Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux

Type de document

COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)

Langue

anglais

Auteur

CONTE ; MASSON ; CHEYNEL ; ARNOUX

Résumé / Abstract

Thoracic and abdominal organs are highly injured during crash situations leading to severe traumas with high morbidity. To prevent this, the definition of efficient safety devices should be based on a detailed knowledge of injury mechanisms and related injury criteria. In this sense, FE simulation coupled to experiment could be a valuable tool to provide a better understanding of internal organs behaviour. This preliminary study aims to improve FE model focussing on liver mechanical behaviour. It concerns the identification of structure mechanical properties up to the evaluation of damage occurrence. This work intends to build a methodology to implement the liver behaviour in a FEM that is robust enough to describe the biological, intrinsic and experimental variability. It is based on an ongoing experimental characterisation of the liver under quasi-static compression. A first set of model parameters, relevant with the sub injury level was first obtained. Then, the damage evaluation was performed through Von Mises levels analysis by comparison to the experimental tests including necropsies and histological structure analysis. Results highlights that damage was centred in the middle part of the right lobe. This let us complete understanding on injury mechanisms and clinical data of liver traumas. Liver, FE simulation, inverse analysis, damage evaluation

Editeur

Cranfield University ; University of the Méditerrannée ; INRETS