Formability

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(Predict forming limit of formed part under warm/hot stamping conditions)

An intrinsic feature of the hot stamping process, in which a hot blank is quenched and formed between water cooled dies, is the severe thermo-mechanical deformation that the blank experiences under the combined influences of non-isothermal and non-proportional loadings. This results in challenges for conventional forming limit prediction models to accurately predict material behaviour. Formability module offers a novel viscoplastic-Hosford-MK model to predict the forming limits of material under warm/hot stamping conditions and finally optimise the forming parameters.

The functional module ‘Formability’ is developed using a unique Viscoplastic-Horsford-MK model to predict failure of warm/hot-stamped part.

Formability
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El Fakir, O., Wang, L., et al. (2014) ‘Predicting Effect of Temperature, Strain Rate and Strain Path Changes on Forming Limit of Lightweight Sheet Metal Alloys’, Procedia Engineering. Elsevier B.V., 81(October), pp. 736–741. https://dx.doi: 10.1016/j.proeng.2014.10.069.

Liu J, Gao H, El Fakir O, Lin J, 2016. Hot stamping of AA6082 tailor welded blanks: experiment and FE simulation. Manufacturing Review. 3, 8. https://doi.org/10.1051/mfreview/2016009

Zhou D, Yuan X, Gao H, Wang A, Liu J, El Fakir O, Politis DJ, Wang L, Lin J, 2016. Knowledge Based Cloud FE Simulation of Sheet Metal Forming Process, Journal of Visualized Experiments. https://dx.doi.org/10.3791/53957

Gao H, El Fakir O., Wang L, Politis D.J., Li Z., 2017. Forming limit prediction for hot stamping processes featuring non-isothermal and complex loading conditions. International Journal of Mechanical Sciences. 131-132, 792-810. https://doi.org/10.1016/j.ijmecsci.2017.07.043