This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
VEHICLE-TO-VEHICLE FULL FRONTAL CRASH OPTIMIZATION USING A CAE-BASED METHODOLOGY
Technical Paper
2003-06-0153
Annotation ability available
Sector:
Language:
English
Abstract
This paper describes a CAE-based methodology used to identity major factors influencing vehicle structural performance and crash energy management in full-frontal vehicle-to-vehicle collisions. Finite element models of an “average” SUV and an “average” full-size passenger vehicle were used in this study. The determining factors of vehicle compatibility in multi-vehicle collisions are relative mass, relative stiffness and relative geometry. Four parameters of the average SUV, mass, fore rail length, fore rail thickness, and fore rail height were selected as design variables. A uniformly spaced Optimal Latin Hypercube sampling technique was employed to probe the design space of these variables using thirteen simulation runs.
Dash intrusions in the passenger vehicle and the absorbed collision energy in both vehicles were selected as response variables. Polynomial response surfaces were constructed, based on the simulation results, and found to fit the results well (R2= 0.98 for dash intrusion and R2= 0.85 for absorbed energy). As a result, prediction equations for maximum dash intrusion and absorbed collision energy as a function of the vehicle design variables were obtained. Results indicated that aligning front-end structures (specifically fore rail heights between impacted vehicles) in vehicle-to-vehicle full-frontal collisions has greater effect on reducing dash intrusions and managing crash energy than mass and variables associated with stiffness. An optimal design solution could also be determined with the appropriate introduction of constraint conditions.
Recommended Content
Technical Paper | Airbag Modeling Using Initial Metric Methodology |
Technical Paper | Automated Performance Evaluation of a Vehicle’s Space-Frame Design Parametric Model |
Technical Paper | Linkage Design Using the LINCAGES © Package |
Authors
Topic
Citation
Barbat, S., Li, X., Przybylo, P., and Prasad, P., "VEHICLE-TO-VEHICLE FULL FRONTAL CRASH OPTIMIZATION USING A CAE-BASED METHODOLOGY," SAE Technical Paper 2003-06-0153, 2003.Also In
References
- Gabler, H.C. Hollowell W.T. “The Aggressivity of Light Trucks and Vans in Traffic Crashes” SAE Paper No. 980908 1998
- Evans, L. Frick, M.C. “Mass Ratio and Relative Driver Fatality Risk in Two-Vehicle Crashes” Accident Analysis and Prevention Volume 25 213 214 1993
- Evans, L. “Driver Injury and Fatality Risk in Two-Car Crashes versus Mass Ratio Inferred Using Newtonian Mechanics” Accident Analysis and Prevention Volume 26 No. 5 609 616 1994
- Mizuno, K. Kajzer, J. “The Compatibility of Mini Cars in Traffic Accidents” 16 th ESV Conf, Paper No. 98-S3-O-08 Windsor, Canada 1998
- Barbat, S. Li, and X. Prasad, P. “A Comparative Analysis of Vehicle-to-Vehicle and Vehicle-to-Rigid Fixed Barrier Frontal Impacts” 17 th ESV Conf, Paper No. 01-S7-O-01 Amsterdam, Netherlands 2001
- Barbat, S. Li X. Prasad, P. “Evaluation of Vehicle Compatibility in Various Frontal Impact Configurations” 17 th ESV Conf, Paper No. 01-S7- O-09 Amsterdam, Netherlands 2001
- Steyer, C. Delhommeau, M. Delannoy, P. “Proposal to Improve Compatibility in Head on Collision” 16 th ESV Conf, Paper No. 98-S3-O-05 Windsor, Canada 1998
- Brown, G. Arvelo E. Strong, A. “Investigation of the Major Factor Influencing Front Compatibility Design of Vehicles” SAE Paper No. 2001-01-1166 2001
- RADIOSS Crash Guidelines Mecalog SARL 1997
- Yang, R.J. Akkerman, A. Anderson, D.F. Faruque, and O.M. Gu, L. “Robustness Optimization for Vehicular Crash Simulations” Computing in Science and Engineering 8 13 Nov./Dec. 2000
- Gu, L. “A Comparison of Polynomial-based Regression Models in Vehicle Safety Analysis” ASME 2001 DETC, Paper No. DAC-21063 Pittsburgh 2001