Modeling of articular cartilage replacement materials

• Autorzy: Stoffel M. , Weichert D. , Muller-Rath R.
• Języki publikacji: EN

Abstrakty

EN

The development of replacement material for human articular cartilage exhibiting similar mechanical properties as the native tissue is a problem of high actuality in biomeclicine. In the present work a new condensed collagen material is investigated. The study aims at developing a mechanical model especially adapted to this particular collagen material. For this purpose, a viscoelastic-diffusion (VED) model is proposed, accounting for two different diffusion evolutions assumed. Moreover, the need for a gradient material description is discussed in order to cover fabrication influences leading to a variable Young's modulus for the material. On this background, a phe-nornenological law is presented to predict deformation-dependent diffusion behavior and internal reaction forces. Furthermore, the present approach allows a practible identification of diffusion parameters. The theoretical model is implemented into a finite element code and parameters are identified by tension tests. The simulation results are validated experimentally.

Słowa kluczowe

EN

diffusion model; viscoelasticity; material testing; finite element simulation

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2009
• Tom: Vol. 61, nr 1
• Strony: 69--87
• Opis fizyczny: Bibliogr. 37 poz.

Twórcy

autor

Stoffel M.

autor

Weichert D.

autor

Muller-Rath R.

• Institute of General Mechanics RWTH Aachen, Germany,

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