1D strain rate-dependent constitutive model ...
Document type :
Article dans une revue scientifique: Article original
Permalink :
Title :
1D strain rate-dependent constitutive model of UHMWPE: From crystalline network to fibrillar structure behavior
Author(s) :
Deplancke, Tiana [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
Fivel, Marc [Auteur]
Science et Ingénierie des Matériaux et Procédés [SIMaP]
Lame, Olivier [Auteur]
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]

Unité Matériaux et Transformations (UMET) - UMR 8207
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
Fivel, Marc [Auteur]
Science et Ingénierie des Matériaux et Procédés [SIMaP]
Lame, Olivier [Auteur]
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
Journal title :
Mechanics of Materials
Abbreviated title :
Mechanics of Materials
Pages :
103129
Publisher :
Elsevier BV
Publication date :
2019-10
ISSN :
0167-6636
HAL domain(s) :
Chimie/Matériaux
Chimie/Polymères
Chimie/Polymères
English abstract : [en]
A combined experimental and analytical investigation has been performed to understand and predict the mechanical behavior of UHMWPE with different molecular weights: 0.6; 3.9 and 10.5 Mg.mol −1. These materials were tested ...
Show more >A combined experimental and analytical investigation has been performed to understand and predict the mechanical behavior of UHMWPE with different molecular weights: 0.6; 3.9 and 10.5 Mg.mol −1. These materials were tested to a wide range of strain rates using uniaxial compression tests on a servo-hydraulic testing machine (10 −4 to 10 s −1). A hyperelastic-viscoplastic approach based on a relevant physical basis was adopted to predict the mechanical behavior of UHMWPE. The key point of the proposed model is to capture the huge microstructural evolution which occurs during fibrillation (crystalline network collapse) through a mechanical coupling parameter between the confined amorphous phase and the crystal stacks. The description of the amorphous phase is split in two parts, confined and global macromolecular networks in order to account for experimental results such as the huge strain recovery observed even after large plastic deformation of UHMWPE. It is found that this model successfully describes the compressive hyperelastic-viscoplastic behavior of sin-tered UHMWPE for different molecular weights over a wide range of strain rates and can be qualitatively extended to high strain rate and tensile loading.Show less >
Show more >A combined experimental and analytical investigation has been performed to understand and predict the mechanical behavior of UHMWPE with different molecular weights: 0.6; 3.9 and 10.5 Mg.mol −1. These materials were tested to a wide range of strain rates using uniaxial compression tests on a servo-hydraulic testing machine (10 −4 to 10 s −1). A hyperelastic-viscoplastic approach based on a relevant physical basis was adopted to predict the mechanical behavior of UHMWPE. The key point of the proposed model is to capture the huge microstructural evolution which occurs during fibrillation (crystalline network collapse) through a mechanical coupling parameter between the confined amorphous phase and the crystal stacks. The description of the amorphous phase is split in two parts, confined and global macromolecular networks in order to account for experimental results such as the huge strain recovery observed even after large plastic deformation of UHMWPE. It is found that this model successfully describes the compressive hyperelastic-viscoplastic behavior of sin-tered UHMWPE for different molecular weights over a wide range of strain rates and can be qualitatively extended to high strain rate and tensile loading.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Submission date :
2020-02-03T14:12:45Z
2020-02-04T09:36:12Z
2020-02-27T14:52:52Z
2020-02-04T09:36:12Z
2020-02-27T14:52:52Z