Numerical simulation of the laser welding process for the prediction of temperature distribution on welded aluminium aircraft components

摘要

Highlights?Prediction of the temperature distribution in T-joint laser welded plates.?Use of “Birth and death” technique for the simulation of the weld fillet.?Non-linear analysis with temperature dependent material properties.?Agreement between predicted and experimental results.AbstractThe present investigation is focused to the modelling of the temperature field in aluminium aircraft components welded by a CO2laser. A three-dimensional finite element model has been developed to simulate the laser welding process and predict the temperature distribution in T-joint laser welded plates with fillet material. The simulation of the laser beam welding process was performed using a nonlinear heat transfer analysis, based on a keyhole formation model analysis. The model employs the technique of element “birth and death” in order to simulate the weld fillet. Various phenomena associated wi