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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >The 3D Simulation of Friction Stir Welding Process
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The 3D Simulation of Friction Stir Welding Process

机译：搅拌摩擦焊接过程的3D模拟

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摘要

This paper presents a 3D numerical model based on arbitrary Lagrangian-Eulerian(ALE) and adaptive remeshing techniques to study the mechanism of friction stir welding. Results indicate that the material flow on the advancing side and the flow on the retreating side are different. The material on the retreating side never rotates around the pin. But the material on the advancing font side of the weld forms the fluidized bed around the pin and then sloughs off in the wake. The material in front of the pin moves upwards, then is forced to rotate around the pin. Behind the pin, the material moves downwards. It is the true reason to make the FSW process continue successfully. It seems that there exists a swirl of material flow on the advancing side. The residual stress distribution is a double-feature curve. It is also shown that there exists a good correlation between the equivalent plastic strain distribution and the distribution of the microstructure zones in the weld.
机译：本文提出了一种基于任意拉格朗日-欧拉（ALE）和自适应重塑技术的3D数值模型，以研究搅拌摩擦焊的机理。结果表明，前进侧的物料流与后退侧的物料流不同。后退侧的物料永远不会绕销旋转。但是，前进的焊缝侧面的材料在销钉周围形成流化床，然后在尾流中脱落。销钉前面的物料向上移动，然后被迫绕销钉旋转。在销钉后面，物料向下移动。这是使FSW过程成功继续的真正原因。似乎在前进侧存在物料流动的漩涡。残余应力分布是双特征曲线。还表明，当量塑性应变分布与焊缝中微观结构区域的分布之间存在良好的相关性。

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