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Publications
Hashemzadeh, M., Garbatov, Y., Guedes Soares, C. and O'Connor, A. (2022), “Friction stir welding induced residual stresses in thick steel plates from experimental and numerical analysis”, Ships & Offshore Structures, Vol. 17(5), pp. 1053-1061.
Friction steel welding (FSW) induces a relatively low level of deflection, and residual stresses and recent advances in the welding technology has shown that FSW may now be broadly used in steel welding leading to significant improvement of the welding quality for new constructions and repairs. The present study performs experimental and numerical analyses of friction stir welding in thick steel plates. A finite element model is developed, based on a new heat input source mathematical formulation, accounting for the welding transient thermo-mechanical process of the friction stir welding-induced residual stresses. The welding-induced residual stresses, estimated by the new developed finite element model, are compared with the experiment. The present study shows that the newly developed heat source finite element model demonstrates an acceptable agreement between the numerical and experimental results. A sensitivity analysis concerning the essential governing parameters in predicting the friction stir welding induced residual stresses is also addressed.
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