Concept of hood design for possible reduction in pedestrian head injury

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Okamoto, Yutaka¹; Akiyama, Akihiko¹; Nagatomi, Kaoru¹; Tsuruga, Takahiro¹

Concept of hood design for possible reduction in pedestrian head injury

Proceedings of the 14th International Technical Conference on the Enhanced Safety of Vehicles (ESV)

Affiliations

¹HONDA R&D Co., Ltd. JAPAN
Abstract

Our report in the 13th ESV conference described the effect of the geometric shape and the force-deformation (F-S) characteristics of the frontal vehicle body on the head colliding speed with hood.

This paper presents the result of a research on rigidity characteristics of the body which might help reduce head injuries and on the specific structures designed to meet these requirements.

The possible F-S characteristics of the hood which makes the severity of head injuries no more than HIC 1000 was first investigated. Then, candidate structures that might realize such F-S characteristics were studied using laboratory impact tests and computer simulations.

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Cited By (11)

Year	Entry
1994	EEVC Working Group 10 Report: Proposals for Methods to Evaluate Pedestrian Protection for Passenger Cars. European Enhanced Vehicle-Safety Committee (EEVC); November 1994.
2005	Ivarsson BJ, Henary B, Crandall JR, Longhitano D. Significance of adult pedestrian torso injury. In: 49th Annual Proceedings, Association for the Advancement of Automotive Medicine (AAAM). September 12-14, 2005; Boston, MA.263-277.
1996	Janssen EG; EEVC WG10. EEVC test methods to evaluate pedestrian protection afforded by passengers cars. In: Proceedings of the 15th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 13-16, 1996; Melbourne, Australia.1212-1225.
2001	Bosma F, Gaalman HAE, Souren WHM. Closure and trim design for pedestrian impact. In: Proceedings of the 17th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 4-7, 2001; Amsterdam, The Netherlands.
2003	Maki T, Asai T, Kajzer J. Development of future pedestrian protection technologies. In: Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 19-22, 2003; Nagoya, Japan.
2003	Boggess BM, Wong J, Mark S. Development of plastic components for pedestrian head injury risk reduction. In: Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 19-22, 2003; Nagoya, Japan.
2005	Kerkeling C, Schäfer J, Thompson G-M. Structural hood and hinge concepts for pedestrian protection. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.
2005	Longhitano D, Burke C, Bean J, Watts D, Fakhry S, Meissner M, Ivarsson J, Sherwood C, Crandall J, Takahashi Y, Kadotani Y, Hitchcock R, Kinoshita Y. Application of the CIREN methodology to the study of pedestrian crash injuries. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.
2017	Ito O, Sasaki K. Research of aluminum hood construction for pedestrian protection by optimization CAE. In: Proceedings of the 25th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 5-8, 2017; Detroit, MI.
2007	Fredriksson R, Zhang L, Boström O, Yang K. Influence of impact speed on head and brain injury outcome in vulnerable road user impacts to the car hood. Stapp Car Crash J. 2007;51:155-167. SAE 2007-22-0007.
2007	Untaroiu CD, Shin J, Crandall JR. A design optimization approach of vehicle hood for pedestrian protection. Int J Crashworthiness. 2007;12(6):581-589.