An apropos kinematic framework for the numerical modeling of friction stir welding

This paper describes features of a fully coupled thermo-mechanical model for Friction Stir Welding (FSW) simulation. An apropos kinematic setting for different zones of the computational domain is introduced and an efficient coupling strategy is proposed. Heat generation via viscous dissipation as well as frictional heating is considered.The results of the simulation using the proposed model are compared with the experimental evidence. The effect of slip and stick condition on non-circular pin shapes is analyzed. Simulation of material stirring is also carried out via particle tracing, providing insight of the material flow pattern in the vicinity of the pin.

► Approach permitting to avoid remeshing and variables remapping. ► Apropos combination of three kinematic frameworks for different domain parts. ► The stabilized approach allows use of elements that do not satisfy LBB condition. ► Temperature-dependent thermo-physical properties can be used. ► Numerical particle tracing for visualization of trajectories due to stirring.