Probabilistic model of human cortical bones with uncertain mechanical properties: Modelling and identification with experimental measurements in ultrasonic range
Abstract
The biomechanical materials are among the most complex mechanical systems. Most often, their micro-structure are complex and random. This is the case for the human cortical bones which are considered in this paper. For such a system, the microstructure can be altered near its interface with the marrow (osteoporosis). A gradient of porosity is then observed in the thickness direction but, in this case, none usual theory of porous materials can be applied. For this reason, we present a simplified model with gradient for the elasticity tensor. The predictability of this model is improved by taking into account uncertainties. The elasticity tensor is then modeled by a random field. This random model is well adapted for the modeling of the random experimental measurements in ultrasonic range for the human cortical bone.
Fichier principal
conference-2010-CSM-Rhodes-13-16-June-desceliers-soize-naili-grimal-talmant.pdf (187.16 Ko)
Télécharger le fichier
Origin : Files produced by the author(s)
Loading...