Evaluation of multi-pass welding-induced residual stress using numerical and experimental approaches

ABSTRACT

In the present work the welding-induced residual stresses in steel plates, due to multi-pass welding are investigated numerically and experimentally. The transient finite element model is developed to estimate the axial residual stresses induced by butt welding. Element birth and death technique is used to simulate the welding process in ANSYS. Plates with 6 mm thicknesses are modelled by one and three passes of welding to investigate the effect of multi-pass welding on the induced residual stress. An 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

Acknowledgements

This study was performed within the Strategic Research Plan of the Centre for Marine Technology and Ocean Engineering, which is financed by Portuguese Foundation for Science and Technology (Fundação para a Ciência e Tecnologia-FCT), under contract UID/Multi/00134/2013 – LISBOA-01-0145-FEDER-007629.

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Marzieh Hashemzadeh http://orcid.org/0000-0002-2207-1104

Bai-Qiao Chen http://orcid.org/0000-0001-8847-1648

C. Guedes Soares http://orcid.org/0000-0002-8570-4263

Additional information

Funding

The first author has been supported by the FCT – Fundação para a Ciência e Tecnologia, Portugal [SFRH/BD/97682/2013]; American Bureau of Shipping [no number].