Journal
BIOMECHANICS AND MODELING IN MECHANOBIOLOGY
Volume 3, Issue 2, Pages 67-74Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10237-004-0048-5
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This paper focuses on the ultrastructure of bone at a single lamella level. At this scale, collagen fibrils reinforced with apatite crystals are aligned preferentially to form a lamella. At the next structural level, such lamella are stacked in different orientations to form either osteons in cortical bone or trabecular pockets in trabecular bone. We use a finite element model, which treats small strain elasticity of a spatially random network of collagen fibrils, and compute anisotropic effective stiffness tensors and deformations of such a single lamella as a function of fibril volume fractions (or porosities), prescribed microgeometries, and fibril geometric and elastic properties.
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