Numerical simulation of material flow behavior of friction stir welding influenced by rotational tool geometry

Numerical modeling for the effect of pin profiles on thermal and material flow characteristics in friction stir welding

“…The simulation results were found to be independent of the radius of the moving mesh zone. Besides, the material flow produced by a tool with threaded pin was studied by Colegrove and Shercliff [19] and Ji et al [20], and both models were 3D steadystate and a sticking boundary condition was imposed at the toolworkpiece interface. Hirasawa et al [21] investigated the plastic flow of various tool shapes during friction stir spot welding (FSSW) using a particle method.…”

Modern Manufacturing Engineering

“…Although the FEM method is the most common simulation method employed, several studies exist where alternative analysis methods, such as the method of cells, are extended to full simulation methods like the generalized method of cells (GMC) [119][120][121] and the high fidelity generalized methods of cells (HFGMC) [103,122]. The GMC is a full micromechanics model, adequate for multi-phased materials with arbitrary periodic microstructures.…”

“…This approach is widely used by researchers to simulate material flow in FSW [116][117][118][119][120][121]. As nodes are fixed in space, complexity related to mesh distortion is eliminated.…”

A Comprehensive Review of a Frictional Stir Welding

“…The effect of shoulder geometry and pin geometry on material plastic flow behavior is studied and reveals that the flow velocity of material inside weldment is increased by decreasing the cone angle of pine or decreasing the width of screw groove. [12] From the view of improvement of material flow, the concentric-circles-flute shoulder is superior than the inner-concave-flute shoulder or the plane shoulder. Therefore, choosing the reasonable shoulder geometry and the reasonable pin geometry can be good for improving the material flow during the friction stir welding process and avoiding the root defects .…”