Author(s)

P Procházka & M Petrtýl

Abstract

In order to find appropriate implants of human skeleton parts, the behavior of real bones is to be studied from the standpoint of overall mechanical properties and the mechanical properties of individual phases, the bone bearing system is created of. The bone tissue can be considered as a composite medium, the overall properties of it are mostly given. Our interest is concentrated on local properties of phases of the bone tissue, starting with homogenization process, which includes localization, and consequently the local description of both stress and strain state. The unit cell is simplified to axisymmetric "laminated" hollow cylinder, and the localization is applied in such a way that the effect of very thin layers is suppressed by a special boundary element technique.

Keywords