Numerical and experimental study of Bauschinger effect on AA5182 sheets
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For stamping process, most of the sheet metal elements undergo a complicated deformation process that may comprise a sequence of stretching, bending, unbending and reverse bending processes. For this kind of deformation, the Bauschinger effect must be considered in order to calculate the internal stress within the parts before springback. To understand the Bauschinger effect phenomenon on AA5182-O temper, a fixture for cyclic double-shear test has been designed and manufactured. This test can induce cyclic shear loading on the specimen during experiment. LS-Dyna has also been used to simulate this experiment.