This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Analysis of Airbag Inflation
Annotation ability available
Sector:
Language:
English
Abstract
The airbag pressure waveform is the basis of the occupant restraint provided by an airbag and greatly influences the level of restraint performance achieved. The characteristics of the gas flowing into and out from the bag were analyzed experimentally and theoretically in order to make clear the factors determining the airbag pressure waveform when the bag was inflated in isolation. The results clarified the mechanism by which different factors affect the bag pressure waveform, including the gas flow characteristics from an inflator into an airbag, gas exhaust characteristics from a bag vent and various bag specifications such as volume. A simple numerical analysis model and an experimental model were prepared to analyze the relationship between the bag pressure waveform and occupant restraint performance. Analyses carried out with these models revealed the relationship between the airbag pressure waveform and deceleration of an impactor corresponding to the occupant. They also clarified the impactor restraint mechanism of the airbag. These results have indicated one direction to take in developing airbag specifications which will reduce impactor (i.e. occupant) deceleration.
Recommended Content
| Technical Paper | Effect of Gas Thermodynamics on the Aggressiveness of Airbag Inflator |
| Technical Paper | Simplification of the Variable Vent Structure of the Passenger Airbag by Applying a Slit-Type Vent |
| Progress In Technology | Advances in Side Airbag Systems |
Authors
Topic
Citation
Omura, H. and Shimamura, M., "Analysis of Airbag Inflation," SAE Technical Paper 890192, 1989, https://doi.org/10.4271/890192.Also In
References
- Irish F. J. Potter R. A. McKenzie R. D. “Modeling Tools for Design of Air Cushion Restraint Systems” SAE 710015 1971
- Johnson J. T. McComb R. E. McDonnell T. F. Trowbridge D. R. “Energy Source Selection for Inflatable Occupant Restraint System” SAE 710017 1971
- Hammond R. A. “Digital Simulation of an Inflatable Safety Restraint” SAE 710019 1971
- King Albert I. Chou Clifford C. Mackinder James A. “Mathematical Model of an Airbag for a Three-Dimensional Occupant Simulation” SAE 720036 1972
- Hamilton B. K. Young Craig Talley Claude P. Chakravarti K. Finlow David E. Wright William H. “Gas Cushion Systems Analysis Occupant-Cushion Interactions” SAE 720415
- Lane George A. Dergazarian Thomas E. Staudacher Gerald R. “Compact, All-Solid Gas Generators” SAE 720417 1972
- Wu Hai Tang Sing C. Petrof Robert C. “Interaction Dynamics of an Inflating Air Bag and a Standing Child” SAE 730604 1973
- Wang J. T. Nefske Donald J. “A New CAL3D Airbag Inflation Model” SAE 880654 1988
- Horsch John D. Culver Clyde C. “A Study of Driver Interactions with an Inflating Air Cushion” SAE 791029 1979
- Bowman B. M. Bennett R. O. Robbins D. H. “MVMA Two-Dimensional Crash Victim Simulation, Version 4” 1979