Browse Publications Technical Papers 2009-01-1214
2009-04-20

Pedestrian Dummy Pelvis Impact Responses 2009-01-1214

In order to investigate pedestrian injury mechanism by representing whole body kinematics of a pedestrian, a pedestrian dummy (POLAR II) has been developed. Previous studies indicated that the original pelvis design needed to be modified from the comparison of POLAR II and PMHS (Post Mortem Human Subject) responses in a pedestrian impact test with a SUV (Sports Utility Vehicle). In addition, according to the results of an in-depth investigation of pedestrian versus SUV or mini-van accidents in the US, pelvis fracture was found to be most frequent in AIS 2+ pelvis and lower limb injuries. Based on these findings, the POLAR II pelvis was modified for improved biofidelity. The modified pelvis design incorporated the flexible ilium (polyacetal resin) and pubic symphysis (rubber material) as opposed to the original pelvis cast in aluminum. The modified pelvis responses were verified against published isolated pelvic PMHS test results in lateral compression of the pelvis. The results showed that the force-deflection responses had good correlation with the published response data for both iliac and acetabulum loading.

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