A new approach to modelling friction stir welding using the CEL method

Although friction stir welding (FSW) has made its way to industrial application particularly in the last years, the FSW process, its influences and their strong interactions among themselves are still not thoroughly understood. This lack of understanding mainly arises from the adverse observability of the actual process with phenomena like material flow and deposition, large material deformations and thermomechanical interactions determining the mechanical properties of the weld. To close this gap an appropriate numerical model validated by experiments may be helpful. But because of the issues mentioned above most numerical techniques are not capable of modelling the FSW process. Therefore in this study a Coupled Eulerian-Lagrangian (CEL) approach is used for modelling the whole FSW process. A coupled thermomechanical 3D FE model is developed with the CEL formulation given in the FE code ABAQUS® V6.12. Results for temperature fields, weld formation and the possibility of void formation are shown and validated.

[1]  Characterization of Friction Stir Welding on Aluminum , 2009 .

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

[3]  Hugh Shercliff,et al.  Heat flow into friction stir welding tools , 2003 .

[4]  Icíar Alfaro,et al.  Numerical simulation of friction stir welding by natural element methods , 2008 .

[5]  Joseph R. Davis.  Properties and selection : nonferrous alloys and special-purpose materials , 1990 .

[6]  Mica Grujicic,et al.  Fully coupled thermomechanical finite element analysis of material evolution during friction-stir welding of AA5083 , 2010 .

[7]  V. Balasubramanian,et al.  Influences of tool pin profile and tool shoulder diameter on the formation of friction stir processing zone in AA6061 aluminium alloy , 2008 .

[8]  R. Nobile,et al.  Mechanical analysis of ultra-thin friction stir welding joined sheets with dissimilar and similar materials , 2008 .

[9]  Amitava De,et al.  Toward optimum friction stir welding tool shoulder diameter , 2011 .

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

[11]  Rajiv S. Mishra,et al.  Friction Stir Welding and Processing , 2007 .

[12]  D. Agard,et al.  Microtubule nucleation by γ-tubulin complexes , 2011, Nature Reviews Molecular Cell Biology.

[13]  R. Mishraa,et al.  Friction Stir Welding And Processing , 2005 .

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

[15]  E. Hall,et al.  The Deformation and Ageing of Mild Steel: III Discussion of Results , 1951 .

[16]  M. N. James,et al.  Weld tool travel speed effects on fatigue life of friction stir welds in 5083 aluminium , 2003 .

[17]  A H. Adibi-Sedeh,et al.  Extension of Oxley’s Analysis of Machining to Use Different Material Models , 2003 .

[18]  Lionel Fourment,et al.  Friction model for friction stir welding process simulation: Calibrations from welding experiments , 2010 .

[19]  Peter Blau,et al.  Friction Science and Technology: From Concepts to Applications, Second Edition , 2008 .

[20]  N. Petch,et al.  The Cleavage Strength of Polycrystals , 1953 .

[21]  W. F. Noh,et al.  CEL: A TIME-DEPENDENT, TWO-SPACE-DIMENSIONAL, COUPLED EULERIAN-LAGRANGE CODE , 1963 .

[22]  K. Dang Van,et al.  Modelling of the residual state of friction stir welded plates , 2008 .

[23]  E. Orowan,et al.  The Calculation of Roll Pressure in Hot and Cold Flat Rolling , 1943 .

[24]  Andreas Archenti,et al.  Proceedings of the International Conference on Advanced Manufacturing Engineering and Technologies , 2013 .

[25]  S. Guerdoux,et al.  A 3D numerical simulation of different phases of friction stir welding , 2009 .

[26]  Kenji Suzuki,et al.  Fatigue crack propagation behavior in friction stir welding of AA6063-T5: Roles of residual stress and microstructure , 2012 .

[27]  B. W. Webb,et al.  Modeling the frictional boundary condition in friction stir welding , 2008 .

[28]  Mokhtar Awang,et al.  Simulation of friction stir spot welding (FSSW) process: Study of friction phenomena , 2007 .

[29]  H. Schmidt,et al.  A local model for the thermomechanical conditions in friction stir welding , 2004 .

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