Influence of mesh size and element type on apparent yield properties of microCT based finite element models of human trabecular bone

T. Gross, D. H. Pahr

Research output: Contribution to book/report/conference proceedingContribution to conference proceeding

2 Citations (Scopus)

Abstract

Mechanical competence of cancellous bone can be investigated by means of the finite element (FE) method. Different meshing techniques were compared by analyzing μCT based nonlinear FE models of 4 trabecular bone structures (BV/TV range: 5-35%). μFE models with 24 μm isotropic hexahedral (hex) elements were generated by direct voxel conversion while linear tetrahedral (tet) and quadratic tetrahedral (tet2) models were generated with different element sizes (range: 20-100 μm) using a volume conserving meshing algorithm (Simpleware Ltd). The different models were analyzed under compression until apparent level yielding. For tet2 models, apparent stiffness and yield properties did not change with varying element size. Compared to quadratic tet2 models, linear tet models showed an overestimation of 10-20% while hexahedral (hex) μFE models showed only slight deviations. The study concludes that apparent yield properties of trabecular bone structures can be accurately modeled using coarse quadratic tetrahedral finite element models.

Original languageEnglish
Title of host publicationComputational Vision and Medical Image Processing IV - Proceedings of Eccomas Thematic Conference on Computational Vision and Medical Image Processing, VIPIMAGE 2013
EditorsJoão Manuel, R.S. Tavares, R.M. Natal Jorge
PublisherCRC Press/Balkema
Pages415-418
Number of pages4
ISBN (Print)9781138000810
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event4th Eccomas Thematic Conference on Computational Vision and Medical Image Processing, VIPIMAGE 2013 - Funchal, Portugal
Duration: 14 Oct 201316 Oct 2014

Publication series

NameComputational Vision and Medical Image Processing IV - Proceedings of Eccomas Thematic Conference on Computational Vision and Medical Image Processing, VIPIMAGE 2013

Conference

Conference4th Eccomas Thematic Conference on Computational Vision and Medical Image Processing, VIPIMAGE 2013
Country/TerritoryPortugal
CityFunchal
Period14.10.201316.10.2014

Keywords

  • Cancellous bone
  • Mechanical behavior
  • MicroCT
  • MicroFE
  • Yield properties

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Biomedical Engineering
  • Electrical and Electronic Engineering

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