Hyperelastic constitutive relationship for the strain-rate dependent behavior of shoulder and other joint cartilages
Paper
Paper/Presentation Title | Hyperelastic constitutive relationship for the strain-rate dependent behavior of shoulder and other joint cartilages |
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Presentation Type | Paper |
Authors | Thibbotuwawa, N. (Author), Oloyede, A. (Author), Senadeera, W. (Author) and Gu, Y. T. (Author) |
Editors | Goh, James |
Journal or Proceedings Title | IFMBE Proceedings, Vol. 43 2014 |
ERA Conference ID | 60405 |
Journal Citation | 43, pp. 255-258 |
Number of Pages | 4 |
Year | 2014 |
Place of Publication | Heidelberg, Germany |
ISBN | 9783319029122 |
9783319029139 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/978-3-319-02913-9_65 |
Web Address (URL) of Paper | http://link.springer.com/book/10.1007/978-3-319-02913-9/page/4 |
Conference/Event | 15th International Conference on Biomedical Engineering (ICBME 2013) |
International Conference on Biomedical Engineering (ICBME) | |
Event Details | 15th International Conference on Biomedical Engineering (ICBME 2013) Event Date 04 to end of 07 Dec 2013 Event Location Singapore |
Event Details | International Conference on Biomedical Engineering (ICBME) ICBME |
Abstract | Non-linear finite deformations of articular cartilages under physiological loading conditions can be attributed to hyperelastic behavior. This paper contains experimental results of indentation tests in finite deformation and proposes an empirical based new generalized hyperelastic constitutive model to account for strain-rate dependency for humeral head cartilage tissues. The generalized model is based on existing hyperelastic constitutive relationships that are extensively used to represent biological tissues in biomechanical literature. The experimental results were obtained for three loading velocities, corresponding to low (1x10-3 s-1), moderate and high strain-rates (1x10-1 s-1), which represent physiological loading rates that are experienced in daily activities such as lifting, holding objects and sporting activities. Hyperelastic material parameters were identified by non-linear curve fitting procedure. Analysis demonstrated that the material behaviour of cartilage can be effectively decoupled into strain-rate independent (elastic) and dependent parts. Further, experiments conducted using different indenters indicated that the parameters obtained are significantly affected by the indenter size,potentially due to structural inhomogeneity of the tissue. The hyperelastic constitutive model developed in this paper opens a new avenue for the exploration of material properties of cartilage tissues. |
Keywords | articular cartilage, constitutive relationship,hyperelasticity, strain-rate, cartilage material properties |
ANZSRC Field of Research 2020 | 401706. Numerical modelling and mechanical characterisation |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Queensland University of Technology |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3wzw/hyperelastic-constitutive-relationship-for-the-strain-rate-dependent-behavior-of-shoulder-and-other-joint-cartilages
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