Elastic modulus of hard tissues

Benny Bar-On, H. Daniel Wagner

Research output: Contribution to journalArticlepeer-review

Abstract

This work aims at evaluating the elastic modulus of hard biological tissues by considering their staggered platelet micro-structure. An analytical expression for the effective modulus along the stagger direction is formulated using three non-dimensional structural variables. Structures with a single staggered hierarchy (e.g. collagen fibril) are first studied and predictions are compared with the experimental results and finite element simulations from the literature. A more complicated configuration, such as an array of fibrils, is analyzed next. Finally, a mechanical model is proposed for tooth dentin, in which variations in the multi-scale structural hierarchy are shown to significantly affect the macroscopic mechanical properties.

Original languageAmerican English
Pages (from-to)672-678
Number of pages7
JournalJournal of Biomechanics
Volume45
Issue number4
DOIs
StatePublished - 23 Feb 2012

Keywords

  • Bio-composites
  • Bio-mechanics
  • Nano-composites
  • Staggered structures

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Orthopedics and Sports Medicine
  • Biomedical Engineering
  • Rehabilitation

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