Study on the structure deformation in process of gas metal arc welding – GMAW
Corressponding author's email:
minhps@hcmute.edu.vnKeywords:
Welding simulation, deformation, heat transfer, plate connectionAbstract
This paper presents an investigation of the welding deformation using simulation andexperiments. The structure of a combined joint geometry was modeled and simulated inSimufact welding software based on the thermal-elastic-plastic approach. To verify thesimulation results, a series of experiments was conducted with three different weldingsequences using automated welding process, low carbon steel AISI 1005 as parent metal,digital GMAW power source with premixed shielding gas and one-sided clamping technique.Based on the results, it was established that the thermo-elastic-plastic 3D FEM analysisshows a good agreement with experimental results and the welding sequence “from insideto outside” induced less distortion compared to “from outside to inside”. Also, by claimingone plate, the deformation almost locates at the free plate.
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