This paper presents a methodology to model a blanking process using a continuum mechanical damage model. A variant of the Lemaitre model, in which the quasi-unilateral conditions are taken into consideration to modify the damage behavior under compressive stress states, is selected as material model. S45C high-carbon steel is analyzed experimentally. To characterize the damage behavior of the material, notched round bar tensile tests with three different notch radii (6 mm, 10 mm, and 20 mm) using image analysis are performed. Using digital image processing, the strain at the deformation zone can be computed for the load–strain curves. Those curves are used as an objective function to determine the parameters of the Lemaitre damage model. The experimental results are compared with the results of the FE analysis of the tensile test. The identified model parameters are used in numerical investigations of axisymmetric blanking. The effect of the model's extension to quasi-unilateral damage evolution is discussed. The crack progress in high-carbon steel sheet during blanking and the final sheared part morphology are predicted and compared with the experimental results. Sheared surface and burr height obtained by the analysis coincide with the results of the blanking experiment.
Accepted:
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Kerim Isik 1; Yoshinori Yoshida 2; Lin Chen 3; Till Clausmeyer 1; A. Erman Tekkaya 1
@article{CRMECA_2018__346_8_770_0,
author = {Kerim Isik and Yoshinori Yoshida and Lin Chen and Till Clausmeyer and A. Erman Tekkaya},
title = {Modelling of the blanking process of high-carbon steel using {Lemaitre} damage model},
journal = {Comptes Rendus. M\'ecanique},
pages = {770--778},
publisher = {Elsevier},
volume = {346},
number = {8},
year = {2018},
doi = {10.1016/j.crme.2018.05.003},
language = {en},
}
TY - JOUR AU - Kerim Isik AU - Yoshinori Yoshida AU - Lin Chen AU - Till Clausmeyer AU - A. Erman Tekkaya TI - Modelling of the blanking process of high-carbon steel using Lemaitre damage model JO - Comptes Rendus. Mécanique PY - 2018 SP - 770 EP - 778 VL - 346 IS - 8 PB - Elsevier DO - 10.1016/j.crme.2018.05.003 LA - en ID - CRMECA_2018__346_8_770_0 ER -
%0 Journal Article %A Kerim Isik %A Yoshinori Yoshida %A Lin Chen %A Till Clausmeyer %A A. Erman Tekkaya %T Modelling of the blanking process of high-carbon steel using Lemaitre damage model %J Comptes Rendus. Mécanique %D 2018 %P 770-778 %V 346 %N 8 %I Elsevier %R 10.1016/j.crme.2018.05.003 %G en %F CRMECA_2018__346_8_770_0
Kerim Isik; Yoshinori Yoshida; Lin Chen; Till Clausmeyer; A. Erman Tekkaya. Modelling of the blanking process of high-carbon steel using Lemaitre damage model. Comptes Rendus. Mécanique, Computational modeling of material forming processes Simulation numérique des procédés de mise en forme, Volume 346 (2018) no. 8, pp. 770-778. doi : 10.1016/j.crme.2018.05.003. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2018.05.003/
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