Numerical simulation on temperature and stress fields of welding with weaving

Abstract

Although welding with weaving had been widely adopted to improve welding efficiency, the effects of weaving arc on temperature and stress fields were not clearly understood. In the present paper, a conversion of coordinates was implanted in a finite element model to improve the calculation precision and comprehend the characteristic of welding with weaving. Comparing with the results of the welding without weaving, a characteristic with lower peak temperature and wider weld bead was presented during the welding with weaving, and the temperature gradients near the weld pool was steeper. The results also indicated that the transverse residual stress of welding with weaving was greater than that of welding without weaving, while the longitudinal residual stress was similar. Both temperatures and residual stresses were compared with those of the experiments.

Keywords:

• FINITE ELEMENT MODEL
• WELDING WITH WEAVING
• TEMPERATURES
• STRESSES