Energy and Entropy in Airbag Deployment: The Effect on an Out-Of-Position Occupant 1999-01-1071
Deployment of an airbag or charging of a tank by an inflator-canister system is a highly dynamic process. Quantification of energy storage, energy flux, work done, flow rates, thermodynamic properties, and energy conservation are essential to describe the deployment process. The concepts of available work and entropy production are presented as useful parameters when evaluating airbag aggressivity from tank test results for different types of inflators. This paper presents a computational methodology to simulate a pyro- and a hybrid-inflator-canister-airbag system to predict the force pattern that could occur on an out-of-position occupant when the airbag deploys. Comparisons with experimental data have been made in all cases where data were available. These include driver-, passenger-, and side-airbag designs.
Citation: Nusholtz, G., Wu, J., Wang, D., and Wylie, E., "Energy and Entropy in Airbag Deployment: The Effect on an Out-Of-Position Occupant," SAE Technical Paper 1999-01-1071, 1999, https://doi.org/10.4271/1999-01-1071. Download Citation
Author(s):
G. S. Nusholtz, J. Wu, D. Wang, E. B. Wylie
Affiliated:
Daimler-Chrysler Tech Center, Hohai University, China, University of Michigan
Pages: 15
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Airbag Technology 1999-SP-1411, SAE 1999 Transactions - Journal of Passenger Cars-V108-6
Related Topics:
Airbag systems
Energy conservation
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