Titre :

Micromechanical based model for predicting aged rubber fracture properties

Auteur(s) :

Kadri, R. [Auteur]
Unité de Mécanique de Lille - ULR 7512 [UML]
Nait Abdelaziz, M. [Auteur]
Unité de Mécanique de Lille - ULR 7512 [UML]
Fayolle, B. [Auteur]
Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
Ayoub, G. [Auteur]
University of Michigan [Dearborn]
Hassine, M. Ben [Auteur]
EDF Labs
Nziakou, Y. [Auteur]
Sciences et Ingénierie de la Matière Molle (UMR 7615) [SIMM]

Titre de la revue :

International Journal of Fracture

Pagination :

125-142

Éditeur :

Springer Verlag

Date de publication :

2023

ISSN :

0376-9429

Mot(s)-clé(s) en anglais :

Aging
Rubber materials
Fracture properties
Micromechanical modeling
Damage

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des matériaux [physics.class-ph]

Résumé en anglais : [en]

Environmental aging induces a slow and irreversible alteration of the rubber material’s macromolecular network. This alteration is triggered by two mechanisms which act at the microscale: crosslinking and chain scission. ...
Lire la suite >Environmental aging induces a slow and irreversible alteration of the rubber material’s macromolecular network. This alteration is triggered by two mechanisms which act at the microscale: crosslinking and chain scission. While crosslinking induces an early hardening of the material, chain scission leads to the occurrence of dangling chains responsible of the damage at the macromolecular scale. Consequently, the mechanical behavior as well as the fracture properties are affected. In this work, the effect of aging on the mechanical behavior up to fracture of elastomeric materials and the evolution of their fracture properties are first experimentally investigated. Further, a modeling attempt using an approach based upon a micro-mechanical but physical description of the aging mechanisms is proposed to predict the mechanical and fracture properties evolution of aged elastomeric materials. The proposed micro-mechanical model incorporates the concepts of residual stretch associated with the crosslinking mechanism and a so-called “healthy” elastic active chain (EAC) density associated with chain scission mechanism. The validity of the proposed approach is assessed using a wide set of experimental data either generated by the authors or available in the literature.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Unité de Mécanique de Lille (UML) - ULR 7512

Source :

Harvested from HAL