Akademik Veri Yönetim Sistemi
9. INTERNATIONAL MEDITERRANEAN SCIENTIFIC RESEARCH AND INNOVATION CONGRESS, Antalya, Türkiye, 13 Aralık 2025, ss.289-298, (Tam Metin Bildiri)
In the automotive industry, pedestrian safety is increasingly being considered as an essential component of passive safety strategies in vehicle design. Since head injuries occurring during pedestrian collisions can lead to fatal consequences, the head impact behavior of hood systems has become highly significant. This study aims to determine and evaluate HIC (Head Injury Criterion) values through a pedestrian head impact analysis conducted at a specific point on a vehicle hood. The analyses were performed using an explicit dynamic solution method with the LS-DYNA solver on a finite element model of the hood, created in BETA CAE ANSA software to cover the head impact region. The pedestrian head impact scenario was modeled based on the Euro NCAP Pedestrian Protection Test Protocol. In this context, an adult headform with a mass of 4.5 kg and a diameter of 165 mm was modeled and impacted onto the hood surface at a velocity of 11.1 m/s (40 km/h). During the simulation, the deformation behavior of the hood surface, the acceleration response of the headform, and its rebound motion after impact were examined. The simulation results were evaluated in the BETA CAE META environment. Using the acceleration–time data obtained from the headform’s center of gravity, the HIC (Head Injury Criterion) value was calculated. The obtained HIC value was compared with the Euro NCAP limit values, and the injury potential at the impact location was assessed. This study demonstrates that finite element analysis can be effectively utilized to evaluate pedestrian head injury risk by focusing on a single-point head impact scenario on vehicle hood systems. The findings quantitatively reveal the influence of hood geometry on pedestrian safety performance and provide an engineering-based assessment that can guide future design improvements