Explicit Finite Element Analysis of the Plunge Stage of Tool in Friction Stir Welding
Explicit Finite Element Analysis of the Plunge Stage of Tool in Friction Stir Welding
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DOI：
10.4028/www.scientific.net/msf.620-622.233
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发表时间：
2009-04
期刊：
影响因子：
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通讯作者：
W. Li;Min-Shen Yu;J. Li;D. Gao
中科院分区：
文献类型：
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作者：
W. Li;Min-Shen Yu;J. Li;D. Gao
研究搅拌摩擦焊过程中刀具的突降阶段是认识搅拌摩擦焊本质的基础，对搅拌摩擦点焊尤为重要。本文采用动态显式有限元方法，对摩擦搅拌刀具的突降阶段进行了数值模拟，更加关注温度的变化。结果表明，随着转速的增加，搅拌区周围的高温区域扩大。热影响区随着插入时间的增加而扩大，但搅拌区周围的最高温度变化不大。搅拌区范围随转速和插入时间的变化变化不大。温度场的模拟结果与实验结果基本吻合。
The investigation of the plunge stage of the tool during friction stir welding (FSW) is the basis of understanding the nature of FSW, which is especially important for friction stir spot welding. In this study, the plunge stage of FSW tool was numerically examined by dynamic explicit finite element method with more attention to the temperature evolution. It was found that the high temperature region around the stirred zone extended with increasing the rotation speed. The heat affected zone expanded with the increase of inserting time, but the highest temperature around the stirred zone changed little. The range of the stirred zone changed little with the variations of the rotation speed and inserting time. The simulation result on the temperature field was in comparable agreement with the experimental one.