Development of a biofidelic flexible pedestrian legform impactor type GT (Flex-GT)

wbldb

Konosu, Atsuhiro¹; Issiki, Takahiro¹; Tanahashi, Masaaki²; Suzuki, Hideki²

Development of a biofidelic flexible pedestrian legform impactor type GT (Flex-GT)

Proceedings of the 20th International Technical Conference on the Enhanced Safety of Vehicles (ESV)

Affiliations

¹Japan Automobile Research Institute

²Japan Automobile Manufacturers Association, Inc., Japan
Abstract

The Japan Automobile Research Institute and the Japan Automobile Manufacturers Association, Inc., have been developing a biofidelic flexible pedestrian legform impactor (Flex-PLI) since 2002, and its the latest version is called Flex-GT, and its prototype (Flex-GT-prototype) is developed in 2006. However, the Flex-GT-prototype is required further evaluation study on its biofidelity.

This study evaluated a biofidelity of Flex-GT-prototype, relationship to the human one using an FE Flex-GT-prototype model which has high fidelity to the actual one and a FE human model which has high biofidelity. This study result shows a good relationship between the Flex-GT-prototype model and the FE human model, especially under the 50 mm or 75 mm lift upped impact conditions.
Links

URL: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv20/07-0178-O.pdf

Cited Works (9)

Year	Entry
1965	Ryan GA, Mclean AJ. Pedestrian survival. In: Cragun MK, ed. Proceedings of the 9th Stapp Car Crash Conference. October 20-21, 1965; Minneapolis, MN. Warrendale, PA: Society of Automotive Engineers:321-334. SAE 650968.
2006	Kikuchi Y, Takahashi Y, Mori F. Development of a finite element model for a pedestrian pelvis and lower limb. In: Proceedings of the SAE World Congress & Exhibition. April 3-6, 2006; Detroit, MI. Warrendale, PA: Society of Automotive Engineers. SAE 2006-01-0683.
1998	EEVC Working Group 17 Report: Improved Test Methods to Evaluate Pedestrian Protection Afforded by Passenger Cars. European Enhanced Vehicle-Safety Committee (EEVC); 1998.
2003	Konosu A, Tanahashi M. Development of a biofidelic flexible pedestrian legform impactor. Stapp Car Crash J. 2003;47:459-472. SAE 2003-22-0020.
1965	Severy DM. Auto-pedestrian impact experiments. In: Severy DM, ed. Proceedings of the 7th Stapp Car Crash and Field Demonstration Conference. 1963; University of California at Los Angeles. Springfield, IL: Charles C. Thomas; 1965:345-373.
1994	EEVC Working Group 10 Report: Proposals for Methods to Evaluate Pedestrian Protection for Passenger Cars. European Enhanced Vehicle-Safety Committee (EEVC); November 1994.
2003	Mizuno Y. Summary of IHRA pedestrian safety WG activities (2003): proposed test methods to evaluate pedestrian protection afforded by passenger cars. In: Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 19-22, 2003; Nagoya, Japan.
2003	Takahashi Y, Kikuchi Y, Mori F, Konosu A. Advanced FE lower limb model for pedestrians. In: Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 19-22, 2003; Nagoya, Japan.
2007	Issiki T, Konosu A, Tanahashi M. Development of an FE biofidelic flexible pedestrian leg-form impactor (Flex-GT-prototype) model. In: Proceedings of the 20th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 18-21, 2007; Lyon, France.

Cited By (11)

Year	Entry
2009	Miyazaki H, Kitagawa Y, Yasuki T, Kuwahara M, Matsuoka F. Development of flexible pedestrian legform impactor FE model and comparative study with leg behavior of human FE model THUMS. In: Proceedings of the 21st International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 15-18, 2009; Stuttgart, Germany.
2009	Matsui Y, Takagi S, Tanaka Y, Hosokawa N, Itoh F, Nakasato H, Watanabe N, Yonezawa H. Characteristics of the TRL pedestrian legform and the flexible pedestrian legform impactors in car-front impact tests. In: Proceedings of the 21st International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 15-18, 2009; Stuttgart, Germany.
2009	Zander O, Gehring D-U, Leßmann P, Bovenkerk J. Evaluation of a flexible pedestrian legform impactor (Flex-PLI) for the implementation within legislation on pedestrian protection. In: Proceedings of the 21st International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 15-18, 2009; Stuttgart, Germany.
2017	Zander O, Ott J, Wisch M, Fornells A, Fuchs T, Hynd D, Lemmen P, Burleigh M, Lopez-Valdes F, Luera A, Lundgren C. Safety enhanced innovations for older road users (SENIORS): further development of test and assessment procedures towards an improved passive protection of pedestrians and cyclists. In: Proceedings of the 25th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 5-8, 2017; Detroit, MI.
2009	Konosu A, Issiki T, Takahashi Y. Evaluation of the validity of the tibia fracture assessment using the upper tibia acceleration employed in the TRL legform impactor. In: Proceedings of the 2009 International IRCOBI Conference on the Biomechanics of Impact. September 9-11, 2009; York, UK.251-267.
2012	Takahashi Y, Ikeda M, Imaizumi I, Kikuchi Y, Takeishi S. Validation of pedestrian lower limb injury assessment using subsystem impactors. In: Proceedings of the 2012 International IRCOBI Conference on the Biomechanics of Injury. September 12-14, 2012; Dublin, Ireland.304-315.
2013	Takahashi Y, Imaizumi I, Asanuma H, Ikeda M. Responses of the flexible legform impactor in car impacts. In: Proceedings of the 2013 International IRCOBI Conference on the Biomechanics of Injury. September 11-13, 2013; Gothenburg, Sweden.777-788.
2016	Isshiki T, Konosu A, Takahashi Y. Development and evaluation of the advanced pedestrian legform impactor prototype which can be applicable to all types of vehicles regardless of bumper height: finite element model. In: Proceedings of the 2016 International IRCOBI Conference on the Biomechanics of Injury. September 14-16, 2016; Malaga, Spain.770-784.
2016	Takahashi Y, Asanuma H, Imaizumi I. Effectiveness of a test procedure for pedestrian lower limb protection in pedestrians of various sizes. In: Proceedings of the 2016 International IRCOBI Conference on the Biomechanics of Injury. September 14-16, 2016; Malaga, Spain.800-812.
2018	Isshiki T, Antona‐Makoshi J, Konosu A, Takahashi Y. Consolidated technical specifications for the advanced pedestrian legform impactor (aPLI). In: Proceedings of the 2018 International IRCOBI Conference on the Biomechanics of Injury. September 12-14, 2018; Athens, Greece.284-301.
2019	Zander O, Wisch M, Ott J, Burleigh M, Peldschus S, Hynd D. Development and evaluation of an upper body mass (UBM) for the flexible pedestrian legform impactor (FlexPLI) and for incorporation within improved test and assessment procedures: results from SENIORS. In: Proceedings of the 2019 International IRCOBI Conference on the Biomechanics of Injury. September 11-13, 2019; Florence, Italy.397-415.