A three-dimensional (3D) finite element (FE) human body model validated in many different impact configurations against a large number of biomechanical corridors was used. In order to compare responses, models of Hybrid III and Eurosid 1 dummies were also used .Three typical impact configurations were chosen, both frontal and lateral, using the currently most advanced restraint systems with belt load limiter, pretensioner, knee bolster, frontal and lateral airbags, and pelvis door padding. A comparative study was carried out by varying some of the restraint system parameters. This comparative study highlighted significant differences between both human body and dummy models responses in a vehicle crash environment. The results showed that the human body model is more sensitive than the dummy models to the modification of some restraint system parameters such as the load limiter level or the airbag pressure. It was noticed that the deflection criterion was questionable in some situations. However, the dummy models were able to give reasonable trends in most situations and verified that the currently most advanced restraint systems are well optimized with regard to the current biomechanical knowledge.
Abstract