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A novel micromorphic approach captures non-locality in continuum bone remodelling

Author

Listed:
  • Anna Titlbach
  • Areti Papastavrou
  • Andrew McBride
  • Paul Steinmann

Abstract

In continuum bone remodelling, bone is considered as continuous matter on the macroscale. Motivated by i) the underlying trabecular microstructure of bone resulting in size-dependence and ii) the non-local characteristics of osteocyte mechanosensing, a novel phenomenological approach based on a micromorphic formulation is proposed. Via illustrative benchmark examples, i.e. elementary unit cube, rod-shaped bone samples, and a 3D-femur sample, the novel approach is compared to the established local formulation, and the influence of the characteristic size of the microcontinuum and the coupling between macro- and microscale deformation is analysed. Taken together, the interaction between continuum points at the macroscale and their neighbourhood is effectively captured by the micromorphic formulation thus influencing the resulting distribution of nominal bone density at the macroscale.

Suggested Citation

  • Anna Titlbach & Areti Papastavrou & Andrew McBride & Paul Steinmann, 2024. "A novel micromorphic approach captures non-locality in continuum bone remodelling," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 27(8), pages 1042-1055, June.
    • Handle: RePEc:taf:gcmbxx:v:27:y:2024:i:8:p:1042-1055
    DOI: 10.1080/10255842.2023.2223331
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