Abstract:

For the protection of the 6-year-old child occupant of the school bus， based on the original school bus active airbag model， a one-piece active airbag model is established to improve the protection effect on the children with biased position. Based on MADYMO， the school bus occupant restraint system is established， and the validity of the one-piece airbag is simulated and the single factor analysis of the airbag parameters is carried out. According to the five sensitive factors， a series of parameters of the one-piece airbag are optimized by orthogonal test. The simulation optimization results show that the evaluation index of complete injury of the children in biased position after the optimization is reduced by 35.1% compared with the single-type airbag. The injury index for double and single occupancy increases by 8.5% and 13.1% but the value is still much smaller than the specification limit. This further improves the protection performance for children in a biased position in the case that the normal ride protection meets the standard.

Key words: school bus, occupant restraint system, one-piece airbag, injury prevention