Modeling and simulation of laser shock waves in elasto-plastic 1D layered specimens
Article dans une revue avec comité de lecture
Auteur
Date
2022Journal
International Journal of Solids and StructuresRésumé
The aim of this paper is to study the effect of microstructure heterogeneity upon elasto-plastic wave propagation generated during laser shot peening. We consider a simplified elasto-plastic laminate specimen subjected to uniaxial strain. The microstructure is composed of two phases alternating periodically and perfectly bonded together. The associated PDE system is solved using a high-resolution Godunov scheme, allowing to study the wave propagation in the heterogeneous structure. It is found that, even for a small mechanical contrast between the two phases, the considered laminate microstructure has a significant effect on the distribution of plastic strain. In addition, an elasto-plastic homogenization of the laminate has been carried out, and the resulting Homogeneous Equivalent Medium (HEM) has been used to decrease the computation time of the wave propagation. The HEM-based model is able to reproduce accurately the full-field solution in terms of distribution of mean plastic strain within the specimen and its fluctuation between the two phases.
Fichier(s) constituant cette publication
- Nom:
- PIMM_IJSS_2022_LAPOSTOLLE.pdf
- Taille:
- 1.233Mo
- Format:
- Fin d'embargo:
- 2022-09-01
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Article dans une revue avec comité de lecture
DERRIEN, Katell; BERTHE, Laurent;
LAPOSTOLLE, Lucas;
CASTELNAU, Olivier; MORIN, Léo (Elsevier, 2022-11)
The aim of this paper is to develop a model allowing a fast first approximate estimation of the elastic–plastic stress wave propagation caused by a laser impact and the resulting residual stress field. We start by modeling ... -
Article dans une revue avec comité de lectureMORIN, Léo; BRENNER, Renald; DERRIEN, Katell; DORHMI, Khaoula (Elsevier, 2021)The aim of this paper is to develop a periodic smoother based on splines for FFT-based solvers. Spurious oscillations in FFT-based methods are shown to be due to pseudo-spectral differentiation of discontinuous fields. An ...
-
Article dans une revue avec comité de lectureDERRIEN, Katell; MORIN, Léo; GILORMINI, Pierre (Elsevier Masson, 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 ...
-
Article dans une revue avec comité de lectureMORIN, LEO; GILORMINI, Pierre; DERRIEN, Katell (Springer Verlag, 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 ...
-
Article dans une revue avec comité de lectureDORHMI, Khaoula; DERRIEN, Katell; HADJEM-HAMOUCHE, Zehoua; MORIN, Léo; BONNET, Frédéric; CHEVALIER, Jean-Pierre (Elsevier BV, 2021)The aim of this paper is to investigate the effective properties of Fe–TiB2 composites obtained after hot or cold rolling. The elastic moduli of both hot and cold rolled composites are measured experimentally using several ...