A homogenization-based damage model for stiffness loss in ductile metal-matrix composites(Article)
TypeArticles dans des revues avec comité de lecture
The aim of this paper is to develop a homogenized model that permits to describe the progressive loss of stiffness observed experimentally on ductile metal-matrix composites subjected to mechanical loadings. A two-step homogenization procedure is proposed to describe the effect of damage on the elastic properties. Since damage is solely driven by plastic deformation, a Gurson-type model is considered to describe the nucleation and growth of voids. Completed by appropriate evolution equations of the microstructure, this model of plasticity is used to update the elastic properties that are described by a mean-field homogenization scheme. The complete incremental model is implemented numerically and applied to the prediction of the stiffness loss. The model predictions are in very good agreement with experimental results on Al-SiC composites, cast irons and steel composites.
Files in this item
Showing items related by title, author, creator and subject.
Designing isotropic composites reinforced by aligned transversely isotropic particles of spheroidal shape DERRIEN, Katell; MORIN, Léo; GILORMINI, Pierre (2018)The aim of this paper is to study the design of isotropic composites reinforced by aligned spheroidal particles made of a transversely isotropic material. The problem is investigated analytically using the framework of ...
MORIN, LEO; GILORMINI, Pierre; DERRIEN, Katell (Springer, 2020)The aim of this short paper is to provide, for elasticity tensors, generalized Euclidean distances that preserve the property of invariance by inversion. First, the elasticity law is expressed under a non-dimensional form ...
In-situ experimental and numerical studies of the damage evolution and fracture in a Fe-TiB2 composite HADJEM-HAMOUCHE, Z.; DERRIEN, Katell; HÉRIPRÉ, E.; CHEVALIER, Jean-Pierre (Elsevier, 2018)A joint experimental and modelling study of plastic strain and ensuing damage in a novel metal matrix composite (Fe-TiB2) is presented. Damage is observed and quantified using SEM images processing and Acoustic Emission ...
The effect of moisture-induced swelling on the absorption capacity of transversely isotropic elastic polymer-matrix composites DERRIEN, Katell; GILORMINI, Pierre (Elsevier, 2009)The interaction between humid air and transversely isotropic fiber-reinforced composites with swelling polymeric matrix is considered. A model is proposed for the water saturation level in a polymer when stresses are ...
DERRIEN, Katell; GILORMINI, Pierre (Elsevier, 2007)The relation between saturation moisture content in a polymer and applied stresses is derived as a function of the coefficient of moisture expansion. The model predictions are compared favourably with experimental data ...