4/23/2024 0 Comments Seat belt sign trauma pptWhen the AEB was activated, the risks of concussion and rib fractures were reduced upper neck tension forces, pelvis Anterior Superior Iliac Spine (ASIS) forces, and lower extremity forces were also reduced. The risks were reduced when the AEB was activated, particularly for the 45-year-old occupant. When neither system was activated, the predicted risk for an occupant to sustain two or more fractured ribs (NFR2+) was 100% for both 45- and 65-year-old male occupants. The impact speed of 80 km/h was reduced to 69 km/h by AEB. The effects of AEB and PPT were evaluated by simulating a 1 g pre-crash braking scenario for 0.5 s, with and without AEB, for three different PPT force levels: 0, 300, and 600 N. The vehicle interior model comprised a seat, an instrument panel, a three-point pretensioned seatbelt system with a load-limiter of 3.1 kN force level, and a frontal passenger airbag. The crash pulses used were from separate full-frontal crash simulations using a Honda Accord FE model. The SAFER Active average male Human Body Model was used as an occupant substitute. Automated Emergency Braking (AEB) and seatbelt pre-pretensioning (PPT) are means to improve occupant protection the purpose of this study was to quantify their effects on occupant injury risks in high-severity full-frontal crashes by Finite Element (FE) simulations. In high-severity crashes, occupant protection is challenging. 2Division of Vehicle Safety, Department of Mechanics and Maritime Sciences, Chalmers University of Technology, Gothenburg, Sweden.Ekant Mishra 1* Krystoffer Mroz 1 Bengt Pipkorn 1,2 Nils Lubbe 1,2
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