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RESEARCH PAPERS

Deformations and Stresses in Butt-Welding of Large Plates With Special Reference to the Mechanical Material Properties

[+] Author and Article Information
Mikael Jonsson, Lennart Karlsson, Lars-Erik Lindgren

Department of Mechanical Engineering, Luleå University of Technology, S-951 87 LULEÅ, Sweden

J. Eng. Mater. Technol 107(4), 265-270 (Oct 01, 1985) (6 pages) doi:10.1115/1.3225817 History: Received February 12, 1985; Online September 15, 2009

Abstract

Simulation of automatic butt-welding of large plates was investigated. Two different steels were considered. The plates were tack-welded before the butt-welding. The simulation includes the tack-welding, the butt-welding and the cooling to room temperature. The simulations should lead to an understanding of the mechanics behind the change in gap width in front of the moving arc, which is of importance in automatic welding production. The residual stresses due to the butt-welding were also studied. The magnitude and the distribution of the residual stresses are important in design of welded structures. The change in gap width in front of the moving arc and the residual stresses depend on the material in the plates, the restraints of the plates, the size of the plates and the welding parameters. The most important welding parameters are the arc energy per unit length of the weld and the welding speed. The change in gap width depends also on the tack-welding procedure.

Copyright © 1985 by ASME
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