TY - JOUR PY - 2002// TI - The effect of the FMVSS201u free motion headform legislation on head injuries: a discussion based on numerical simulations JO - Proceedings of the International Research Council on the Biomechanics of Injury conference A1 - Eichberger, A. A1 - Steiner, J. A1 - Breitenhuber, W. A1 - Wernig, Johannes SP - EP - VL - 30 IS - N2 - Until 2002 the complete car fleet to be sold on the US market has to fulfill FMVSS201u (Free Motion Headform) legislation (DOT, 2000). It includes a test procedure using a free flying headform (FMH) that impacts several specified points on the upper car interior with a speed up to 24kph. Injury criterion is HIC(d), a modified HIC with a tolerance limit of 1000. The purpose of this paper is to give an idea if this legislation has potential to reduce head injuries, based on Finite-Element calculations. Results of this study suggest that FMVSS 201u should be updated in order to more precisely evaluate the risk for head/brain injury. We propose either to replace the test object by a spherical headform that has only one degree of freedom in the impacting direction or - in case of keeping the 201u test setup - to modify the injury criterion by a combination of HIC and rotational tolerance criteria. We are planning to extent this study with hardware testing. LA - SN - 2235-3151 UR - http://dx.doi.org/ ID - ref1 ER -