Investigation on pedestrian pelvis loading mechanisms using finite element simulations

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Takahashi, Yukou¹; Suzuki, Shunji¹; Ikeda, Miwako¹; Gunji, Yasuaki¹

Investigation on pedestrian pelvis loading mechanisms using finite element simulations

Proceedings of the 2010 International IRCOBI Conference on the Biomechanics of Impact

Affiliations

¹Honda R&D Co., Ltd. Automobile R&D Center
Abstract and keywords

The objective of this study was to investigate mechanisms of pedestrian pelvis loading due to impact from various vehicle front ends using finite element (FE) human and vehicle models. Three types of vehicles were chosen to represent different loading patterns to the pelvis of a pedestrian. Full-scale car-pedestrian impact simulations using these vehicle models were performed with different pedestrian conditions to identify major factors of pelvis loading for different loading patterns. In addition, FE simulations using an isolated pelvis model were run to clarify factors of determining pelvis internal load distributions when subjected to different loading patterns. The results suggested that inertial contributions from the upper body and the contralateral lower limb need to be accurately incorporated when evaluating pelvis injuries in pedestrians struck by various types of vehicles.

Keywords: pedestrians; pelvis; mechanics; human body; finite element method

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Cited By (17)

Year	Entry
2011	Suzuki S, Takahashi Y, Okamoto M, Fredriksson R, Oda S. Validation of pedestrian sedan buck using human finite element model. In: Proceedings of the 22nd International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 13-16, 2011; Washington, DC.
2017	Asanuma H, Yanaoka T, Takahashi Y. Response corridors to evaluate the biofidelity of the lower limbs of pedestrian dummies. In: Proceedings of the 25th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 5-8, 2017; Detroit, MI.
2011	Takahashi Y, Suzuki S, Okamoto M, Oda S, Fredriksson R, Pipkorn B. Effect of stiffness characteristics of vehicle front‐end structures on pedestrian pelvis and lower limb injury measures. In: Proceedings of the 2011 International IRCOBI Conference on the Biomechanics of Injury. September 14-16, 2011; Krakow, Poland.265-276.
2012	Pipkorn B, Fredriksson R, Oda S, Takahashi Y, Suzuki S, Ericsson M. Development and validation of a generic universal vehicle front buck and a demonstration of its use to evaluate a hood leading edge bag for pedestrian protection. In: Proceedings of the 2012 International IRCOBI Conference on the Biomechanics of Injury. September 12-14, 2012; Dublin, Ireland.168-181.
2012	Ikeda M, Suzuki S, Takahashi Y, Oda S, Fredriksson R, Pipkorn B. Effect of pedestrian buck contact area and force-deflection property on pedestrian pelvis and lower limb injuries. In: Proceedings of the 2012 International IRCOBI Conference on the Biomechanics of Injury. September 12-14, 2012; Dublin, Ireland.182-193.
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.
2012	Gunji Y, Okamoto M, Takahashi Y. Examination of human body mass influence on pedestrian pelvis injury prediction using a human FE model. In: Proceedings of the 2012 International IRCOBI Conference on the Biomechanics of Injury. September 12-14, 2012; Dublin, Ireland.316-327.
2014	Yanaoka T, Akiyama A, Takahashi Y. Investigation of fatality probability function associated with injury severity and age. In: Proceedings of the 2014 International IRCOBI Conference on the Biomechanics of Injury. September 10-12, 2014; Berlin, Germany.29-40.
2014	Pipkorn B, Forsberg C, Takahashi Y, Ikeda M, Fredriksson R, Svensson C, Thesleff A. Development and component validation of a generic vehicle front buck for pedestrian impact evaluation. In: Proceedings of the 2014 International IRCOBI Conference on the Biomechanics of Injury. September 10-12, 2014; Berlin, Germany.718-729.
2014	Takahashi Y, Ikeda M, Asanuma H, Svensson C, Pipkorn B, Forsberg C, Fredriksson R. Full‐scale validation of a generic buck for pedestrian impact simulation. In: Proceedings of the 2014 International IRCOBI Conference on the Biomechanics of Injury. September 10-12, 2014; Berlin, Germany.730-745.
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.
2015	Takahashi Y, Asanuma H, Yanaoka T. Development of a full‐body human FE model for pedestrian crash reconstructions. In: Proceedings of the 2015 International IRCOBI Conference on the Biomechanics of Injury. September 9-11, 2015; Lyon, France.530-545.
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	Isshiki T, Higuchi Y-k, Kato R, Antona-Makoshi J, Konosu A, Takahashi Y. Development of a pedestrian pelvis impactor CAE model with potential to address pelvis injury loads and injury mechanisms. In: Proceedings of the 2019 International IRCOBI Conference on the Biomechanics of Injury. September 11-13, 2019; Florence, Italy.506-523.
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.
2022	Khakpour S. Multi-Component Finite Element Analysis of Low- Energy Acetabular Fracture: Computational Study of Pelvic Girdle Fracture Mechanism [PhD thesis]. University of Oulu; 2022.