Towards a finite element head model used as a head injury predictive tool
Tóm tắt
The aim of this paper concerns the development of a new finite element head model. A particular attention is focused on the representation of the skull/brain interface and the use of hyperelastic material is recommended to represent the cerebro-spinal fluid. The validation of this model is achieved by the comparison of its response with results obtained from cadaver impact tests. A second topic of this paper deals with an original scheme which is to find a correlation between numerical model response and head injuries. An accident reconstruction methodology has been developed. Based on numerical and experimental approaches, dynamic head solicitations generated during the accident are identified. By using these solicitations as input in the head model, interrelationships can be established between finite element head model response and injuries observed on in vivo human victims. Applied here to one accident case, a link can be built between inner brain contusions and “von Mises impulsive stresses”.
Tài liệu tham khảo
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