Development and review of the IHRA (JARI) and TNO pedestrian models

Neale, M. S.; Hardy, B. J.; Lawrence, G. J. L.

Affiliations

Abstract

This report details a project to review and develop the JARI pedestrian model as chosen by the IHRA to develop their pedestrian head impact test procedure. In the work several modifications were made to the model, including the removal of duplicated contacts defined between the model’s arms and legs, modifications to allow axial stretching in the spine, and the implementation of shoulder joints. To test the biofidelity of the simulated shoulder joints predictions from the original and modified versions of the JARI model, in addition to those from a pedestrian model developed by TNO, were compared against the results from shoulder impact studies completed on PMHS’s. It was found that all the models demonstrated very poor shoulder biofidelity. Furthermore, for the same simulated vehiclepedestrian impacts, differences in the predicted head impact velocities and head impact angles from all the pedestrian models were as high as 3.9 m.s^-1 and 17.1° respectively.

Cited Works (1)

Year	Entry
2000	Bolte JH IV, Hines MH, McFadden JD, Saul RA. Shoulder response characteristics and injury due to lateral glenohumeral joint impacts. Stapp Car Crash J. 2000;44:261-280. SAE 2000-01-SC18.

Cited By (6)

Year	Entry
2005	Neale MS, Hardy BJ, Lawrence GJL. Development and evaluation of a biofidelic shoulder for the IHRA (JARI) pedestrian model. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.
2005	Yao J, Yang J, Otte D, Fredriksson R. Reconstruction of head-to-bonnet top impact in child pedestrian-to-passenger car crash. In: Proceedings of the 2005 International IRCOBI Conference on the Biomechanics of Impact. September 21-23, 2005; Prague, Czech Republic.29-39.
2008	Kerrigan J, Parent D, Untaroiu C, Crandall J, Deng B. A new detailed multi-body model of the pedestrian lower extremity: development and preliminary validation. In: Proceedings of the 2008 International IRCOBI Conference on the Biomechanics of Impact. September 17-19, 2008; Bern, Switzerland.227-242.
2003	Van Hoof J, De Lange R, Wismans JSHM. Improving pedestrian safety using numerical human models. Stapp Car Crash J. 2003;47:401-436. SAE 2003-22-0018.
2009	Kerrigan JR, Parent DP, Untaroiu C, Crandall JR, Deng B. A new approach to multibody model development: pedestrian lower extremity. Traffic Inj Prev. 2009;10(4):386-397.
2008	Kerrigan JR. A Computationally Efficient Mathematical Model of the Pedestrian Lower Extremity [PhD thesis]. Charlottesville, VA: University of Virginia; January 2008.