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  4. Multiscale solution of the mechanical contact between coated knee prosthesis and bone
 
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2007
Conference Paper
Titel

Multiscale solution of the mechanical contact between coated knee prosthesis and bone

Abstract
A macroscopic mathematical model for bone-prosthesis contact conditions based on asymptotic homogenization is proposed which allows to take into account roughness properties of the prosthesis (in this case a special coating layer) on the micro level. We propose to decouple the macro- and micro-problems. The construction of the macroscopic contact law is done by fitting our various numerical FE-simulations of the contact in the coating layer under considering of some phenomenological models. The model parameters for the macroscopic contact conditions can be calculated in advance and additional iterations between micro-macro levels are not required. Starting with a frictionless micro contact problem with a rough interface one can get the macro-problem containing friction. The proposed macro model is applied to a knee-prosthesis system. The corresponding numerical results will be discussed.
Author(s)
Orlik, Julia
Zemitis, Aivars
Andrä, Heiko
Hauptwerk
Multi-scale Computational Methods for Solids and Fluids. Information Booklet & Book of Abstracts
Konferenz
Thematic Conference on Multi-Scale Computational Methods for Solids and Fluids 2007
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Fraunhofer-Institut fĂ¼r Techno- und Wirtschaftsmathematik ITWM
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