沈阳航空航天大学学报2016，Vol.33Issue(6)：49-53,5.DOI:10.3969/j.issn.2095-1248.2016.06.008
基于计算流体力学的搅拌摩擦焊数值模拟
Numerical simulation of friction stir welding process based on computational fluid dynamics
摘要
Abstract
Friction Stir Welding( FSW)is a complex process influenced by many factors,such as tempera-ture,metal flow and microstructure transformation. Temperature and material flow are the main components of the FSW process,which are highly nonlinear and complex. In this study,a finite element model was estab-lished based on the computational fluid dynamics( CFD). The temperature distribution diagram,the velocity vector diagram and the materials streamline distribution diagram at different processing parameters were ob-tained in the FSW process. The results show that the material flow near the pin is more violent with the in-crease of the rotating speed of the pin and the effect of welding speed on material flow is not obvious. It is indicated from the simulation results that material separates in the front of the pin and welds behind the pin. Both the separating and welding occur on the advancing side. The difficulty of welding in FSW increases with the increase of distance from the welding surface,and the unlocked void is more likely to be formed.关键词
搅拌摩擦焊/计算流体力学/数值模拟/金属流动Key words
friction stir welding/computational fluid dynamics/numerical simulation/metal flow分类
矿业与冶金引用本文复制引用
高恩志,尹治利,刘冰洋..基于计算流体力学的搅拌摩擦焊数值模拟[J].沈阳航空航天大学学报,2016,33(6):49-53,5.基金项目
国家自然科学基金（项目编号51405310）；辽宁省教育厅科学研究一般项目 （）
