Biology – Quantitative Biology – Tissues and Organs
Scientific paper
2011-07-06
Procedia engineering 10 (2011) 3193-3198
Biology
Quantitative Biology
Tissues and Organs
6; http://www.sciencedirect.com/science/article/pii/S1877705811007144
Scientific paper
10.1016/j.proeng.2011.04.526
Bone is a multiscale heterogeneous materiel of which principal function is to support the body structure and to resist mechanical loading and fractures. Bone strength does not depend only on the quantity and quality of bone which is characterized by the geometry and the shape of bones but also on the mechanical proprieties of its compounds, which have a significant influence on its deformation and failure. This work aim to use a 3D nano-scale finite element model coupled to the concept of quasi-brittle damage with the behaviour law isotropic elasticity to investigate the fracture behaviour of composite materiel collagen-mineral (mineralized collagen microfibril). Fracture stress-number of cross-links and damping capacity-number of cross-links curves were obtained under tensile loading conditions at different densities of the mineral phase. The obtained results show that number of cross-links as well as the density of mineral has an important influence on the strength of microfibrils which in turn clarify the bone fracture at macro-scale.
Barkaoui Abdelwahed
Bettamer Awad
Hambli Ridha
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