Viscoelastic constitutive law in large deformations: application to human knee ligaments and tendons

Détails

ID Serval
serval:BIB_ACB6E1C4D6A3
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Viscoelastic constitutive law in large deformations: application to human knee ligaments and tendons
Périodique
Journal of Biomechanics
Auteur⸱e⸱s
Pioletti  D. P., Rakotomanana  L. R., Benvenuti  J. F., Leyvraz  P. F.
ISSN
0021-9290 (Print)
Statut éditorial
Publié
Date de publication
08/1998
Volume
31
Numéro
8
Pages
753-7
Notes
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Aug
Résumé
Traction tests on soft tissues show that the shape of the stress strain curves depends on the strain rate at which the tests are performed. Many of the constitutive models that have been proposed fail to properly consider the effect of the strain rate when large deformations are encountered. In the present study, a framework based on elastic and viscous potentials is developed. The resulting constitutive law is valid for large deformations and satisfies the principles of thermodynamics. Three parameters -- two for the elasticity and one for the viscosity -- were enough to precisely fit the non-linear stress strain curves obtained at different strain rates with human cruciate ligaments and patellar tendons. The identification results then in a realistic, three-dimensional viscoelastic constitutive law. The developed constitutive law can be used regardless of the strain or rotation values. It can be incorporated into a finite element program to model the viscoelastic behavior of ligaments and tendons under dynamic situations.
Mots-clé
Algorithms Anterior Cruciate Ligament/anatomy & histology/*physiology Elasticity Finite Element Analysis Humans Knee Joint Models, Biological Nonlinear Dynamics Patellar Ligament/anatomy & histology/*physiology Posterior Cruciate Ligament/anatomy & histology/*physiology Reproducibility of Results Rotation Stress, Mechanical Thermodynamics Viscosity
Pubmed
Web of science
Création de la notice
28/01/2008 13:22
Dernière modification de la notice
20/08/2019 16:16
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