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Passenger Simulation to Determine Safety Limits During Emergency Decelerations
Technical Paper
2002-01-1124
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents a simple passenger dynamics model built to ascertain the minimum safe stopping distance of a Personal Rapid Transit vehicle carrying a seated but unrestrained passenger. The decelerations, under which the passengers would remain in their seats and unharmed, were determined using a simple one degree of freedom mathematical model of a single, seated passenger. The investigation found that the response of passenger depended heavily on their age and sex with an older female passenger being the most easily put in danger. The safe stopping distance had to account for the worst case scenario and the nature of the deceleration profile was crucial with optimum jerk and deceleration rates needing to be determined. These values were found and an “optimum” deceleration profile produced. Initial tests have occurred with encouraging results and development of the model combined with further testing is planned.
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Citation
Featherstone, C., Lieven, N., and Lowson, M., "Passenger Simulation to Determine Safety Limits During Emergency Decelerations," SAE Technical Paper 2002-01-1124, 2002, https://doi.org/10.4271/2002-01-1124.Data Sets - Support Documents
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Also In
Foresight Vehicle Technology: Design, ITS, Safety, Electronics, and Materials
Number: SP-1695; Published: 2002-03-04
Number: SP-1695; Published: 2002-03-04
SAE 2002 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V111-6; Published: 2003-09-15
Number: V111-6; Published: 2003-09-15
References
- Lowson, M. “The ULTra Personal Rapid Transit System.” SAE 2002-01-0174
- Wortman, R.H. Fox, T.C. “An Evaluation of Vehicle Deceleration Profiles.” Journal of Advanced Transportation 28 3 203 215 1994
- Rahimi, A. Hajdu, L.P. Macomber, H.L. “Safety Analysis for Automated Transportation Systems.” Transportation Science 1973. 1971 Joint Automatic Control Conference Operations Research Society of America
- De Graf, B. Van Weperen, W. “Retention of Balance: An exploratory study into the limits of acceleration the human body can withstand without losing equilibrium.” Human Factors 39 1 March 1997 111 118 Human Factors and Ergonomics Society
- Camargo, H.A. “Vehicle Control Performance and Headway in an Automated ground Transportation System.” High Speed Ground Transportation Journal 8 3 1974 Planning Transport Assoc. Inc.
- Vuchic, V.R. “Urban Public Transportation: Systems and Technology.” Prentice-Hall 1981
- Grime, G. “Safety Cars: Principles governing the design of cars and safety devices.” Road Research Laboratory, RRL Report No. 8 1966
- Wolfe, J.A.B. “The Use of Models in Automobile Impact Research.”. from “Towards Safer Road Vehicles” TRRL Report LR 481 1972 116 131
- Silva, M.P.T. Abrosio, J.A.C. Pereira, M.S. “Biomechanical Model with Joint Resistance for Impact Simulation.” Multibody System Dynamics 1 1997 65 84 Kluwer Academic Publishers
- Weaver, J.R. “A Simple Occupant Dynamics Model.” Journal of Biomechanics 1 3 1968 185 Pergammon Press
- Tozern, A. “Human Body Dynamics: Classical Mechanics and Human Movement.” 302 Springer-Verlag 2000
- Deren, M. Obergefell, L.A. Rizer, A.L. “Development of Human Articulating Joint Model Parameters for Crash Dynamics Simulations.” Proceedings of 39 th Stapp Car Crash Conference SAE Nov. 1995 239 250
- Hopkins, R. Gordon, T. “Occupant Kinematics in Impact Tests using Retro-fitted Mathematical Models.”. From “Vehicle and Occupant Kinematics: Simulation and Modelling.” SAE Special Publication No. 985 1993 31 50
- Carmichael, J.R. Von Gierke, H.E. “Biodynamics Applications Regarding Isolation of Humans from Shock and Vibration.” “Isolation of Mechanical Vibration, Impact and Noise.” ASME 1973 246 269
- Wei, L. Griffin, M.J. “Modelling the Effect of Backrest Angle on the Vertical Apparent Mass of Seated Subjects.” 34 th UK Group Meeting on Human Responses to Vibration September 1999
- Huston, R.L. Genaidy, A.M. “Design Parameters for Comfortable and Safe Vehicle Seats.” SAE 1997
- Verriest, J.P. Alozo, F. “Tool for the Assessment of Inter-segmental Angular Relationships defining the Postural Comfort of a Seated Operator.”. From “Passenger Comfort, Convenience and Safety: Test tools and Procedures.” Proceedings - Society of Automotive Engineers 1986 71 93
- Reynolds, H.M. Hubbard, R.P. “Old Problems and New Approaches in Seating Biomechanics”. From “Passenger Comfort, Convenience and Safety: Test tools and Procedures.” Proceedings - Society of Automotive Engineers 1986 35 40
- Carpenter, M.G. Allum, J.H.J. Honegger, F. “Directional sensitivity of stretch reflexes and balance corrections for normal subjects in roll and pitch planes.” Experimental Brain Research 129 1999 93 113
- Runge, C.F. Shupert, C.L. Horak, F.B. Zajac, F.E. “Ankle and hip postural strategies defined by joint torques.” Gait and Posture 10 1999 161 170
- Woollacott, M. Inglin, B. Manchester, D. “Response Preparation and Posture Control: Neuromuscular Changes in the Older Adult.” Annals New York Academy of Sciences
- Gruber, K. Ruder, H. Denoth, J. Scheider, K. “Comparative Study of Impact Dynamics: wobbling mass model versus rigid body models.” Journal of Biomechanics 31 5 May 1998 439 444
- Shultz, A.B. “Mobility Impairment in the Elderly: Challenges for Biomechanics Research.” Journal of Biomechanics 25 5 May 1992 519 528
- Levin, M.F. Dimov, M. “Spatial Zones for Muscle Coactivation and the Control of Postural Stability.” Brain Research 757 1 1997 43 59
- Manchester, D. Woollacott, M. Zederbauer-Hylton, N. Marin, O. “Visual, Vesitbular and Somatosensory Contributions to Balance Control in the Older Adult” Journal of Gerontology 44 118 127
- Wojcik, L.A. Thelen, D.G. Schultz, A.B. Ashton-Miller, J.A. Alexander, N.B. “Age and gender differences in peak lower extremity joint torques and ranges of motion used during single-step balance recovery from a forward fall.” Journal of Biomechanics 34 2001 67 73