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. Author manuscript; available in PMC: 2007 Aug 8.
Published in final edited form as: J Biomech. 2006;39(4):595–602. doi: 10.1016/j.jbiomech.2005.01.009

Fig. 6.

Fig. 6

Stress concentration patterns in the mineral layer 2 as a function of the stiffness ratio of the collagen phase vs. the mineral phase (G/Em) For a more compliant collagen phase (G/Em = 0.01), the stress concentration region is significantly expanded compared with a stiffer collagen phase (G/Em = 0.1) For ease of analysis, the following material and spatial properties of the mineral and collagen phases are employed: Em = 100 GPa, n = 3, h/d = 1.0, where G is the shear stiffness of the collagen phase, Em is the elastic modulus of the mineral phase, n is the collagen non-linearity factor, h and d are the thickness of the collagen and mineral phases, respectively.