ANALISIS SIMULASI KERUSAKAN CRASHBOX PADA CHASSIS LADDER FRAME MOBIL HEMAT ENERGI POLIBAN

Abstract

The crashbox is a crucial component in a vehicle’s passive safety system, playing a key role in absorbing kinetic energy during a collision. This research analyzes the failure of a crashbox integrated with a ladder frame chassis in a energy-efficient vehicle. Three crashbox designs (straight, double, curved) were evaluated using autodesk inventor software under static loads of 25kg and 55kg to measure the distribution of von mises stress. The simulation results show that the straight design generated a maximum stress of 1.819 Mpa under a 25kg load and 4.402 Mpa under a 55kg load. The double design recorded a maximum stress of 1.263 Mpa under a 25kg load and 2.780 Mpa under a 55kg load. The curved design demonstrated the best performance, with a maximum stress of 0.5093 Mpa under a 25kg load and 1.120 Mpa under a 55kg load. The curved crashbox design was able to distribute stress more evenly, reducing the risk of plastic deformation and enhancing structural reliability. Therefore, the curved crashbox design is considered the most optimal for energy-efficient vehicles due to its ability to minimize maximum stress and improve passenger safety by reducing the risk of structural failure