究了焊接顺序对薄板结构焊接变形的影响. 通过对比焊缝截面宏观形貌,利用SYSWELD热源拟合工具,建立了适合现场焊接工艺的双椭球热源模型. 采用热弹塑性有限元法分析了T形和对接接头的焊接过程,获得了局部塑性应变和焊缝刚度,进而模拟了不同焊接顺序下薄板结构变形情况. 结果表明,现场焊接顺序下结构中部薄板焊接变形严重,最大变形量为9.6 mm,模拟结果与试验结果吻合较好;采用优化的焊接顺序,可有效控制薄板焊接变形,最大变形量可减小75%.
  • [1] 闫德俊, 刘雪松, 周广涛, 等. 大型底板结构焊接顺序控制变形数值分析[J]. 焊接学报, 2009, 30(6): 55-58. Yan Dejun, Liu Xuesong, Zhou Gugangtao, et al. Numerical analysis on optimizing welding sequence of large-sized bottom structure for controlling welding distortion[J]. Transactions of the China Welding Institution, 2009, 30(6): 55-58.
    [2] Dong P. Residual stresses and distortions in welded structures: a perspective for engineering applications[J]. Science and Technology of Welding and Joining, 2005, 10(4): 389-398.
    [3] Yi H J, Kim J Y, Yoon J H, et al. Investigations on welding residual stress and distortion in a cylinder assembly by means of a 3D finite element method and experiments[J]. Journal of Mechanical Science and Technology, 2011, 25(12): 3185-3193.
    [4] 汪建华, 陆 皓, 魏良武. 固有应变有限元法预测焊接变形理论及其应用[J]. 焊接学报, 2002, 23(6): 36-40.Wang Jianhua, Lu Hao, Wei Liangwu. Prediction of welding distortions based on theory of inherent strain by FEM and its application[J]. Transactions of the China Welding Institution, 2002, 23(6): 36-40.
    [5] 方臣富, 吴文烈, 刘 川, 等. 基于固有应变法预测双丝CO2气体保护焊液压支架顶梁变形[J]. 焊接学报, 2013, 34(11): 1-4.Fang Chenfu, Wu Wenlie, Liu Chuan, et al. Welding deformation of top beam structure in hydraulic support by CO2 double-wire gas shield welding based on inherent strain method[J]. Transactions of the China Welding Institution, 2013, 34(11): 1-4.
    [6] Tsirkas S A, Papanikos P, Pericleous K, et al. Evaluation of distortions in laser welded shipbuilding parts using local-global finite element approach[J]. Science and Technology of Welding and Joining, 2003, 8(2): 79-88.
    [7] Bachorski A, Painter M J, Smailes A J, et al. Finite-element prediction of distortion during gas metal arc welding using the shrinkage volume approach[J]. Journal of Materials Processing Technology, 1999, 93(8): 405-409.
    [8] 田锡唐. 焊接结构[M]. 北京:机械工业出版社, 1982.
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  • 收稿日期:  2013-12-19

焊接顺序对大型薄板装甲钢结构焊接变形的影响

摘要: 基于有限元软件SYSWELD建立了大型薄板装甲钢结构的焊接有限元模型,采用Local-Global方法研究了焊接顺序对薄板结构焊接变形的影响. 通过对比焊缝截面宏观形貌,利用SYSWELD热源拟合工具,建立了适合现场焊接工艺的双椭球热源模型. 采用热弹塑性有限元法分析了T形和对接接头的焊接过程,获得了局部塑性应变和焊缝刚度,进而模拟了不同焊接顺序下薄板结构变形情况. 结果表明,现场焊接顺序下结构中部薄板焊接变形严重,最大变形量为9.6 mm,模拟结果与试验结果吻合较好;采用优化的焊接顺序,可有效控制薄板焊接变形,最大变形量可减小75%.

English Abstract

董文超, 陆善平, 李殿中. 焊接顺序对大型薄板装甲钢结构焊接变形的影响[J]. 焊接学报, 2015, 36(7): 43-46,50.
引用本文: 董文超, 陆善平, 李殿中. 焊接顺序对大型薄板装甲钢结构焊接变形的影响[J]. 焊接学报, 2015, 36(7): 43-46,50.
DONG Wenchao, LU Shanping, LI Dianzhong. Effect of welding sequence on welding distortion of large-sized thin armor steel structure[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(7): 43-46,50.
Citation: DONG Wenchao, LU Shanping, LI Dianzhong. Effect of welding sequence on welding distortion of large-sized thin armor steel structure[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(7): 43-46,50.
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