Repeatability and sensitivity to seat-position of THOR-NT and Hybrid III based on Hyge sled tests

Masuda, Mitsutoshi; Yaguchi, Masayuki; Ono, Koshiro

In this study, THOR-NT and Hybrid III responses were compared in ten HYGE sled test configurations using a JNCAP pulse representing a full overlap 55 km/h impact against a rigid wall..

Based on the results, repeatability of each dummy and differences in response sensitivity between 2 seating procedures (FMVSS208 and UMTRI) were evaluated.

In general, both dummies showed a reasonable level of comparable results and repeatability.

However, the kinematics and dynamic responses of their lower extremities were different depending on the seating position. It is supposed that those differences were caused by the initial gap between the foot and the footrest and between the knee and the knee bolster, their different lower leg axial stiffness and differences of their femur and tibia anthropometry.

This result indicated that a new positioning procedure should be developed and defined for the THOR dummy.

Keywords: dummies; Hybrid III; repeatability; sled tests; sensitivity; analysis

Year

Entry

2001

Haffner M, Eppinger R, Rangarajan N, Shams T, Artis M, Beach D. Foundations and elements of the NHTSA Thor ALPHA ATD design. In: Proceedings of the 17th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 4-7, 2001; Amsterdam, The Netherlands.

1992

Schneider LW, Ricci LL, Salloum MJ, Beebe MS, King AI, Rouhana SW, Neathery RF. Design and Development of an Advanced ATD Thorax System for Frontal Crash Environments: Volume 1: Primary Concept Development. Ann Arbor, MI: University of Michigan Traffic Research Institute (UMTRI); June 1992. UMTRI Publication UMTRI-92-22-1.

2001

Ito M, Goto T, Ono K, Matsuoka F, Haffner M. Dynamic response analysis of the Thor-Lx dummy lower extremity. In: Proceedings of the 17th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 4-7, 2001; Amsterdam, The Netherlands.

2005

Shams T, Rangarajan N, McDonald J, Wang Y, Platten G, Spade C, Pope P, Haffner M. Development of THOR NT: enhancement of THOR Alpha-the NHTSA advanced frontal dummy. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.