Abstract
Systematic numerical investigation is performed to study the effects of different case studies on butt welding of dissimilar thicknesses plates which is a normal type of welding geometry in shipyards. To start with, the numerical study of thermo-mechanical analysis is verified by experimental test results reported in this paper. In the experiment, two stainless steel plates with 2.5 and 4 mm thicknesses are welded with single-pass butt welding with GMAW. The numerical investigation is conducted with eight different case studies, belonging to three different groups to evaluate the effects of each case on the structural response. These eight cases are grouped according to the heat input position, welding parameters, and different ratios between thicknesses. It is concluded from the results that the changing ratio between thicknesses has a significant effect on the structural response.
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