Mechanical behaviour of single mineralized collagen fibril using finite element simulation coupled to quasi-brittle damage law

Numerical modeling of biocomposite at different length scales will provide improved understanding of the mechanical behavior of structures such as bone, and also guide the development of multiscale mechanical models. In this study, a new three-dimensional model based on finite elements method (FEM) was achieved to model the hierarchical structure- compounds properties relationship at the sub-structure scale (minera-lized collagen fibrils) and investigate its nanomechanical equivalents properties Furthermore, fracture strength/strain of fibril model was different from those reported for collagenous tissues of higher hierarchical levels, indicating the importance of obtaining these properties at the fibrillar level for multiscale modeling. Here, the results of finite element simulations coupled to quasi-brittle damage law were reported to probe the mechanical response of mineralized collagen fibril subjected to uniaxial tension.

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