AN ANALYSIS OF THERMAL-STRESS AND DISTORTION IN BEAD-ON-PLATE WELDINGUSING LAMINATED ISOTROPIC PLATE-THEORY

In this study, thin-plate bending theory using the assumption of small deflection has been adopted for a two-dimensional analysis of the the rmo-elasto-plastic behavior of plates in welding to overcome some diff iculties arising from a fully three-dimensional approach. For simulati ng the temperature gradient through the plate thickness, the concept o f a layered plate has been proposed, and the thermo-elasto-plastic beh avior of the plate during GMA bead-on-plate welding analyzed by using the finite-element method. It was revealed that the suggested method c an predict the trend of welding distortions quite satisfactorily.