Finite Element Modelling of Residual Stresses in Welded Pipe Welds with Dissimilar Materials

Alhafadhi, Mahmood and Krállics, György (2020) Finite Element Modelling of Residual Stresses in Welded Pipe Welds with Dissimilar Materials. Materials Science and Engineering, 45 (1). pp. 7-19. ISSN 2063-6792

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Abstract

Many methods might be used for investigation of the pipe weld failures. Residual stresses play a very prominent role in the growth of crack after the welding. In this study pre-sented the finite element method simulation of residual stresses in case of pipe welding. A two-dimensional axisymmetric (2-D) finite element model is employed to calculate the residual stress. The model was validated using hardness measurement. The results were compared with experimentally measured data to evaluate the accuracy of the finite element modelling. Good agreement was found between the measurements and simulations results. The developed FE model was used to study the effects of welding heat input on welding residual stresses. It is shown that the welding heat input has a significant effect on the magnitude and distribution of residual stresses of the studied joints.

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