Modelling fracture processes in bones 283
enabled the application of uniform external deformation and reaction forces
at both sides of the modelled cell. All the parameters were measured from
those images using the digital image analysis software, Image-Pro Express
(2005). The average diameters of osteon bres and Haversian canals were
99.89 μ m and 23.1 μ m, respectively. The random microstructure of the model
(Fig. 9.7c) was established using MATLAB7 (2007). Using a developed script,
the positions and diameters of osteons were chosen randomly based on the
hypersecant distribution curve until they lled 60% of an area with the same
dimensions as micrographs. Then, the Dagum (4P) distribution curve was
used to randomly choose the Haversian ...