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Anisotropic viscohyperelastic behavior of intervertebral discs: Modeling and experimental validation
Author(s) -
Azarnoosh Marzieh,
Stoffel Marcus,
Markert Bernd
Publication year - 2014
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201410033
Subject(s) - anisotropy , cartilage , intervertebral disc , materials science , fiber , core (optical fiber) , collagen fiber , biomedical engineering , computer science , anatomy , composite material , engineering , physics , medicine , optics
Biomechanical investigations of human cartilage, especially intervertebral discs (IVDs), have greatly helped to improve people's health over the last several decades. The study of the underlying biomechanical characteristics of cartilage tissues is a key issue to understand its physiological function and degeneration or damage behavior. The aim of this investigation is to describe the biomechnical behavior of healthy sheep IVDs under various loading conditions. Experimental and cartilage histological data, including fiber orientation, are used to develop a viscohyperelastic material model, which allowed us to numerically study the mechanical behavior of IVDs, consisting of a cartilaginous, fiber‐reinforced ring surrounding a highly hydrated, gelatinous core. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)