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Characteristics of Specific Automobile Bumpers in Low-Velocity Impacts
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English
Abstract
There are many bumper-to-bumper automobile collisions in which a vehicle occupant claims injury but where there is little or no outward damage to the vehicles. On vehicles equipped with shock-absorber-type bumper isolators, the only “damage” often consists of compression marks left on the isolator piston tube and scuffs on the bumper.
This paper examines the behavior of specific automobile bumpers in aligned low-velocity collisions. Specifically, empirical data gathered during numerous (currently 660) vehicle-to-vehicle and vehicle-to-barrier collisions are presented and relationships between isolator compression and vehicle impact severity are developed. General trends among all types of isolators and trends specific to vehicle manufacturers are identified and discussed. Damage threshold data are also presented.
The effects of additional vehicle mass, braking during the collision, and large differences between the amount of compression on the left and right bumper isolators are explored. Vehicle motions analogous to rear-end impacts are discussed and new data from tests using human volunteers in low-velocity rear-end collisions are presented.
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Citation
Siegmund, G., Bailey, M., and King, D., "Characteristics of Specific Automobile Bumpers in Low-Velocity Impacts," SAE Technical Paper 940916, 1994, https://doi.org/10.4271/940916.Also In
References
- Bailey, M.N. King, D.J. Romilly, D.P. Thomson, R. “Characterization of Automotive Bumper Components for Low Speed Impacts” Proceedings of the Canadian Multidisciplinary Road Safety Conference VII June 1991 Vancouver, BC.
- King, David J. Siegmund, Gunter P. Bailey, Mark N. “Automobile Bumper Behavior in Low-Speed Impacts” SAE 930211
- Severy, D.M. et al “Controlled Automobile Rear-End Collisions, An Investigation of Related Engineering and Medical Phenomena” Canadian Services Medical Journal
- Thomson, R. “An Investigation Into Low Speed Rear Impacts of Automobiles” University of British Columbia 1990
- Navin, F.P.D. Macnabb, M.J. Romilly, D.P. Thomson, R.W. “An Investigation into Vehicle and Occupant Response Subjected to Low-Speed Rear Impacts” Canadian Multidisciplinary Road Safety Conference VI 1989
- Kerkhoff, J. Varat, M. Buenga, A. Hamilton, K. Husher, S. “An Investigation Into Vehicle Frontal Impact Stiffness, BEV, and Repeated Testing for Reconstruction” SAE 930899
- Szabo, T. Welcher, J. “Dynamics of Low Speed Crash Tests with Energy Absorbing Bumpers” SAE 921573
- McConnell, Whitman E. et al. “Analysis of Human Test Subject Kinematic Responses to Low Velocity Rear End Impacts” SAE 930889
- Siegmund, Gunter P. Williamson, Peter B. “Speed Change (ΔV) of Amusement Park Bumper Cars” Canadian Multidisciplinary Road Safety Conference VIII 1993
- West, H. Gough, J. Harper, T. “Low Speed Rear-End Collision Testing Using Human Subjects” Accident Reconstruction Journal June 1993
- Mertz, H. Patrick, L. “Investigation of the Kinematics and Kinetics of Whiplash” SAE 670919