Changes of Root Gap during Welding in Case of Butt Weld Joints (3rd Report) : In Case of Butt Weld Joints with Tack Welds

Abstract

The present paper deals with the effect of welding conditions, plate length and tack weld pitch on changes of root gap during welding in butt weld joints. The calculations of changes of root gap during welding are carried out under various conditions of heat input, plate length and tack weld pitch, using the finite element method explained in the previous report. In this case it is assumed that the rigidity of tack weld is infinite. The main conclusions obtained in this report are summarized as follows: