Study on Influence of Gas Cutting When Removing Constraint Jig Plates on Welding Deformation After Submerged Arc Welding

In order to investigate the effect of gas cutting during removal restraining jig on deformation after submerged arc welding, authors have conducted experiments a series processes using constraint plates in test specimen modeling deck steel bridge. this paper, an Idealized explicit FEM developed by is applied detail factors that cause springback plates. A welding and were modeled, then three-dimensional thermo-elastic-plastic analysis was performed FEM. As result, it confirmed experimental analytical results good agreement, validity method demonstrated. addition, found inherent had significant influence numerical analysis. Then, we proposed simplified mechanical model estimate cutting. showed quantitatively agreement with deformation.