ROLLOVER: A METHODOLOGY FOR RESTRAINT SYSTEM DEVELOPMENT
Published June 04, 2001 by National Highway Traffic Safety Administration in United States
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Concern about crash conditions other than frontal and side crashes has accelerated restraint development with respect to rollover events. Previous analysis of rollover field data indicates the high probability of ejection and consequent serious injury or death to unbelted occupants. Partial ejection of belted occupants may also occur. Restraint development has focused on belt technologies and more recently, airbag systems as a method to reduce ejection and injury risk. Effective restraint development for these emerging technologies should consider a combined approach of field injury data analysis, computer simulation of rollover, corresponding validated test data and hardware development techniques.
First, crash data was analyzed for identified rollover modes (crash sequences) and injured body regions. This helped to determine possible restraint interventions. Computer models using a combined finite element and multibody approach were created, representing the vehicle and occupant kinematics observed in the rollover modes that were tested. After validating the occupant kinematics, models of an inflatable curtain bag were placed in the baseline model to evaluate the benefits of such a restraint system to both belted and unbelted occupants. Based on these results, a methodology was developed that allowed the curtain hardware to be developed based on a simple linear impact test. The development parameters include the curtain chamber layout, pressure requirements, and anti-ejection capabilities of the restraint system. Results from all data analysis, modeling and tests will be discussed in this paper.
The overall approach has basis in biomechanical tolerance and defines the necessary requirements and subsequent restraint solutions for improved occupant protection in a contemporary crash issue.
CitationRidella, S., Nayef, A., and Altamore, P., "ROLLOVER: A METHODOLOGY FOR RESTRAINT SYSTEM DEVELOPMENT," SAE Technical Paper 2001-06-0217, 2001.
- Huelke, D.F, Marsh, J.C., Dimento, L, Sherman, H., Ballard, W.J. (1973). Injury Causation in Rollover Accidents. In : Proceedings of the 17th Conference of the American Association of Automotive Medicine, pp. 87–115.
- Hight, P.V, Siegel, A.W. Nahum A.M. (1972). Injury Mechanisms in Rollover Collisions. In : Proceedings of the Sixteenth Stapp Car Crash Conference, pp. 204–225. SAE Paper No. 720966. Warrendale, PA.
- Huelke, D.F., lawson, T.E, and Marsh, J.C. (1976). Injuries and Vehicle Factors in Rollover Car Crashes. Accident Analysis and Prevention, Vol. 9, No. 2-B, pp. 93–107.
- Huelke, D.F. and Compton, C.P. (1983). Injury Frequency and Severity in Rollover Car Crashes as related to Occupant Ejections, Contacts and Roof damage. Accident Analysis and Prevention Vol. 15, No. 5, pp. 398–401.
- Mackay, G.M., Parkin, S, Morris, A.P., and Brown, R.N. (1993). The Urban Rollover: Characteristics, Injuries, Seat Belts, and Ejection. In: Proceedings of the 13th International Technical Conference on Experimental Safety Vehicles., Washington, D.C., Paper No. S6-O-08, pp. 741–747.
- Digges, K.H., Malliaris, A.C. and DeBlois H.J. (1993) Rollover Injury Causation and Reduction. In Proceedings of the 26th International Symposium on Automotive technology and Automation, pp. 681–685.
- Parenteau, C.S. and Shah, M. (2000) Driver Injuries in US Single-Event Rollovers. In: Side Impact Collision research, SP-1518, pp. 1–8, SAE Paper No. 2000-01-0633, Warrendale, PA.
- McKibben, J.S., Clark, G.S. and Carlson L.E. (1974). Development of Techniques to Prevent Occupant Ejection During Rollover – Volume 1 – Executive Summary, DOT HS 801–122, 54pp.
- Sakurai, T. Takigawa, Y, and Ikeno, H. (1993). Study of Passenger Car Rollover Simulation. In Proceedings of the 13th International Technical Conference on Experimental Safety Vehicles., Washington, D.C., Paper No. S6-O-10, pp. 747–753.
- Johnson, A.K. and Knapton, D.A. (1984). Occupant Motion During a Rollover Crash. DOT Report No., DOT HS 806 646, 10pp.
- Pywell, J.F., Rouhana, S.W, McCeleary, J.D., and deSaele, K.H. Characterization of Belt Restraint Systems in Quasistatic Vehicle Rollover tests. In: Proceedings of the 41st Stapp Car Crash Conference, pp. 265–276, SAE Paper No. 973334, Warrendale, PA.
