Author(s)

S. Nicolle, R. Willinger & L. Mourad

Abstract

High frequency modelling of porcine brain tissue S. Nicolle, R. Willinger & L. Mourad IMFS - CNRS 7507, Strasbourg University, France Abstract The objective of this study is to contribute to the improvement of FE head models used to predict the mechanical response of brain during head impact. The topic of that research is the mechanical characterization of high frequency behaviour of porcine brain tissue from own experimental results obtained in small deformation, oscillatory shear experiments. These results are the first experimental data corresponding to a large frequency range associated with nonpenetrating ballistic and accidental impacts or inertial loadings. Cylindrical samples of white matter of adult pigs (diameter: 10 mm, thickness: 150 - 250 pm) are harvested, conserved in physiological solution at 6OC and tested within the day post-mortem. The complex shear modulus of the samples are measured in a custom-designed oscillatory shear testing device at shear strain amplitudes of 0.002 %

Keywords