A Study on the Buckling in Fillet Welds of Sheets

Chu, Hwan-Su; Cho, Sang-Myung

Journal of KWJS 2009;27(3):60-66.
Published online July 6, 2009.

박판 필릿용접구조물의 좌굴변형에 관한 연구

A Study on the Buckling in Fillet Welds of Sheets

Abstract

The structures distorted by welding have to be corrected. Since the correcting work needs a lot of costs and time, it is very important to minimize the buckling distortion due to welding of thin plate structure. Therefore the aim of this study is to investigate the effect of single bead on plate welding and fillet welding on the buckling distortion. In the single bead on plate welding, it was found that the welding speed and welding sequence were the most dominant factors on distortion. In the fillet welding, there were four typical buckling modes observed, and the welding sequence was the most influential factor on the buckling distortion. However typical distortion measuring method is not considered for the distortion correcting process costs of each buckling modes, therefore, in this study, the measuring method is developed to classify the buckling modes for torsion of specimen and buckling distortion depend on nodal point for the bead on plate welding specimen and fillet welds.

Key Words: Thin plate, Distortion correcting process cost, Buckling distortion, Single bead on plate welding, Fillet welding, Buckling mode, Welding speed, Symmetric welding sequence