Numerical simulation of temperature field of flux bands constrained arc welding T-joint

Abstract

Abstract: In order to investigate the distribution law of temperature field of flux bands constrained arc (FBCA) welding in T-joint which is the basic welding unit of I-core sandwich panel, a computational approach was developed to predict the temperature field of T-joint by FBCA welding based on ABAQUS nonlinear finite element software. The calculated results were compared with the actual measurement results, and the heat distribution on the respective paths of the face and the core plate were studied. The result showed that the temperature field of T-joint in FBCA welding is symmetrically distributed along the weld center, and the heat distribution is mainly concentrated on the face plate. The combined heat source model can not only precisely simulate the temperature distribution morphology of weld section and the width of heat affected zone compared with the experiment, but also have a good agreement about the thermal cycle of typical points measured by the IR camera, which verifies the rightness of the combined heat source model in calculating the temperature field of T-joint in FBCA welding.

Key words: flux bands constrained arc welding, combined heat source model, welding temperature field, numerical simulation

CLC Number:

TG402

FENG Rui, WANG Lei, LU Wan-quan, WANG Guang-yu, QIAO Ji-sen. Numerical simulation of temperature field of flux bands constrained arc welding T-joint[J]. Journal of Lanzhou University of Technology, 2022, 48(5): 1-7.

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