NUMERICAL AND EXPERIMENTAL STUDY OF HEXAGON CRASHBOX WITH HEXAGON-REENTRANT LATTICE FILLER PRODUCED BY ADDITIVE MANUFACTURING

• Main Author: Falyanzhuri Irzanto, Mirshaan
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/84401
• Institution: Institut Teknologi Bandung

The growth of automotive industry not only increase its usage, but also the risk of accident and injury experienced by its users. One of the attempt to reduce risk of injury during accident is by introducing a crashbox as energy absorption device. However the energy absorption capacity of crashbox is limited by design restriction, especially in terms of dimension and total permitted mass, depending on the available placement space in the vehicle compartment. Innovation that can be done to improve the performance of crashbox is by adding lattice structures as fillers. Moreover, currently the studies of lattice structure are developing due to the availability of additive manufacturing technology that allows the production of complex lattice geometries at a relatively lower cost and quicker process. In this study, numerical simulations and experiments will be conducted on the usage of lattice as a crashbox reinforcement structure under quasi-static axial loading. The lattice structure to be used is a combination of hexagon and reentrant, and is produced by additive manufacturing using UV-sensitive photopolymer resin materials. Furthermore, validation will be carried out between numerical simulations and experimental models and the studies of lattice thickness variations.