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Improvement of Robustness of Vehicle Crashworthiness Relative to the Impact Angle
Technical Paper
2004-01-1611
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Improving the robustness of vehicle crashworthiness in relation to the impact angle may be quite important in enhancing vehicle safety under actual driving conditions. This importance can also be inferred from the fact that almost all of the accidents classified as frontal crashes in real-world driving have an impact angle. The first step of this research was to make clear the differences between inline offset impacts and oblique offset impacts, focusing on the behavior of the vehicle. Based on the results obtained, a feasibility study for improving the robustness of vehicle crashworthiness relative to the impact angle in frontal collisions was carried out. In order to analyze vehicle behavior and examine ways of improving robustness, oblique offset car-to-car (CTC) impact tests were conducted and simulations were run using finite element (FE) models. The method of evaluating vehicle body strength that was reported by Kitagawa et al. [7] was utilized to process the data. It was confirmed that this method yields useful results and that it can also be applied to oblique offset impacts. The results of the behavior analysis showed that the load paths and vehicle dynamic behavior differed substantially between inline offset impacts and oblique offset impacts. It was also found that a larger impact angle caused the load paths and vehicle dynamic behavior to change and that such changes were factors that contributed to greater or lesser body deformation; the extent of influence of each factor was observed to change as a result of changes in the impact angle. As a result of the feasibility study, it was confirmed that modification of the load paths of the front-end structure may improve the robustness of vehicle crashworthiness in relation to the impact angle.
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Authors
Citation
Saeki, H., Maki, T., Miyasaka, H., and Ueda, M., "Improvement of Robustness of Vehicle Crashworthiness Relative to the Impact Angle," SAE Technical Paper 2004-01-1611, 2004, https://doi.org/10.4271/2004-01-1611.Also In
Vehicle Aggressivity and Compatibility, Structural Crashworthiness, and Pedestrian Safety
Number: SP-1878; Published: 2004-03-08
Number: SP-1878; Published: 2004-03-08
References
- Stucki S. L. Ragland C. Hennessey L.P. Hollowell W. T. “NHTSA's Improved Frontal Protection Research Program” Society of Automotive Engineers 950497 279 291 1995
- Stucki S. L. Hollowell W. T. “NHTSA's Improved Frontal Protection Research Program” International Technical Conference on the Enhanced Safety of Vehicles Paper Number 96-S1-O-09 May 1996
- Ragland C. “Offset Test Procedure Development and Comparison” International Technical Conference on the Enhanced Safety of Vehicles Paper Number 98-S1-03 June 1998
- Ragland C. Osvaldo F. Daniel E. “Evaluation of Frontal Offset/Oblique Crash Test Conditions” International Technical Conference on the Enhanced Safety of Vehicles Paper Number 385 June 2001
- Ragland C. “Evaluation of Crash Types Associated with Test Protocols” International Technical Conference on the Enhanced Safety of Vehicles Paper Number 399 June 2003
- Sugimoto T. Kadotani Y. Ohmura S. “The Offset Crash Test-A Comparative Analysis of Test Methods” International Technical Conference on the Enhanced Safety of Vehicles Paper Number 98-S1-08 June 1998
- Kitagawa Y. Makita M. Pal C. “Evaluation and Research of Vehicle Body Stiffness and Strength for Car to Car Compatibility” Society of Automotive Engineers 2003-01-0908 93 99 2003