[Solution approchée du problème de l'indentation cônique et diédrique de matériaux élastoplastiques]
Le modèle développé dans cette Note permet de déterminer la valeur de la pression moyenne d'indentation (habituellement dénomée dureté) à partir des propriétés élastoplastiques des matériaux. L'approximation développée repose sur la définition d'un solide élastique linéaire dont la pression moyenne d'indentation est la même que celle du matériau réellement indenté. Une méthode d'identification de la courbe contrainte-déformation uniaxiale à partir d'essais d'indentation est proposée. Les résultats sont ensuite validés à l'aide de calculs par éléments finis.
The model developed in this Note makes it possible to determine the value of the mean indentation pressure usually named hardness from the elastoplastic properties of materials and also the shape of the cone or that of the wedge. The approximation rests upon the definition of a linear elastic solid which has the same indentation pressure as the material actually indented. Cases of cone and wedge indentation are studied. A method to determine the uniaxial stress–strain curve of materials from indentation tests is given. The results are validated using finite element simulations.
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Publié le :
Mot clés : Solides et structures, Indentation cônique, Elastoplasticité, Contrainte représentative, Méthode d'identification
Guillaume Kermouche 1 ; Jean-Luc Loubet 2 ; Jean-Michel Bergheau 1
@article{CRMECA_2005__333_5_389_0,
author = {Guillaume Kermouche and Jean-Luc Loubet and Jean-Michel Bergheau},
title = {An approximate solution to the problem of cone or wedge indentation of elastoplastic solids},
journal = {Comptes Rendus. M\'ecanique},
pages = {389--395},
publisher = {Elsevier},
volume = {333},
number = {5},
year = {2005},
doi = {10.1016/j.crme.2005.04.001},
language = {en},
}
TY - JOUR AU - Guillaume Kermouche AU - Jean-Luc Loubet AU - Jean-Michel Bergheau TI - An approximate solution to the problem of cone or wedge indentation of elastoplastic solids JO - Comptes Rendus. Mécanique PY - 2005 SP - 389 EP - 395 VL - 333 IS - 5 PB - Elsevier DO - 10.1016/j.crme.2005.04.001 LA - en ID - CRMECA_2005__333_5_389_0 ER -
%0 Journal Article %A Guillaume Kermouche %A Jean-Luc Loubet %A Jean-Michel Bergheau %T An approximate solution to the problem of cone or wedge indentation of elastoplastic solids %J Comptes Rendus. Mécanique %D 2005 %P 389-395 %V 333 %N 5 %I Elsevier %R 10.1016/j.crme.2005.04.001 %G en %F CRMECA_2005__333_5_389_0
Guillaume Kermouche; Jean-Luc Loubet; Jean-Michel Bergheau. An approximate solution to the problem of cone or wedge indentation of elastoplastic solids. Comptes Rendus. Mécanique, Volume 333 (2005) no. 5, pp. 389-395. doi : 10.1016/j.crme.2005.04.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2005.04.001/
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