Pham Son Minh^1,, Tran Viet Phu²

This paper investigates the welding deformation via simulation and experiments. The structure of a combined joint geometry was modeled and simulated using Simufact welding software based on the thermo elastic–plastic approach. To verify the simulation results, a series of experiments was conducted with three different welding sequences using automated welding process, low carbon steel AISI 1005 as the parent metal, and digital gas metal arc welding (GMAW) power source with premixed shielding gas and the one-sided clamping technique. Based on the results, it was established that the thermo elastic–plastic 3D FEM analysis shows good agreement with experimental results, and the welding sequence “from inside to outside” induced less distortion compared with “from outside to inside”. By claiming one plate, the deformation almost locates at the free plate.

welding simulation, structure deformation, heat transfer, plate connection, plate distortion