Models to represent the mechanical behavior of the annulus fibrosus are important tools to understand the biomechanics of the spine. Many hyperelastic constitutive equations have been proposed to simulate the mechanical behavior of the annulus that incorporate the anisotropic nature of the tissue. Recent approaches [1,2] have included terms into the energy function which take into account fiber-fiber and fiber-matrix interactions, leading to complex functions that cannot be readily implemented into commercial finite element codes for an efficient simulation of nonlinear realistic models of the spine (which are generally composed of 100,000+ degrees of freedom). An effort is undertaken here to test the capability of a relatively simple strain energy function [3] for the description of the annulus fibrosus. This function has already been shown to successfully represent the mechanical behavior of the arterial tissue and can be readily implemented into existing finite element codes.
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ASME 2009 Summer Bioengineering Conference
June 17–21, 2009
Lake Tahoe, California, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4891-3
PROCEEDINGS PAPER
A Simplified Strain Energy Function to Represent the Mechanical Behavior of the Annulus Fibrosus
Jose J. García,
Jose J. García
Universidad del Valle, Cali, Columbia
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Christian Puttlitz
Christian Puttlitz
Colorado State University, Fort Collins, CO
Search for other works by this author on:
Jose J. García
Universidad del Valle, Cali, Columbia
Christian Puttlitz
Colorado State University, Fort Collins, CO
Paper No:
SBC2009-206261, pp. 121-122; 2 pages
Published Online:
July 19, 2013
Citation
García, JJ, & Puttlitz, C. "A Simplified Strain Energy Function to Represent the Mechanical Behavior of the Annulus Fibrosus." Proceedings of the ASME 2009 Summer Bioengineering Conference. ASME 2009 Summer Bioengineering Conference, Parts A and B. Lake Tahoe, California, USA. June 17–21, 2009. pp. 121-122. ASME. https://doi.org/10.1115/SBC2009-206261
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