Title :

A multiscale and multiaxial model for anisotropic damage and failure of human annulus fibrosus

Author(s) :

Tamoud, Abderrahman [Auteur]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Zairi, Fahmi [Auteur]
Laboratoire Génie Civil et géo-Environnement (LGCgE) - ULR 4515
Mesbah, Amar [Auteur]
Zairi, Fahed [Auteur]
Hôpital Privé Le Bois Ramsay Santé [Lille]

Journal title :

International Journal of Mechanical Sciences

Abbreviated title :

Int. J. Mech. Sci.

Volume number :

205

Pages :

106558

Publisher :

Elsevier

Publication date :

2021-09-01

ISSN :

0020-7403

English keyword(s) :

Multiscale
Multiaxial
Failure
Osmolarity
Damage

HAL domain(s) :

Sciences du Vivant [q-bio]
Sciences de l'ingénieur [physics]

English abstract : [en]

This article presents a multiscale model to predict deformation-induced damage and failure of human annulus fibrosus under multiaxial loading. In the modeling approach, formulated within the framework of nonlinear continuum ...
Show more >This article presents a multiscale model to predict deformation-induced damage and failure of human annulus fibrosus under multiaxial loading. In the modeling approach, formulated within the framework of nonlinear continuum mechanics, the hierarchical structure of the soft tissue is considered from the nano-sized collagen fibrils to the micro-sized oriented collagen fibers. At the macroscale, the multi-layered lamellar/inter-lamellar organization of the soft tissue is introduced by considering the effective interactions between adjacent layers. The stochastic process of progressive damage events operating at different scales of the solid phase is introduced for the extracellular matrix and the network of nano-sized fibrils/micro-sized fibers. The damage is made anisotropic due to lamellar oriented collagen fibers and special orientation distribution of the inter-fibrillar and inter-lamellar network of fibrils. The chemical-induced volumetric strain is also considered in our modeling approach to take into account the osmolarity effects along with the anisotropic time-dependent transversal deformations. The capacity of the model is discussed using a few available stretching datasets till failure along circumferential and radial directions. Model predictions under tilted stretching, biaxial stretching and shearing are also presented to illustrate further the efficiencies of our modeling approach. This work shows for the first time the directional effects on annulus mechanics and failure in relation to external loading mode, structure features, damage events and hydration.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CNRS
Centrale Lille
IMT Lille Douai
INSERM
Institut Catholique Lille
Univ. Artois
Université de Lille

Collections :

• Laboratoire de Mécanique, Multi-physique, Multi-échelle (LaMcube) - UMR 9013
• Laboratoire Génie Civil et géo-Environnement (LGCgE) - ULR 4515

Submission date :

2022-06-15T14:00:22Z
2023-02-24T17:18:27Z
2025-04-01T09:52:56Z