Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10463
Title: Parameter optimization for the visco-hyperelastic constitutive model of tendon using FEM
Authors: Tang, CY 
Ng, GYF 
Wang, ZW
Tsui, CP 
Zhang, G
Keywords: FEM
parameter optimization
Tendon
visco-hyperelasticity
Issue Date: 2011
Publisher: IOS Press
Source: Bio-medical materials and engineering, 2011, v. 21, no. 1, p. 9-24 How to cite?
Journal: Bio-medical materials and engineering 
Abstract: Numerous constitutive models describing the mechanical properties of tendons have been proposed during the past few decades. However, few were widely used owing to the lack of implementation in the general finite element (FE) software, and very few systematic studies have been done on selecting the most appropriate parameters for these constitutive laws. In this work, the visco-hyperelastic constitutive model of the tendon implemented through the use of three-parameter Mooney-Rivlin form and sixty-four-parameter Prony series were firstly analyzed using ANSYS FE software. Afterwards, an integrated optimization scheme was developed by coupling two optimization toolboxes (OPTs) of ANSYS and MATLAB for estimating these unknown constitutive parameters of the tendon. Finally, a group of Sprague-Dawley rat tendons was used to execute experimental and numerical simulation investigation. The simulated results showed good agreement with the experimental data. An important finding revealed that too many Maxwell elements was not necessary for assuring accuracy of the model, which is often neglected in most open literatures. Thus, all these proved that the constitutive parameter optimization scheme was reliable and highly efficient. Furthermore, the approach can be extended to study other tendons or ligaments, as well as any visco-hyperelastic solid materials.
URI: http://hdl.handle.net/10397/10463
ISSN: 0959-2989
EISSN: 1878-3619
DOI: 10.3233/BME-2011-0653
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