Technical Paper
Analysis of Different Countermeasures in Response to FMVSS 201 Upper Interior Head Impact Protection and A Comparison Study on the Injury Parameters and Energy Absorption
2001-10-16
2001-01-3058
In response to Federal Motor Vehicle Safety Standards (FMVSS) 201 upper interior head impact protection, development of a suitable countermeasure has become an important aspect. FMVSS 201 safety regulation stipulates that the Head Injury Criterion, HIC (d) should be less than 1000 when a FMH is impacted at a speed of 15 mph. The interior components of a vehicle generally do not generate high HIC (d) numbers by themselves but the steel structures behind them to which they are attached do so. The gap between the interior component and the steel structure makes a provision for the introduction of some countermeasures which can absorb the kinetic energy of the FMH in the form of internal energy so that the acceleration response of the FMH does not generate high HIC (d) and Peak G force. This paper discusses the analysis of different countermeasures using a dynamic finite element tool LS-DYNA for automotive interior components to comply with FMVSS 201 requirements.