Page 132 - 机械工程材料2024年第十一期
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吴叶军，等：考虑侧壁热源的摇动电弧窄间隙GMA焊接温度场有限元模拟
图 9 未考虑侧壁热源时模拟得到不同时刻焊接接头的横截面温度场
Fig. 9 Simulated temperature fields on cross-section of welded joint at different times without considering sidewall heat source: (a) 2.750 0 s
(arc located on left side of bead); (b) 2.812 5 s (arc located in middle of bead) and (c) 2.875 0 s (arc located on right side of bead)
图 10 考虑侧壁热源时模拟得到不同时刻焊接接头的横截面温度场
Fig. 10 Simulated temperature fields on cross-section of welded joint at different times with considering sidewall heat source: (a) 2.750 0 s
(arc located on left side of bead); (b) 2.812 5 s (arc located in middle of bead) and (c) 2.875 0 s (arc located on right side of bead)
图 11 未考虑侧壁热源时模拟得到温度场稳定前不同时刻下焊接接头的上表面温度场
Fig. 11 Temperature fields on top surface of welded joint at different times before reaching steady state without considering
sidewall heat source by simulation
热源2种条件下的稳定熔池形态基本一致，说明在温
4 结 论
度场稳定后是否考虑侧壁热源对焊接接头上表面的
熔池尺寸影响不大。 （1）有限元模拟得到考虑侧壁热源时焊缝截面
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