Abstract
The present work focuses upon the use of tube hydroforming into square cross sectional-die as validation test for new constitutive parameter identification strategy. It presents how a developed identification startegy using a reduced set of experimental data in conjuction with some generated artificiel input data are proficient to identifiy the anisotropy parameters of an advanced Cazacu & Barlat yield criterion CB2001, which requires a large number of experimental data for its calibration. Two tubular materials are investigated, namely: mild steel S235 and AA6063 aluminum alloy, which manifest miscellaneous plastic behaviors. The concordance between numerical and experimental thickness distribution along a profile of the hydroformed part into cross sectional-die are the main facing challenges for the validation of the proposed calibration strategy. The analysis of the present findings reveals good agreement between numerical simulation and experimental results. Eventually, the proposed approach is a user friendly-identification strategy and effective method, which can be applied for the calibration of recent developed yield functions for better modeling anisotropic plastic behavior of sheet and tube metals and then could likely widespreadly used in research laboratories as well as in automative industry.
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