| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bio-Nano Interfaces and Engineering Applications
|
| Presentation Title |
The Mechanical Significance of Sublamellar Organization of Mineralized Collagen Fibrils |
| Author(s) |
Sermin F. Utku |
| On-Site Speaker (Planned) |
Sermin F. Utku |
| Abstract Scope |
Bone consists mainly of Type I Collagen, hydroxyapatite, mucopolysaccharides and bone fluid. The collagen and mineral plate orientations affect bone mechanics. The organic component of lamellar bone was modelled to contract towards the mineral by dehydration, forming a contraction vector as the surface normal of the mineral plate. The amount of dehydration based contraction in the rotated collagen fibrils was calculated for the sublamellar model, where the mineral plate of the 0° [001] sublamellar collagen fibril was oriented along the y (010) plane. Projections of sublamellar contraction vectors were denoted as u, v and w displacements at 10°-20°-30° angles and summed to give the lamellar total and the anisotropy ratios of properties in directions parallel (w) versus perpendicular (u or v) to the osteon. The large variation in calculated wet and dry bone anisotropy ratios demonstrates the significance of the effect of collagen and mineral plate orientation on bone mechanics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Composites, Mechanical Properties |