Abstract
ABSTRACTFirst of all, the elastic modulus variation of 6016-T4 aluminum alloy has been investigated by uniaxial tensile experiments. Secondly, a new model to describe the change of elastic modulus has been proposed based on our experimental data. Then Finite Element (FE) simulations with various elastic moduli have been conducted to predict the springback of V bending. The results are shown as follows: the elastic modulus decreases, obviously, with increase of equivalent plastic strain; the proposed model is more suitable to explain our experimental data than the other models considered; and the springback prediction of V bending with various elastic moduli is more precise than with constant modulus.
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