In this study, welding distortion in a large thin plate panel structure
was predicted by means of elastic finite element method based on inherent
strain theory and interface element formulation. The welding distortions in
the thin plate model computed by large deformation theory and small deformation
theory were compared. The comparison suggests that the geometrical non-linearity
should be carefully considered when welding distortion in a thin plate structure
is predicted. In addition, the influences of welding procedure and assembly
sequence on the final distortion were examined numerically. Simulation results
indicate that both welding procedure and assembly sequence significantly affect
the final deformation.
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