Selection of Crashbox and Preliminary Design of Crash Zone Area of Metro Kapsul

• Main Author: Khoirur Rijal - Nim: 13114017 , Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29281
• Institution: Institut Teknologi Bandung

<p align="justify">Indonesia had a heavy train accident in 1987. It was KA225 and KA220 which crashed into each other and caused at least 300 passangers were killed and 156 was injuried. To minimize the number of casualties in the future, it is necessary to study the vehicle crashworthiness so that the deceleration experienced by passengers is not too large because it can cause passengers to be thrown and cause injury or death. The deceleration is directly proportional to the vehicle ability to absorb the kinetic energy of a collision. A device that absorbs the collision kinetic energy is a crashbox. Applies also for Metro Kapsul, a crashbox is needed to reduce the risk of passenger safety when a collision occurs. Based on that background, this final project is aimed to determine the basic design of Metro Kapsul crash zone area, to determine the design of impact absorber structure, and to obtain crashworthiness characteristics of impact absorber structure that are peak force, mean crushing force, energy absorbed, energy specific, mean deceleration. This final project was conducted by numerical simulation using Ansys Mechanical APDL 17.1 as the solver. The Cowper-Symonds was used as the constitutive material model for the material of Aluminum 6063-T6 impact absorber structure. After that, the result of numerical simulation verified with teoritical calculation. With the limitation of the research that the material of the impact absorber structure should be available in the market and the mean crushing force should not be far higher than the static compression load test of the base frame, the author had successfully designed an impact absorber structure that is consisted of six 76.2 x 1.95 mm square tube that was made by PT. Alexindo. The impact absorber structure has 208 kN of mean crushing force and 2,3 g of mean decerelation. <p align="justify">