Perpustakaan Digital ITB

The increase in the number of vehicles, driven by the rising demand for transportation as a means of mobility, affects the high number of motor vehicle accidents. An important component in the impact safety aspect that can improve safety in an accident is the crash box. A crash box is a thin-walled column that absorbs energy from impacts by undergoing plastic deformation, allowing the energy transmitted to passengers to be controlled. The crash box has undergone rapid development, evolving from simple cross-section shapes to complex structures, such as multi-cell, foam-filled, and lattice-filled designs. To attain better specific energy absorption (SEA) performance, the development of the crash box is also accompanied by the advancement of lattice-filled hexagonal column. This research aims to numerically model the crushing of hexagonal crash box filled with modified hexagonal close-packed lattice structure (HCP-M) under quasi static axial loading. Through this research, numerical simulations will be conducted on lattice structure for energy absorption and their implementation in hexagonal crash box structures. An analysis of the addition of lattice structures to the crash box will be carried out to identify the parameters that most significantly impact the performance of the crash box under quasi-static axial loading.