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Development of a Two-Dimensional Driver Side Airbag Deployment Algorithm
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Sector:
Event:
Stapp Car Crash Conference
Language:
English
Abstract
A PC based interactive program was developed to simulate the unfolding and deploying process of a driver side airbag in the sagittal plane. The airbag was represented by a series of nodes. The maximum allowable stretch was less or equal to one between any two nodes. We assumed that the airbag unfolding was pivoted about folded points. After the completion of the unfolding process the airbag would begin to deploy. During the deploying process, two parameters were used to determine the nodal priority of the inflation. The first parameter was the distance between the instantaneous and final positions of a node. Nodes with longer distances to travel will have to move faster. We also considered the distance between the current nodal position and the gas inlet location. For a node closer to the gas inlet, we assumed that the deploying speed was faster. A graphical procedure was used to calculate the area of the airbag. At each time step, this area was checked against four convergence criteria set up by the user, using an iterative procedure.
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Authors
Citation
Yang, K., Wang, H., Wang, H., and King, A., "Development of a Two-Dimensional Driver Side Airbag Deployment Algorithm," SAE Technical Paper 902323, 1990, https://doi.org/10.4271/902323.Also In
References
- Chou, C.C. and Wyman, M. H. (1989) “A Driver Air Bag Simulation Study”, in 50th Anniversary Symposium Proceedings, Bioengineering Center, Wayne State University, pp. 67-75.
- Fleck, J.T. (1981) “Validation of the Crash Victim Simulator, Volumes I through IV”, DOT Report No. DOT-HS-806 279, December 1981.
- Hoffmann, R., Pickett, A.K., Ulrich, D., Haug, E., Lasry, D. and Clinkemaillie, J. (1989) “A Finite Element Approach to Occupant Simulation: The PAM-CRASH Airbag Model” SAE publication Sp-782, pp. 79-88, SAE paper no. 890754.
- Latouf, B., Yang, K.H. and King, A. I. (1989) “CAL3D Simulation of Occupant Neck Response to Airbag Deployment in Frontal Impacts, 50th Anniversary Symposium Proceedings, Bioengineering Center, Wayne State University. Nov. 10, 1989.
- Prasad, P. and Chou, C.C. (1989) “A Review of Mathematical Occupant Simulation Models” in Crashworthiness and Occupant Protection in Transportation Systems, Khalil, T.B. and King, A.I. (eds.) ASME, pp. 95- 112. New York.
- Schnieder, L.W., Robbins, D.H., Pflug, M.A. and Snyder, R.G. (1983) “Development of Anthropometrically Based Design Specifications for an Advanced Adult Anthropomorphic Dummy Family, Volume I”, DOT Final Report.
- Wang, J.T. and Lin, K.H. (1988) “A CAL3D Steering System Impact Model” SAE paper No. 880650.
- Wang, J.T. and Nefske, D.J. (1988) “A New CAL3D Airbag Inflation Model” SAE Paper No. 880654.
- Wang, J.T. (1990) “Recent Advances in Modeling of Pyrotechnic Inflators for Inflatable Restraint Systems” in Crashworthiness and Occupant Protection in Transportation Systems, Khalil, T.B. and King, A.I. (eds.) ASME, pp. 89-93. New York.
- Wang, J.T. and Ngo, T. (1990) “Modeling of Passenger Side Airbags with Complex Shape” SAE paper No. 900545, in Vehicle Crashworthiness and Occupant Protection in Frontal Collisions, SAE Publication SP-807, pp. 117-123.