Modeling of titanium alloys by an identification strategy: Biomechanical application

Modeling of titanium alloys by an identification strategy: Biomechanical application

Rym Harbaoui Amna Znaidi Rachid Nasri 

Laboratoire de mécanique appliquée et ingénierie LR-MAI-ENIT, université Tunis – El Manar, École nationale d’ingénieurs de Tunis, BP 37, Le Belvédère, 1002, Tunis, Tunisie

Institut préparatoire aux études d’ingénieurs d’El Manar, université Tunis – El Manar, BP 244, CP 2092, Tunis, Tunisie

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Titanium, as an attractive material for numerous industries was introduced into engineering practice as a high strength, corrosion resistant material in the last century. More recently, it has found increasing applications in aerospace and transport industry but mostly in the biomedical field. Moreover, titanium alloys were used the total hip prosthesis (PTH) femoral stem because of their biocompatibility and their low Young’s modulus very close to that of the bone. The present work is concerned with the study of the mechanical behavior of the PTH femoral stem made of titanium alloys. To achieve this goal, a modeling study followed by a new identification strategy is presented. Thus, the use of a behavior law, taking into account the microstructural state of titanium (Tia and Tib), is essential in order to provide a reliable model for a future implementation in finite element software. The results obtained from the modeling and from the identification procedure will subsequently be used to study the mechanical behavior of this material when subjected to several stresses.


titanium, behavior law, material identification, anisotropy, titanium, bone prosthesis

1. Introduction
2. Mise en situation : de la mécanique dans le médical
3. Le modèle d’identification
4. Procédure d’identification
5. Résultats et discussion
6. Conclusion

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