Mathematical modelisation of side collisions

Steyer, C.; Mack, P.; DuBois, P.; Renault, Regie

Affiliations

Abstract

Numerical simulation can be very useful in the study of side impact both for a better understanding of the structural behaviour and to provide more representative human body characterisations.

In the first part of this paper, a complete structural model using the Finite-Element method and running on a supercomputer simulates the impact of a deformable barrier (C.E.V.E.) on a vehicle. This modelisation takes into account the very complex deformations and interactions inside the structure and between the car and the barrier. The comparison with the experiment is very satisfactory and the model can be considered as validated.

As for the modelisation of the occupant, the recent evaluations of SID and EUROSID dummies in lateral impact showed their poor biofidelity and also their important differences ofconception as regards human being. For those reasons, it is necessary to have recourse directly to the human being. A simple modelisation was developed by the LPB-APR on the basis of cadavert estsa nd integrated in the model of structural deformation described above. Then, the data provided by this model were used with Prakimod to simulate the behaviour of the human being under lateral impact with a given structural deformation.

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Cited By (3)

Year	Entry
1996	Pipkorn B. A mathematical hybrid model for evaluating vehicle performance in car-to-car side impacts. In: Proceedings of the 15th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 13-16, 1996; Melbourne, Australia.704-719.
1991	Steyer C, Najchaus R. Parametric study on the side impact simulation of Renault VSS. In: Proceedings of the 13th International Technical Conference on Experimental Safety Vehicles (ESV). November 4-7, 1991; Paris, France.549-554.
1991	Tsukiji Y, Taga K. A simulation method of vehicle model coupling with dummy in side impact. In: Proceedings of the 13th International Technical Conference on Experimental Safety Vehicles (ESV). November 4-7, 1991; Paris, France.555-560.