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Parameter identification of 42CrMo4 steel hot forging plastic flow behaviour using industrial upsetting presses and finite element simulations

Résumé : An experimental-numerical methodology was proposed for the parameter identification of constitutive laws, when applied to hot forging. Industrial presses were directly used to generate the reference experiments for identification. The strain and temperature heterogeneity that appears during on-press compression experiments was taken into account by an FE-based inverse method. Specific experiments were designed for the identification of the heat transfer and friction coefficients. A testing tool was designed and instrumented with displacement sensors and a force cell. This was then used on a hydraulic press and a screw press in order to cover a large range of strain rates. The identified parameter set was validated with respect to specialized plastometers, and a semi industrial validation forging process. A reasonable accuracy was observed, particularly in realistic forging conditions
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https://hal.archives-ouvertes.fr/hal-03711278
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Submitted on : Friday, July 1, 2022 - 11:42:13 AM
Last modification on : Friday, August 5, 2022 - 2:54:00 PM

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Gabriel Venet, Cyrille Baudouin, Corentin Pondaven, Régis Bigot, Tudor Balan. Parameter identification of 42CrMo4 steel hot forging plastic flow behaviour using industrial upsetting presses and finite element simulations. International Journal of Material Forming, Springer Verlag, 2021, 14, pp.929-945. ⟨10.1007/s12289-020-01609-1⟩. ⟨hal-03711278⟩

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