On the strength-ductility modifications in pure copper after severe plastic deformation
International audience
On the strength-ductility modifications in pure copper after severe plastic deformation
The aim of this work is to investigate experimentally and numerically the modifications of both strength and ductility after processing by severe plastic deformation, using several passes of repetitive corrugation and straightening on sheets made of pure copper. Experimental stress–strain curves are determined before and after processing in order t...
Strength criterion of porous media: Application of homogenization techniques
International audience
A micromechanical analysis of elastoplastic behavior of porous materials
In this paper, we present a micromechanical analysis of elastoplastic behavior of porous materials. The non-uniform transformation field analysis (NTFA) is used and the non-uniform distribution of local plastic strain in the solid matrix is taken into account. Comparisons with the classical Gurson's model and standard FEM solution are presented.
