Singularity-free finite element model of bone through automated voxel-based reconstruction

L. Esposito, P. Bifulco, P. Gargiulo and M. Fraldi

Computer Methods in Biomechanics and Biomedical Engineering, 2016, vol. 19, issue 3, 257-262

Abstract: Computed tomography (CT) provides both anatomical and density information about tissues. Bone is segmented by raw images and Finite Element Method (FEM) voxel-based meshing technique is achieved by matching each CT voxel to a single finite element (FE). As a consequence of the automated model reconstruction, unstable elements – i.e. elements insufficiently anchored to the whole model and thus potentially involved in partial rigid body motion – can be generated, a crucial problem in obtaining consistent FE models, hindering mechanical analyses. Through the classification of instabilities on topological connections between elements, a numerical procedure is proposed in order to avoid unconstrained models.

Date: 2016
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DOI: 10.1080/10255842.2015.1014347

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