Advanced FE lower limb model for pedestrians

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Takahashi, Yukou¹; Kikuchi, Yuji¹; Mori, Fumie²; Konosu, Atsuhiro³

Advanced FE lower limb model for pedestrians

Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV)

Affiliations

¹Honda R&D Co., Ltd.

²PSG Co., Ltd.

³Japan Automobile Research Institute, Japan
Abstract

The goal of this study was to develop a finite element (FE) lower limb model that can be used for direct and accurate injury prediction. Threedimensional geometry of the lower limb bones and knee ligaments was determined from MRI scans of a human volunteer for an accurate geometry reconstruction. In order to address various loading conditions in car-pedestrian accidents, the dynamic response of the bone models was validated against the dynamic 3-point bending tests with different loading points conducted in a recent study. Material parameters for knee ligaments were determined from the latest tensile tests performed at high loading rates that may be generated in real accidents. In order to validate the dynamic response of the knee joint alone, a recently performed experiment using only the knee portion of the human subject was used. The results of these model validations showed that the model developed in this study was capable of accurately predicting the dynamic response of the lower limb bones in various loading conditions, and the dynamic shearing and bending response of the knee joint alone. It was also found that bone fracture in the 3-point bending tests and damage to knee ligaments in the shearing and bending tests can be reproduced using this model.
Links

URL: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv18/CD/Files/18ESV-000218.pdf

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Cited By (26)

Year	Entry
2015	Yang KH, Chou CC. Mathematical models, computer aided design, and occupant safety. In: Yoganandan N, Nahum AM, Melvin JW, eds. Accidental Injury: Biomechanics and Prevention. 3rd ed. New York: Springer; 2015:143-182.
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2014	Isshiki T, Konosu A, Takahashi Y. Development of an appropriate pedestrian legform impact test method which can be used for all types of vehicles including high bumper vehicles: development of a simplified upper body part (SUBP) FE model. In: Proceedings of the 2014 International IRCOBI Conference on the Biomechanics of Injury. September 10-12, 2014; Berlin, Germany.759-784.
2015	Isshiki T, Konosu A, Takahashi Y. Analysis of the causes of differences in impact responses between a human lower limb and the flexible pedestrian legform impactor under low and high bumper vehicle impact situations. In: Proceedings of the 2015 International IRCOBI Conference on the Biomechanics of Injury. September 9-11, 2015; Lyon, France.401-413.
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.
2020	Konosu A, Isshiki T, Antona-Makoshi J, Higuchi Y-k, Winter D, Takahashi Y. Biofidelity improvement of advanced pedestrian legform impactor in rebound phase. In: Proceedings of the 2020 International IRCOBI Conference on the Biomechanics of Injury. 2020; Munich, Germany.624-646.
2004	Bose D, Bhalla K, Rooij L, Millington S, Studley A, Crandall J. Response of the knee joint to the pedestrian impact loading environment. In: Proceedings of the SAE World Congress & Exhibition. March 8-11, 2004; Detroit, MI. Warrendale, PA: Society of Automotive Engineers. SAE 2004-01-1608.
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2004	Kerrigan JR, Drinkwater DC, Kam CY, Murphy DB, Ivarsson BJ, Crandall JR, Patrie J. Tolerance of the human leg and thigh in dynamic latero-medial bending. Int J Crashworthiness. 2004;9(6):607-623.
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2005	Untaroiu CD. Development and Validation of a Finite Element Model of Human Lower Limb: Including Detailed Geometry, Physical Material Properties, and Component Validations for Pedestrian Injuries [PhD thesis]. Charlottesville, VA: University of Virginia; May 2005.
2008	Kerrigan JR. A Computationally Efficient Mathematical Model of the Pedestrian Lower Extremity [PhD thesis]. Charlottesville, VA: University of Virginia; January 2008.