- Arndt, M.W. Testing for Occupant Rollover Protection (1998). In: Advances in Safety technology, pp. 27–32, SP-1321. SAE Paper No. 980213, Warrendale, PA.
- Moffatt, E.A, Cooper E.R., Croteau, J.J., Parenteau, C, and Toglia, A. (1997). Head Excursion of Seat Belted Cadaver, Volunteers, and Hybrid III ATD in a Dynamic/Static Rollover Fixture. In: Proceedings of the 41st Stapp Car Crash Conference, pp. 509–523., SAE Paper No. 973347, Warrendale, PA.
- Day, T.D. and Garvey J.T. (2000). Applications and Limitations of 3-Dimensional Vehicle rollover Simulation. In: Accident Reconstruction: Analysis, Simulation, and Visualization, pp. 423–436. SAE Paper No. 2000-01-0852, Warrendale, PA.
- Chace, M.A. and Wielenga, T.J. (1999). A Test and Simulation Process to Improve Rollover Resistance. In: Vehicle Dynamics and Simulation, pp. 115–127, SP-1445, SAE Paper No. 1999-01-0125, Warrendale, PA.
- Robbins, D.H and Viano, D.C. (1984). MVMA 2-D Modeling of Occupant Kinematics in Rollovers. In: Mathematical Simulation of Occupant and Vehicle Kinematics, pp.65–77, SAE Paper No. 840860, Warrendale, PA.
- Obergefell, L.A., Kaleps, I., and Johnson, A.K. (1986). Prediction of Occupant’s Motion During Rollover. In: Proceedings of the 30th Stapp Car Crash Conference, pp. 13–26, SAE Paper No. 861876, Warrendale, PA.
- Cheng, H., Rizer, A.L., and Obergefell, L.A. (1995). ATB Model Simulation of a Rollover Accident with Occupant Ejection. In: Accident Reconstruction: Technology and Animation V., pp. 21–31., SAE Paper No. 950134, Warrendale, PA.
- Ma, D., Rizer A.L., and Obergefell, L.A. (1995). Dynamic Modeling and Rollover Simulations for Evaluation of Vehicle Glazing Materials. SAE International Congress and Exposition, pp. 1–11, SAE Paper No. 950050, Warrendale, PA.
- Renfroe, D.A., Partain J.F. and Lafferty J. (1998). Modeling of vehicle rollover and evaluation of occupant injury potential using MADYMO. In: Accident Reconstruction: Technology and Animation VIII., pp. 33–50., SAE Paper No. 980021, Warrendale, PA.
- Renfroe, D.A. and Partain, J.F. (2000). Modeling of Occupant Impacts during Rollover conditions. . In: Accident Reconstruction: Analysis, Simulation, and Visualization, pp. 451–459. SAE Paper No. 2000-01-0854, Warrendale, PA.
- Bardini, R. and Hiller, M. (1999). The contribution of occupant and vehicle dynamics simulation to testing occupant safety in passenger cars during rollover. In : Safety Test Methodology, pp. 41–49, SP-1434, SAE Paper No. 1999-01-0431, Warrendale, Pa.
- MADYMO Users Manual, Version 5.4, TNO Automotive, Delft, The Netherlands, 2000.
- Digges, K. and Malliaris, A.C. (1998). Crashworthiness Safety Features in Rollover crashes. SAE paper No.982296, pp. 35–39, Warrendale, PA.
- James, M.B., Allsop, D.L., Nordhagen, R.P., and Decker, R.L. Injury Mechanisms and Field Accident Data Analysis in Rollover Accidents. In: Occupant Protection and Injury Assessment in the Automotive Crash Environment, SP-1231, pp. 213–223, SAE Paper No. 970396, Warrendale, Pa.
- NHTSA (1996). Computer Modeling of Rollover Accidents. National Highway Traffic Safety Administration Public Meeting for Advanced Glazing Research.
- Happee, R., Hoofman, M., Kroonenberg van den, A.J., Morssink, P. and Wismans, J. (1998). A Mathematical Human Model for Frontal and Rearward Seated Automotive Impact Loading. In Proceedings of the 42nd Stapp Car Crash Conference, P-337, pp. 75–88, SAE Paper No. 983150, Warrendale, Pa.