Author(s)

A. Guillaume, D. Gaffie, V. Chastres, P. Liebaert & P. Quandieu

Abstract

Numerical and experimental modeling to study the effects of +Gz accelerations on the brain. Preliminary results A. Guillaume, D. Gaffie, V. Chastres, P. Liebaert & P. Quandieu Centre d'Etudes et de Recherches de Medecine Aerospatiale, Base d'Essais en Vol, BP73, 91223, Bretigny/Orge, France ABSTRACT In order to determine the mechanical limits of the acceleration tolerance of the fighter pilots, a mathematical modeling and an experimental study were realized. The model consists in a finite element numerical code which mesh represents the brain. The experimental study analyses the deformations of bovidae encephalons placed in a plexiglass mould during Gz acceleration. The preliminary results indicate the possibility of mechanical effects on the brain induced by load. By coupling the mathematical model and the experimental results, we hope to quantify the stresses exerted inside the cerebral tissue during acceleration. I

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