#TITLE_ALTERNATIVE#

• Main Author: ARDIANSYAH PULUNGAN (NIM: 136 05 061); Tim Pembimbing: Dr. Tatacipta Dirgantara;Dr. Leonardo G, DITHO
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15419
• Institution: Institut Teknologi Bandung

Research theme about car bumping system is increasing lately. Car attached bumping system is to protect the passenger compartment during frontal and offset collision. This bumper system will absorb the collision energy through the collapse behavior called progressive buckling. With the deformation process, it can lessen damage at passenger compartment and minimize the injury possibility of the passenger and gives deceleration residing in at safe level to the passenger body. <br /> <br /> <br /> <br /> <br /> In this research, cylindrical thin-walled column subjected to axial impact loading is studied. It is analogous as a crushing box, which is one of many bumping energy absorber component in a car, under a frontal crash. This final project will focus on the effect of the initial impact velocity with respect to mean crushing force and mode of deformation. An explicit non-linear finite element code LSDYNA was used to predict the responses of cylindrical thin walled columns subjected to low velocity axial impact loading. <br /> <br /> <br /> <br /> <br /> The increasing of the mean crushing forces due to the strain rate hardening is approximately 5-10% and 9-12%, for the numerical and experimental result respectively, if the impact velocity increased from 6 to 12 m/s.