This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Theoretical Evaluation of the Requirements of the 1999 Advanced Airbag SNPRM – Part One: Design Space Constraint Analysis
Technical Paper
2001-01-0165
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
In the 1999 Supplemental Notice for Proposed Rulemaking (SNPRM) for Advanced Airbags, the National Highway Traffic Safety Administration (NHTSA) sought comments on the maximum speed at which the high-speed, unbelted occupant test suite will be conducted, i.e., 48 kph vs. 40 kph. To help address this question, an analysis of constraints was performed via extensive mathematical modeling of a theoretical restraint system. First, math models (correlated with several existing physical tests) were used to predict the occupant responses associated with 336 different theoretical dual-stage driver airbag designs subjected to six specific Regulated and non-Regulated tests. Second, the pertinent, predicted occupant responses for all 336 designs were compared with a set of generic acceptance criteria for the six distinct performance constraints (where two of the six represented the aforementioned “high-speed” unbelted occupant test suite and where “high-speed” was set equal to either 48 or 40 kph). Finally, statistics were generated to help evaluate the stringency of the various performance constraints.
Results from the assessment for a modeled, prototype, mid-sized passenger car included the following: (1) None of the 336 theoretical dual-stage driver airbag designs satisfied the generic acceptance criteria set when the unbelted rigid fixed barrier testing constraints were run at 48 kph, (2) 21 of the 336 satisfied the generic acceptance criteria set when the unbelted rigid fixed barrier testing constraints were run at 40 kph, and (3) When considering the discarded designs, nearly all of them were predicted to not comply due to (at least one of) the unbelted occupant performance constraints of the generic acceptance criteria set.
Recommended Content
| Technical Paper | Development of a 3-Dimensional Finite Element Model of Air Bag Deployment and Interactions with an Occupant Using DYNA3D |
| Technical Paper | The Airbag-System in the Porsche 944 |
| Technical Paper | Airbag System Applied to Microvans |
Authors
Citation
Laituri, T., Sriram, N., Kachnowski, B., Scheidel, B. et al., "Theoretical Evaluation of the Requirements of the 1999 Advanced Airbag SNPRM – Part One: Design Space Constraint Analysis," SAE Technical Paper 2001-01-0165, 2001, https://doi.org/10.4271/2001-01-0165.Also In
SAE 2001 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V110-6; Published: 2002-09-15
Number: V110-6; Published: 2002-09-15
References
- Bauberger Alfred Schaper Dieter “Belt Pretensioning and Standardized ‘Slack’ Dummy,” 96-S10-W28, 15th International Technical Conference on Enhanced Safety of Vehicles Melbourne, Australia May 1996
- Foret-Bruno, J-Y et al. “Thoracic Injury Risk in Frontal Car Crashes with Occupant Restrained with Belt Load Limiter 42nd Stapp Car Crash Conference Proceedings, Paper 983166 November 1998
- Laituri Tony R. Prasad Priya “Correlation of Driver Inflator Predictor Variables with the Viscous Criterion for the Mid-Sized Male Instrumented Test Dummy in the Chest-on-Module Condition, SAE Paper 1999-01-0763
- Prasad, Priya Laituri Tony R. “Consideration of Belted FMVSS 208 Testing,” 96-S3-O-03, 15th International Technical Conference on Enhanced Safety of Vehicles Melbourne, Australia May 1996
- Van Wylen, Gordon J. Sontag, Richard E. Fundamentals of Classical Thermodynamics John Wiley & Sons 1978
- Wang J.T. Nefske Donald J. “A New CAL3D Airbag Inflation Model,” SAE Paper 880654 1988