Sensitivity of Collision Simulation Results to Initial Assumptions 2012-01-0604
PC-Crash simulations of staged collisions require dozens of parameters describing vehicle and impact parameters. The Collision Optimizer will vary initial speeds and impact parameters to obtain a best fit to a desired end state, but vehicle parameters are left unchanged. The present paper allows these other parameters to vary in thousands of combinations, re-optimizing the solution in each to find the relationships between the previously fixed parameters and the resulting impact speeds. The results show that tire friction and vehicle inertial properties have the most influence on impact speeds. Other parameters have little influence on the results.
Citation: Heinrichs, B., Mac Giolla Ri, B., and Hunter, R., "Sensitivity of Collision Simulation Results to Initial Assumptions," SAE Int. J. Passeng. Cars - Mech. Syst. 5(2):807-832, 2012, https://doi.org/10.4271/2012-01-0604. Download Citation
Author(s):
Bradley Heinrichs, Brian Mac Giolla Ri, Ross Hunter
Affiliated:
MEA Forensic Engineers & Scientists
Pages: 26
Event:
SAE 2012 World Congress & Exhibition
ISSN:
1946-3995
e-ISSN:
1946-4002
Also in:
Accident Reconstruction, 2012-SP-2335, SAE International Journal of Passenger Cars - Mechanical Systems-V121-6, SAE International Journal of Passenger Cars - Mechanical Systems-V121-6EJ
Related Topics:
Tire friction
Tires
Simulation and modeling
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