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Mathematical modeling of friction stir welding considering dry and viscous friction

机译：考虑干摩擦和粘滞摩擦的搅拌摩擦焊数学模型

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In this paper, the investigation of a pre-immersion period of Friction Stir Welding process (FSW) from the mechanical point of view using analytical considerations is presented. This initial period is a part of the real technological process, when a FSW instrument reaches the touchdown point with the workpiece, preheats the contact zone, but does not penetrate the material. This approach enables an insight into FSW process on a level, where the system parameters are known and an experimental evaluation of theoretical results is possible. Beside these considerations an analytical estimation of the power input of dry and viscous friction during instrument rotation and translation in parallel is shown. These phenomena are investigated including friction between a FSW instrument and a work piece. The influences of both dry and viscous friction are studied. Experiments have been done to validate the calculated results. (C) 2018 Elsevier Inc. All rights reserved.
机译：在本文中，从机械角度出发，使用分析方法对摩擦搅拌焊接工艺（FSW）的预浸时间进行了研究。初始阶段是实际工艺过程的一部分，当FSW仪器与工件到达触地点时，会预热接触区，但不会穿透材料。这种方法可以在一定程度上洞察FSW过程，在该级别上系统参数是已知的，并且可以对理论结果进行实验评估。除了这些考虑因素外，还显示了在仪器平行旋转和平移过程中干摩擦和粘性摩擦的功率输入的分析估计。研究了这些现象，包括FSW仪器与工件之间的摩擦。研究了干摩擦和粘摩擦的影响。已经进行实验以验证计算结果。 （C）2018 Elsevier Inc.保留所有权利。

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