Titre :

1D strain rate-dependent constitutive model of UHMWPE: From crystalline network to fibrillar structure behavior

Auteur(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]

Titre de la revue :

Mechanics of Materials

Nom court de la revue :

Mechanics of Materials

Pagination :

103129

Éditeur :

Elsevier BV

Date de publication :

2019-10

ISSN :

0167-6636

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Autres travaux scientifiques

Date de dépôt :

2020-02-03T14:12:45Z
2020-02-04T09:36:12Z
2020-02-27T14:52:52Z