Influence of vehicle shape and stiffness on the pedestrian lower extremity injuries: review of current pedestrian lower leg test procedure

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Martínez, Luis¹; Compigne, Sabine²; Guerra, Luis J.¹

Influence of vehicle shape and stiffness on the pedestrian lower extremity injuries: review of current pedestrian lower leg test procedure

Proceedings of the 2008 International IRCOBI Conference on the Biomechanics of Impact

Affiliations

¹INSIA. Universidad Politécnica de Madrid. UPM.

²TOYOTA Motor Europe
Abstract and keywords

This study aims at evaluating the current pedestrian lower leg test procedure with respect to the human response in a pedestrian accident. The test procedure is examined for a variety of representative cars of the European fleet. The investigation is purely based on numerical simulations carried out using the regulatory lower leg impactor, as described in the Directive 2004/90/EC, and compared to simulations where the impactor is replaced by the human FE model THUMS (Total HUman Model for Safety). THUMS was developed in collaboration by Toyota Motor Corporation and Toyota Central R&D Labs.. It has been extensively validated under pedestrian impact conditions and its response has been proven to be biofidelic. Therefore, THUMS results are considered as reference for the analysis of the lower leg impactor simulation results.

THUMS and impactor responses are compared looking at: , their kinematics, accelerations, velocities and deflections, , their injury prediction, , And finally, their contact forces with the vehicle structures. This work was carried out in the frame of the sub-project Nº3 on "pedestrians and cyclist accidents" of the European funded project "Advanced PROtection SYStem", APROSYS.

Keywords: Pedestrians; Impactors; Regulations; Human Body FEM; THUMS

Cited Works (16)

Year	Entry
1970	Yamada H. Strength of Biological Materials. Evans FG, ed. Baltimore, MD: Williams & Wilkins Company; 1970.
1995	Ramet M, Bouquet R, Bermond F, Caire Y, Bouallegue M. Shearing and bending human knee joint tests in quasi-static lateral load. In: Proceedings of the 1995 International IRCOBI Conference on the Biomechanics of Impact. September 13-15, 1995; Brunnen, Switzerland.93-105.
2001	Takahashi Y, Kikuchi Y. Biofidelity of test devices and validity of injury criteria for evaluating knee injuries to pedestrians. In: Proceedings of the 17th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 4-7, 2001; Amsterdam, The Netherlands.
2002	Iwamoto M, Kisanuki Y, Watanabe I, Furusu K, Miki K, Hasegawa J. Development of a finite element model of the total human model for safety (THUMS) and application to injury reconstruction. In: Proceedings of the 2002 International IRCOBI Conference on the Biomechanics of Impact. September 18-20, 2002; Munich, Germany.
1998	EEVC Working Group 17 Report: Improved Test Methods to Evaluate Pedestrian Protection Afforded by Passenger Cars. European Enhanced Vehicle-Safety Committee (EEVC); 1998.
2005	Yasuki T. A survey on the biofidelity of the knee bending angle of the TRL lower leg impactor. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.
1994	EEVC Working Group 10 Report: Proposals for Methods to Evaluate Pedestrian Protection for Passenger Cars. European Enhanced Vehicle-Safety Committee (EEVC); November 1994.
1999	Kajzer J, Matsui Y, Ishikawa H, Schroeder G, Bosch U. Shearing and bending effects at the knee joint at low speed lateral loading. In: Proceedings of the SAE International Congress & Exposition. March 1-4, 1999; Detroit, MI. Warrendale, PA: Society of Automotive Engineers. SAE 1999-01-0712.
2001	Maeno T, Hasegawa J. Development of a finite element model of the total human model for safety (THUMS) and application to car-pedestrian impacts. In: Proceedings of the 17th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 4-7, 2001; Amsterdam, The Netherlands.
1996	Crandall JR, Portier L, Petit P, Hall GW, Bass CR, Klopp GS, Hurwitz S, Pilkey WD, Trosseille X, Tarrière C, Lassau J-P. Biomechanical response and physical properties of the leg, foot, and ankle. In: Proceedings of the 40th Stapp Car Crash Conference. November 4-6, 1996; Albuquerque, NM. Warrendale, PA: Society of Automotive Engineers:173-192. SAE 962424.
2007	Martinez L, Guerra LJ, Ferichola G, Garcia A, Yang J. Stiffness corridors of the European fleet for pedestrian simulations. In: Proceedings of the 20th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 18-21, 2007; Lyon, France.
2002	Oshita F, Omori K, Nakahira Y, Miki K. Development of a finite element model of the human body. In: 7th International LS-DYNA Users Conference. May 19-21, 2002; Detroit, MI.3-37–3-48.
1993	Ishikawa H, Kajzer J, Schroeder G. Computer simulation of impact response of the human body in car-pedestrian accidents. In: Proceedings of the 37th Stapp Car Crash Conference. November 7-8, 1993; San Antonio, TX. Warrendale, PA: Society of Automotive Engineers:235-248. SAE 933129.
1997	Kajzer J, Schroeder G, Ishikawa H, Matsui Y, Bosch U. Shearing and bending effects at the knee joint at high speed lateral loading. In: Proceedings of the 41st Stapp Car Crash Conference. November 13-14, 1997; Lake Buena Vista, FL. Warrendale, PA: Society of Automotive Engineers:151-165. SAE 973326.
1993	Kajzer J, Cavallero C, Bonnoit J, Morjane A, Ghanouchi S. Response of the knee joint in lateral impact: effect of bending moment. In: Proceedings of the 1993 International IRCOBI Conference on the Biomechanics of Impact. September 8-10, 1993; Eindhoven, The Netherlands.105-116.
2007	Martínez L, Guerra LJ, Ferichola G, García A. Pedestrian accident simulations methodology using detailed vehicle models and age-dependent leg fracture limits on the pedestrian. In: Proceedings of the 2007 International IRCOBI Conference on the Biomechanics of Impact. September 19-21, 2007; Maastricht, The Netherlands.363-366.