Comptes Rendus
no. 6
On the identifiability of the Hill-1948 model with one uniaxial tensile test
[De l'identifiabilité du modèle de Hill-1948 à l'aide d'un seul essai de traction unixiale]
Morgan Bertin1 ; François Hild1  ; Stéphane Roux1
1 LMT (ENS Paris-Saclay, CNRS, Université Paris-Saclay), 61, avenue du Président-Wilson, 94235 Cachan cedex, France
Comptes Rendus. Mécanique, Volume 345 (2017) no. 6, pp. 363-369.

Un essai de traction uniaxiale est conduit sur un échantillon en acier inoxydable 17-7 à durcissement structural. Un montage anti-plissement permet la caractérisation du comportement mécanique par corrélation d'images numériques intégrée (CINI). Il est montré que ce seul essai analysé par CINI possède assez d'information (voire plus) pour une identification complète du modèle de plasticité anisotrope.

A uniaxial experiment is performed on an ultra-thin specimen made of 17-7 precipitation hardened stainless steel. An anti-wrinkling setup allows for the characterization of the mechanical behavior with Integrated Digital Image Correlation (IDIC). The result shows that a single uniaxial experiment investigated via IDIC possesses enough data (and even more) to characterize a complete anisotropic elastoplastic model.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crme.2017.04.001
Keywords: Digital Image Correlation (DIC), Full field measurements, Identification, Plastic anisotropy
Mot clés : Corrélation d'images numériques (CIN), Mesures de champ, Identification, Anisotropie plastique
Morgan Bertin 1 ; François Hild 1 ; Stéphane Roux 1

1 LMT (ENS Paris-Saclay, CNRS, Université Paris-Saclay), 61, avenue du Président-Wilson, 94235 Cachan cedex, France 
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Morgan Bertin; François Hild; Stéphane Roux. On the identifiability of the Hill-1948 model with one uniaxial tensile test. Comptes Rendus. Mécanique, Volume 345 (2017) no. 6, pp. 363-369. doi : 10.1016/j.crme.2017.04.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2017.04.001/

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