Effect of Cross-Sectional Shape on Energy Absorption in Crash Boxes

Vehicle accidents are a growing concern in today's society. To address this issue, extensive research has been conducted to determine the most effective design for the crash box, a passive safety element. In this study, the performance of cylindrical, square and hexagonal crash boxes has been extensively investigated to determine the optimal choice for a given area. To evaluate the crash boxes, specific energy absorption and crush reaction force were considered as evaluation criteria. Energy absorption of the cylinder design, it provides less energy absorption than the square and hexagonal design. It produces much less peak reaction force than the square and hexagonal crash box. The amount of compression is also much less than square and hexagonal.