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Article Dans Une Revue Key Engineering Materials Année : 2015

Numerical Prediction Model of Temperature Effect on DP1000 Steel Damage during Warm Formability

Résumé

In this work experimental tensile tests were performed on a DP1000 steel at different temperature levels in the range (293-600) K. This experimental database was used for the identification of a Johnson-Cook constitutive model taking into account temperature effects. A critical void area fraction and a corresponding critical equivalent plastic strain were also identified from each temperature using a metallographic analysis previously described. This critical equivalent plastic strain was considered as a fracture criterion instead of the traditional fracture strain of the Johnson-Cook model and a corresponding damage parameter was determined in these specific conditions. Finally numerical simulations were carried out to analyze the influence of the temperature on the macroscopic critical fracture during a forming operation by bending.

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Matériaux
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Dates et versions

hal-03408696 , version 1 (29-10-2021)

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Citer

Oumer Keita, Pierre Antoine Dubos, Jerôme Chottin, Eric Hug. Numerical Prediction Model of Temperature Effect on DP1000 Steel Damage during Warm Formability. Key Engineering Materials, 2015, 651-653, pp.77-82. ⟨10.4028/www.scientific.net/KEM.651-653.77⟩. ⟨hal-03408696⟩
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