Prediction of Deformation for Large Welded Structures Based on Inherent Strain(Mechanics, Strength & Structural Design)

概要

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Welding is one of the main joining techniques used in industry. Assembly in ships, cars, trains or civil engineering structures use this process more and more intensively. In this paper, the characteristics of the welding inherent deformation, namely longitudinal shrinkage, transverse shrinkage and angular distortion, of the Aluminum Alloy butt weld were investigated using the thermal elastic plastic finite element method. Through a series of FEM analyses, a database of inherent deformation was established. Based on the inherent deformation database, an elastic FEM was developed to predict the welding deformation for larger welded structures. The usefulness of the proposed method was demonstrated by the prediction of welding deformation for a large aluminum alloy coping.
大阪大学の論文