Abstract
In this paper optimization techniques together with coupled fluid-structure analysis are used to provide a better understanding of the interaction between the airbag inflation process and an Out Of Position occupant. We provide a concept for, and exemplify how these techniques can be applied to optimize the airbag inflator characteristics in order to minimize occupant injury. For a simplified, but realistic, problem we show that the head acceleration can be reduced by approximately 65 % by optimizing the inlet characteristics.
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This work is funded by Autoliv Research and the Swedish Agency for Innovation Systems (VINNOVA). The authors would like to thank Dr. Bengt Pipkorn, Dr. Yngve Håland and Mr. Claes-Fredrik Lindh at Autoliv Research for help on airbag issues, Dr. John Hallquist for giving us the possibility to use LS-DYNA and Dr. Nielen Stander for helpful discussions on optimization techniques.
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Marklund, PO., Nilsson, L. Optimization of airbag inflation parameters for the minimization of out of position occupant injury. Computational Mechanics 31, 496–504 (2003). https://doi.org/10.1007/s00466-003-0457-9
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DOI: https://doi.org/10.1007/s00466-003-0457-9