A STUDY ON THE PREDICTION OF WELDING DISTORTIONS OF HULL IN SHIPBUILDING (I)

摘要

In order to evaluate principal factors controlling welding distortions in particular angular distortion, both dimensional analysis and Finite Element Analysis (FEA) have been performed. The principal factors were found to be the heat intensity, rigidity and restraint, which were verified by experimental results. Angular distortion both at the fillet and at the butt weldment of hull structure can be predicted by an equation expressed with function of heat intensity, bending rigidity and internal restraint.