Validation of an open source finite element biphasic poroelastic model. Application to the intervertebral disc biomechanics

A. P.G. Castro, W. Wilson, J. M. Huyghe, K. Ito, J. L. Alves

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A great amount of experimental and numerical studies have studied the Intervertebral Disc (IVD) and proven that it presents hyper-visco-poro-elastic behavior. However, the accessibility and flexibility of the software used in numerical studies is often hampered by the proprietary nature of the FEM-packages used. A novel, biphasic, poroelastic formulation was implemented on a home-developed, open source, FE solver in order to approach the biomechanical behavior of the IVD in the Human Spine. Firstly, a simple consolidation test with three different u/p-c elements was compared with Terzaghi's model. Secondly, three IVD FE models were built with the same three types of elements and tested through Heuer's experimental protocol. Terzaghi's test was important to validate the innovative biphasic poroelastic formulation. Such verdict was confirmed by the application of this formulation to the IVD FE model. Therefore, the in-development open source FE solver shall become an appropriate to the description of IVD.

Original languageEnglish
Title of host publicationPoromechanics V - Proceedings of the 5th Biot Conference on Poromechanics
Pages2131-2139
Number of pages9
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event5th Biot Conference on Poromechanics, BIOT 2013 - Vienna, Austria
Duration: 10 Jul 201312 Jul 2013

Publication series

NamePoromechanics V - Proceedings of the 5th Biot Conference on Poromechanics

Conference

Conference5th Biot Conference on Poromechanics, BIOT 2013
Country/TerritoryAustria
CityVienna
Period10/07/1312/07/13

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