Anisotropic and hyperelastic identification of in vitro human arteries from full-field optical measurements

Stéphane Avril (1, 2, 3, 4) , Pierre Badel (1, 2, 3, 4) , Ambroise Duprey (1, 2, 3, 4, 5, 6)

1 DB2M-ENSMSE - Département Biomécanique et Biomatériaux
2 CIS-ENSMSE - Centre Ingénierie et Santé
3 PECM-ENSMSE - Plasticité, Endommagement et Corrosion des Matériaux
4 IFRESIS - Institut Fédératif de Recherche en Sciences et Ingénierie de la Santé
5 VML - Vascular Mechanics Laboratory
6 DCC - Département de Chirurgie Cardiovasculaire

In this paper, we present a new approach for the bi-axial characterization of in vitro human arteries and we prove its feasibility on an example. The specificity of the approach is that it can handle heterogeneous strain and stress distributions in arterial segments. From the full-field experimental data obtained in inflation/extension tests, an inverse approach, called the virtual fields method (VFM), is used for deriving the material parameters of the tested arterial segment. The obtained results are promising and the approach can effectively provide relevant values for the anisotropic hyperelastic properties of the tested sample.

Mots clés: Vascular mechanics; Identification; Hyperelasticity; Anisotropy; Artery

Domaines: Génie des procédés; Matériaux; Biochimie, Biologie Moléculaire

Stéphane Avril, Pierre Badel, Ambroise Duprey. Anisotropic and hyperelastic identification of in vitro human arteries from full-field optical measurements. Journal of Biomechanics, 2010, 43 (15), pp.2978-2985. ⟨10.1016/j.jbiomech.2010.07.004⟩. ⟨hal-00543316⟩