The Nonlinear Viscoelasticity of the Human Knee Articular Cartilage

DOI

10.2991/mme-16.2017.32How to use a DOI?

Keywords

Human knee joint, Cartilage, Constitutive, Viscoelasticity, Stress relaxation.

Abstract

The human knee cartilage play an important role in the knee joint. Osteoarthritis (OA) are related to knee joint cartilage. So the accurate description of the cartilage constitutive is the most important work for the understanding the cartilage test phenomenon. The role of viscoelasticity of collagen fibers in bovine articular cartilage was examined in compression and tension using stress relaxation measurements in the axial direction (normal to the articular surface. The human knee joint cartilage also shows the same viscoelastic property in compression and tension test using stress relaxation measurement in the direction (normal to the articular surface). The tension and compression test show the non-linear viscoelastic property. A viscoelastic fibril-reinforced model including fluid flow was used for analysis of the experimental data. The collagen fibrillar matrix was assumed to be viscoelastic with a strain-dependent tensile modulus, and the nonfibrillar matrix was modeled as linearly elastic. For axial tension, collagen viscoelasticity was found to account for most of the stress relaxation, while the effects of fluid pressurization on the tensile stress were negligible. So we use the viscoelastic constitutive to define the cartilage for simulating the tension and compression test. This study illustrates the essential and mainly role of collagen viscoelasticity.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Chao-Jie Wan
AU  - Gai-Min Li
AU  - Tong-Tong Guo
PY  - 2016/12
DA  - 2016/12
TI  - The Nonlinear Viscoelasticity of the Human Knee Articular Cartilage
BT  - Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)
PB  - Atlantis Press
SP  - 236
EP  - 241
SN  - 2352-5401
UR  - https://doi.org/10.2991/mme-16.2017.32
DO  - 10.2991/mme-16.2017.32
ID  - Wan2016/12
ER  -