A study on heat-flow analysis of friction stir welding on a rotation affected zone

In recent years, as interest in environmental protection and energy conservation rose, technological development for lightweight efficiency of transport equipment, such as aircrafts, railcars, automobiles and vessels, have been briskly proceeding. This has led to an expansion of the application of lightweight alloys such as aluminum and magnesium. For the welding of these lightweight alloys, friction stir welding has been in development by many researchers. Heat-flow analysis of friction stir welding is one such research. The flow and energy equation is solved using the computational fluid dynamic commercial program ‘Fluent’. In this study, a rotation affected zone concept is imposed. The rotation affected zone is a constant volume. In this volume, flow is rotated the same as the tool rotation speed and so plastic dissipation occurs. Through this simulation, the temperature distribution results are calculated and the simulation results are compared with the experimental results.

[1]  Paul A. Colegrove,et al.  3-Dimensional CFD modelling of flow round a threaded friction stir welding tool profile , 2005 .

[2]  Kwansoo Chung,et al.  Numerical simulation of friction stir butt welding process for AA5083-H18 sheets , 2010 .

[3]  Aníbal N. Cassanelli,et al.  Numerical modeling of welded joints by the "Friction Stir Welding" process , 2004 .

[4]  W. Woo,et al.  Influence of the Tool Pin and Shoulder on Microstructure and Natural Aging Kinetics in a Friction-Stir-Processed 6061–T6 Aluminum Alloy , 2007 .

[5]  Xinhai Qi,et al.  Thermal and Thermo-Mechanical Modeling of Friction Stir Welding of Aluminum Alloy 6061-T6 , 1998 .

[6]  J. H. Hollomon,et al.  Effect of Strain Rate Upon Plastic Flow of Steel , 1944 .

[7]  Bang Hee Seon,et al.  Transient Thermal Analysis of Friction Stir Welding using 3D-Analytical Model of Stir Zone , 2008 .

[8]  Yuh J. Chao,et al.  Heat Transfer in Friction Stir Welding—Experimental and Numerical Studies , 2003 .

[9]  Patrick Ulysse,et al.  Three-dimensional modeling of the friction stir-welding process , 2002 .

[10]  R. Nandan,et al.  Numerical simulation of three-dimensional heat transfer and plastic flow during friction stir welding , 2006 .

[11]  Radovan Kovacevic,et al.  Finite element modeling of friction stir welding—thermal and thermomechanical analysis , 2003 .

[12]  A. Jackson,et al.  Constitutive equations for use in prediction of flow stress during extrusion of aluminium alloys , 1997 .

[13]  Beom-Seon Jang,et al.  Comparison of friction stir welding heat transfer analysis methods and parametric study on unspecified input variables , 2014 .

[14]  W. M. Thomas,et al.  Friction Stir Butt Welding , 1991 .