A Comparison of Different Finite Element Methods in the Thermal Analysis of Friction Stir Welding (FSW)

摘要: Friction Stir Welding (FSW) is a novel kind of welding for joining metals that are impossible or difficult to weld by conventional methods. Three-dimensional nature FSW makes the experimental investigation more complex. Moreover, observations often costly and time consuming, usually there an inaccuracy in measuring data during tests. Thus, Finite Element Methods (FEMs) has been employed overcome complexity, increase accuracy also reduce costs. It should be noted that, due presence large deformations material FSW, strong distortions mesh might happened numerical simulation. Therefore, one most significant considerations process simulation selection best approach. must mentioned that; approach determines relationship between finite grid (mesh) deforming continuum computing zones. Also, ability model provides accurate resolution boundaries interfaces. There different descriptions algorithms mechanics include Lagrangian Eulerian. combining above-mentioned methods, Arbitrary Lagrangian–Eulerian (ALE) proposed. In this paper, comparison approaches thermal analysis at both local global scales reviewed applications each method discussed detail. Observations showed used modelling behavior whole structure area, while Eulerian seldom behavior, it flow. Additionally, heat affected zone, ALE found as appropriate Finally, several challenges subjects remain addressed about opportunities future work