Simple 3D passenger airbags are able to prevent the passenger-side occupant from experiencing high injury loads during head-on collisions. This study demonstrates that both airbag concepts have an overall similar restraint performance, which was confirmed by performing validated numerical simulations and conducting sled tests with the multi-surface airbag. However, the multi-body simulation of the multi-surface passenger airbag showed that there is a potential increase in restraint performance for the HIII 5% dummy under unbelted conditions. Neck loads described by the normalized neck injury value can be reduced significantly. Reasons for this potential restraint improvement are, on one hand, the wide support of the upper torso and head during the intrusion of the dummy into the airbag cushion and, on the other hand, the lateral stabilisation of the dummy head by the two dents. In addition to numerical development tools with dedicated software, and empirical development tools such as crash and sled tests, the simulation with human models complements the development process by allowing a better understanding of the protection mechanism of a restraint device. It also complements the information that is derived from a frontal dummy, making it possible to get data about loads in bones. The numerical simulations with the human body model THUMS were also useful in gaining a better understanding of the detailed protection mechanism of the multi-surface airbag. It was observed that local stress on the thorax could be reduced by a multi-surface design,
Potential passenger restraint system improvement by the application of a multi-surface airbag
Potenzial zur Verbesserung von Insassenrückhaltesystemen durch Verwendung eines Mehrflächen-Airbags
2006
17 Seiten, 22 Bilder, 10 Quellen
Aufsatz (Konferenz)
Englisch
Potential passenger restraint system improvement by the application of a multi-surface airbag
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