| Popis: |
There is an increasing pressure to reduce injuries and fatalities by effectively using airbags for side impact and out-of-position impact loading conditions. Numerical simulation, as an essential design tool for airbags, requires accuate models applicable to the various OOP loading cases. In this paper a strategy for defining such models together with a set of experiments for model calibration is proposed. Starting with an unfolded model of the bag, the complexity is gradually increased towards a real OOP model with dummy included. The use of the MADYMO/Gasflow module contributed to improved correlation between simulations and experiments in case of the unfolded airbag model. Besides the simulation of OOP situations this paper is focused on state of the art simulation techniques and experimental test methods. For validation and calibration purposes a new high-speed infrared technique is introduced that measures the airbag fabric temperature during deployment. |
