Experimental and numerical study on shear-punch test of 6060 T6 extruded aluminum profile Academic Article uri icon

abstract

  • ¬© 2016 Elsevier Ltd In the present work a comprehensive experimental/numerical study on a 6060 T6 bumper profile subjected to combined shear-compression (shear-punch test) load is carried out. A set of key plasticity and fracture parameters to predict correctly the mechanical response of the structural component is required. Fracture¬†initiation tests on lab scale specimens provide the sufficient data needed to calibrate the newly extended non-quadratic yield function Yld2000-3d and the isotropic Modified Mohr-Coulomb (MMC) fracture model. The calibrated plasticity and fracture constitutive model is then validated upon disk-shaped specimen. Moreover, test results are reported on full-scale extruded aluminum bumper subjected to shear-punch load. A detailed FE model of the bumper and the supporting structure was built. The numerical simulation outcomes demonstrate that the calibrated material model predicts correctly not only the global force-displacement response but also the local fracture behavior at multiple¬†initiation points. It was shown that various part of the multi-cell cross-section of the extruded profile underwent different loading histories. Thus, in one single test a wide range of stress triaxialities develop which requires to introduce a very complete plasticity and fracture model.

author list (cited authors)

  • Qian, L., Paredes, M., Wierzbicki, T., Sparrer, Y., Feuerstein, M., Zeng, P., & Fang, G.

citation count

  • 20

publication date

  • November 2016