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Publications
Hashemzadeh, M., Chen, B.Q. and Guedes Soares, C. (2018), “Evaluation of multi-pass welding induced residual stress using numerical and experimental approaches”, Ships & Offshore Structures, Vol. 13(8), pp. 847-856
In the present work the welding induced residual stress is investigated numerically and experimentally in steel plates due to multi-pass welding. The transient finite element model is developed to estimate the axial residual stresses induced by butt welding. Element Birth and death technique in ANSYS is used to simulate the welding process. Plates with six millimetre thicknesses are modelled by one and three passes of welding to investigate the impacts of multi-pass welding on the induced residual stress. The experimental study is performed to calibrate the numerical results for both thermal and mechanical analyses. The X-ray diffraction method is used for measuring the residual stress. A good agreement is achieved between numerical and experimental results. It is concluded that, multi-pass welding has significant effects on the residual stress distribution.
Keywords: numerical analysis; experiment; residual stress measurement; butt welding; multi-pass welding; birth and death technique
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