Modelling and simulation on deformation behaviour of Al2014-T6 alloy beyond necking

Abstract In the present work, numerical simulation for aluminium alloy Al2014-T6 is carried out to understand the stress–strain behaviour beyond necking under quasi-static loading (0.4 mm/s). Six material models (Hollomon, Swift, Ludwik, Ghosh, Voce and Hockett-Sherby) are studied to predict the hardening characterization of the alloy. Least square method is used to find the material parameters of these models based on the experimental results. It is observed that the predicted results of the models in the pre-necking regime fitted well the experimental results whereas in the post-necking regime, their predictions are different. Hollomon and Ludwik predicted the stress–strain curve well beyond necking whereas, the Voce and Hockett-Sherby predictions are more accurate in pre-necking zone.