The Effect Of Aluminium Foam Material On The Energy Absorption Capacity Of Different Geometric Structure Crash Boxes

Crash boxes used in automobiles are connecting elements that can transmit the impact energy to the automobile at the minimum level by damping the impact energy that arises in case of a possible accident. Due to this role, crash boxes are an important component on automobiles. In the study, aluminum based metallic foam material was placed in crash boxes with circle, square, pentagonal and hexagonal sections and the changes in energy absorption capacity were invastigated using finite elements analysis. All analyses were performed with Ls-Dyna program. In order to simulate real accident conditions, a mass of 500 kg was hit at a speed of 17.7 m / s to the crash boxes. As a result of the study, it has been found that the aluminum based metallic foam materials placed in the hollow crash boxes have been found to significantly increase the energy absorption capacity