TY - JOUR
TI - A coupled thermo-mechanical model of friction stir welding
AU - Veljić Darko M
AU - Perović Milenko M
AU - Sedmak Aleksandar S
AU - Rakin Marko P
AU - Trifunović Miroslav V
AU - Bajić Nikola S
AU - Bajić Darko R
JN - Thermal Science
PY - 2012
VL - 16
IS - 2
SP - 527
EP - 534
PT - Article
AB - A coupled thermo-mechanical model was developed to study the temperature  fields, the plunge force and the plastic deformations of Al alloy 2024-T351  under different rotating speed: 350, 400 and 450 rpm, during the friction  stir welding (FSW) process. Three-dimensional FE model has been developed in  ABAQUS/Explicit using the arbitrary Lagrangian-Eulerian formulation, the  Johnson-Cook material law and the Coulomb’s Law of friction. Numerical  results indicate that the maximum temperature in the FSW process is lower  than the melting point of the welding material. The temperature filed is  approximately symmetrical along the welding line. A lower plastic strain  region can be found near the welding tool in the trailing side on the bottom  surface. With increasing rotation speed, the low plastic strain region is  reduced. When the rotational speed is increased, the plunge force can be  reduced. Regions with high equivalent plastic strains are observed which  correspond to the nugget and the flow arm.